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Problem on USB1 of am3359: ti81xx_interrupt 1146: VBUS error workaround (delay coming)

Other Parts Discussed in Thread: AM3359, TPS65910, TPS65217, TPS2051

Hi,

I'm working on customized am3359 board, which has same usb part schematic as beaglebone black A5C, I use uboot psp 06.00.00.00 and linux psp 04.06.00.11, after login root,  console outputs "ti81xx_interrupt 1146: VBUS error workaround (delay coming)" periodically and usb function can not work.

I've try some methods as:

in uboot prompt, execute "usb start", it says, "lowlevel init failed"

modify hardware, add cap on VBUS to 200uF, directly connect 5V system power to VBUS, all failed to solve it.

I checked VBUS, it's stable on 5V, seems software issues, but I can't find where to modify something, could anybody advise?

Thanks a lot!

  • Can you check if you haven't pinmuxed USB_DRVVBUS to GPIO by accident? Can you post the USB part of your schematic? This error is caused by USB_VBUS pin being below minimum allowed voltage at session start.
  • I used original source code from TI web site, and did not modify any part of USB, only removed codes and configurations related to I2C0 to eeprom, I'm sure I did not  change USB_DRVVBUS setting from original codes.

    Additional info for your reference, I use old silicon version am3359 (sil_rev=0), is it possible reason?

  • Yonghui,

    Could you please do a test?

    Please move cap C21 to the place close to the usb port, for example, some where near C20, also increase C21 to 150uF, and let us if the issue still happens.

  • Hi, Liu Bin,

    I've removed U2 and connect U2 pin 2 to pin 8, used parallel two 100uF caps on C21 place(should about 200uF totally), and the actually distance between C22 to C21 is about 3~5mm. (to avoid any mistake, I've removed U3 too).

    This is my current situation, problem still happens, is there any suggestion for more testing? 

  • Yonghui,

    All your hw mod looks fine. That is equivalent to what I asked. But I cannot think of anything could cause the error. Following are some pointers I'd like you to try out. Maybe it will give us a clue.

    I think I miss one piece info that you mentioned in your first post that the error message showed up right after login into serial console, so there is no usb device plugged in the USB1 port, right? and it does not happen before login?

    How have you measured VBUS? using scope? Can you please use scope to measure both VBUS and DRVVBUS at the same time and provide the screenshot?

    Please also provide the log of command 'cat /proc/driver/musb_hdrc.1'. Please run it multiple times while the error message is flooding, I would like to see if there is MUSB register value change.

    The last thing I want to check is your software change, unlikely, but there could be something wrong which causes the usb module to be initialized improperly. So could you please provide the exact link from ti.com where you downloaded the kernel source code? and the file(s) you modified?

  • Hi Liu Bin,

    Thank you for your guidance, I made below testing:

    ---------------------------

    I think I miss one piece info that you mentioned in your first post that the error message showed up right after login into serial console, so there is no usb device plugged in the USB1 port, right? and it does not happen before login?

    ++++++++++++++++

    I did not use usb hub all the time, I've tried reboot(after login) and reset(in uboot) when usb-stick plugged in and not plugged in, both appear warning message and usb can not work. Before login, there are also same VBUS warning message as after login, I think they appear at the same frequency.

    ---------------------------

    How have you measured VBUS? using scope? Can you please use scope to measure both VBUS and DRVVBUS at the same time and provide the screenshot?

    ++++++++++++++++

    Yes, now I connect VBUS directly to system 5V, I use Tektronix TDS2024G to get below screenshot.


    ---------------------------

    Please also provide the log of command 'cat /proc/driver/musb_hdrc.1'. Please run it multiple times while the error message is flooding, I would like to see if there is MUSB register value change.

    ++++++++++++++++

    root@am335x-evm:~# cat /proc/driver/musb_hdrc.1
    Status: MHDRC, Mode=Host (Power=f0, DevCtl=90)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# [ 101.356048] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    root@am335x-evm:~# cat /proc/driver/musb_hdrc.1
    Status: MHDRC, Mode=Host (Power=f0, DevCtl=90)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# cat /proc/driver/musb_hdrc.1
    Status: MHDRC, Mode=Host (Power=f0, DevCtl=90)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# cat /proc/driver/musb_hdrc.1[ 103.500854] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    Status: MHDRC, Mode=Host (Power=f0, DevCtl=90)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# cat /proc/driver/musb_hdrc.1
    Status: MHDRC, Mode=Host (Power=f0, DevCtl=90)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# [ 105.645660] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    ------------------------

    The last thing I want to check is your software change, unlikely, but there could be something wrong which causes the usb module to be initialized improperly. So could you please provide the exact link from ti.com where you downloaded the kernel source code? and the file(s) you modified?

    ++++++++++++++

    I download sdk source code and tools chain from: http://www.ti.com/tool/linuxezsdk-sitara and select "linuxezsdk-am335x".  

    I've modified uboot/board/ti/am335x/board.c, uboot/board/ti/am335x/mux.c, linux/arch/arm/mach-omap2/board-am335xevm.c, all related to eeprom and clk/opp/voltage setting.

  • Additionally, I found some kernel build warning related to usb:

    Is it risky?

    I also attached some boot log for your reference.

    U-Boot 2013.01.01 (Oct 31 2013 - 10:39:07)

    I2C: ready
    DRAM: 128 MiB
    WARNING: Caches not enabled
    NAND: 256 MiB
    MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
    musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    musb-hdrc: MHDRC RTL version 2.0
    musb-hdrc: setup fifo_mode 4
    musb-hdrc: 28/31 max ep, 16384/16384 memory
    USB Peripheral mode controller at 47401000 using PIO, IRQ 0
    musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    musb-hdrc: MHDRC RTL version 2.0
    musb-hdrc: setup fifo_mode 4
    musb-hdrc: 28/31 max ep, 16384/16384 memory
    USB Host mode controller at 47401800 using PIO, IRQ 0
    Net: cpsw, usb_ether
    Hit any key to stop autoboot: 0
    mmc0 is current device
    SD/MMC found on device 0
    reading uEnv.txt
    ** Unable to read file uEnv.txt **
    reading uImage
    3189112 bytes read in 511 ms (6 MiB/s)
    Booting from mmc ...
    ## Booting kernel from Legacy Image at 80007fc0 ...
    Image Name: Linux-3.2.0
    Image Type: ARM Linux Kernel Image (uncompressed)
    Data Size: 3189048 Bytes = 3 MiB
    Load Address: 80008000
    Entry Point: 80008000
    Verifying Checksum ... OK
    XIP Kernel Image ... OK
    OK

    Starting kernel ...

    Uncompressing Linux... done, booting the kernel.
    [ 0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #1 Thu Oct 31 11:05:20 CST 2013
    [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [ 0.000000] Machine: am335xevm
    [ 0.000000] Memory policy: ECC disabled, Data cache writeback
    [ 0.000000] AM335X ES1.0 (sgx neon )
    [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
    [ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [ 0.000000] Memory: 128MB = 128MB total
    [ 0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [ 0.000000] Virtual kernel memory layout:
    [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
    [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
    [ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
    [ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
    [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
    [ 0.000000] .text : 0xc0008000 - 0xc0596000 (5688 kB)
    [ 0.000000] .init : 0xc0596000 - 0xc05d1000 ( 236 kB)
    [ 0.000000] .data : 0xc05d2000 - 0xc063aeb0 ( 420 kB)
    [ 0.000000] .bss : 0xc063aed4 - 0xc0669c24 ( 188 kB)
    [ 0.000000] NR_IRQS:396
    [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [ 0.000000] Total of 128 interrupts on 1 active controller
    [ 0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [ 0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [ 0.000000] Console: colour dummy device 80x30
    [ 0.000305] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [ 0.067657] pid_max: default: 32768 minimum: 301
    [ 0.067932] Security Framework initialized
    [ 0.068084] Mount-cache hash table entries: 512
    [ 0.068725] CPU: Testing write buffer coherency: ok
    [ 0.094299] omap_hwmod: pruss: failed to hardreset
    [ 0.096252] print_constraints: dummy:
    [ 0.096923] NET: Registered protocol family 16
    [ 0.101287] OMAP GPIO hardware version 0.1
    [ 0.106964] omap_mux_init: Add partition: #1: core, flags: 0
    [ 0.111053] omap_i2c.1: alias fck already exists
    [ 0.112823] omap2_mcspi.1: alias fck already exists
    [ 0.113311] omap2_mcspi.2: alias fck already exists
    [ 0.115356] edma.0: alias fck already exists
    [ 0.115386] edma.0: alias fck already exists
    [ 0.115447] edma.0: alias fck already exists
    [ 0.176940] bio: create slab <bio-0> at 0
    [ 0.181610] SCSI subsystem initialized
    [ 0.184936] usbcore: registered new interface driver usbfs
    [ 0.185577] usbcore: registered new interface driver hub
    [ 0.185974] usbcore: registered new device driver usb
    [ 0.186553] registerd cppi-dma Intr @ IRQ 17
    [ 0.186584] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [ 0.186584] Cppi41 Init Done
    [ 0.186645] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [ 0.187225] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [ 0.189727] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [ 0.192687] tps65910 1-002d: could not be detected
    [ 0.195556] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [ 0.197875] Switching to clocksource gp timer
    [ 0.233154] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [ 0.233459] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [ 0.234069] MUSB0 controller's USBSS revision = 4ea20800
    [ 0.236053] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [ 0.236358] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [ 0.236968] MUSB1 controller's USBSS revision = 4ea20800
    [ 0.237915] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [ 0.238159] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [ 0.238372] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [ 0.238403] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [ 0.238433] usb usb1: Product: MUSB HDRC host driver
    [ 0.238464] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [ 0.238494] usb usb1: SerialNumber: musb-hdrc.1
    [ 0.240264] hub 1-0:1.0: USB hub found
    [ 0.240325] hub 1-0:1.0: 1 port detected
    [ 0.241516] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [ 0.242279] NET: Registered protocol family 2
    [ 0.242584] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [ 0.243103] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [ 0.243286] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [ 0.243438] TCP: Hash tables configured (established 4096 bind 4096)
    [ 0.243438] TCP reno registered
    [ 0.243469] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [ 0.243530] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [ 0.243957] NET: Registered protocol family 1
    [ 0.244415] RPC: Registered named UNIX socket transport module.
    [ 0.244445] RPC: Registered udp transport module.
    [ 0.244476] RPC: Registered tcp transport module.
    [ 0.244476] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [ 0.244934] NetWinder Floating Point Emulator V0.97 (double precision)
    [ 0.255767] VFS: Disk quotas dquot_6.5.2
    [ 0.255889] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [ 0.256927] msgmni has been set to 240
    [ 0.263183] alg: No test for stdrng (krng)
    [ 0.264282] io scheduler noop registered
    [ 0.264312] io scheduler deadline registered
    [ 0.264465] io scheduler cfq registered (default)
    [ 0.266540] Could not set LED4 to fully on
    [ 0.269653] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [ 0.842254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 0.849243] console [ttyO0] enabled
    [ 0.854003] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [ 0.862365] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [ 0.870635] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [ 0.878906] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [ 0.887145] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [ 0.896362] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [ 0.924072] brd: module loaded
    [ 0.938293] loop: module loaded
    [ 0.942016] i2c-core: driver [tsl2550] using legacy suspend method
    [ 0.948547] i2c-core: driver [tsl2550] using legacy resume method
    [ 0.955047] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [ 1.018463] No daughter card found
    [ 1.022094] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [ 1.029449] The board is a AM335x Beaglebone Black.
    [ 1.037536] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [ 1.046112] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV
    [ 1.055480] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV
    [ 1.064819] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV
    [ 1.074096] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV
    [ 1.083404] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV
    [ 1.092620] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV
    [ 1.101989] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV
    [ 1.109954] omap_hsmmc.0: alias fck already exists
    [ 1.115814] omap_hsmmc.1: alias fck already exists
    [ 1.121643] omap_i2c.3: alias fck already exists
    [ 1.127258] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [ 1.140167] mtdoops: mtd device (mtddev=name/number) must be supplied
    [ 1.147705] omap2-nand driver initializing
    [ 1.152435] OneNAND driver initializing
    [ 1.159240] CAN device driver interface
    [ 1.163299] CAN bus driver for Bosch D_CAN controller 1.0
    [ 1.218505] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [ 1.225006] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [ 1.232727] davinci_mdio.0: probed
    [ 1.236297] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [ 1.245635] usbcore: registered new interface driver zd1201
    [ 1.251922] usbcore: registered new interface driver cdc_ether
    [ 1.258392] usbcore: registered new interface driver cdc_eem
    [ 1.264709] usbcore: registered new interface driver dm9601
    [ 1.270660] cdc_ncm: 04-Aug-2011
    [ 1.274414] usbcore: registered new interface driver cdc_ncm
    [ 1.280395] Initializing USB Mass Storage driver...
    [ 1.285980] usbcore: registered new interface driver usb-storage
    [ 1.292327] USB Mass Storage support registered.
    [ 1.298126] mousedev: PS/2 mouse device common for all mice
    [ 1.306182] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [ 1.313629] i2c /dev entries driver
    [ 1.318695] Linux video capture interface: v2.00
    [ 1.324249] usbcore: registered new interface driver uvcvideo
    [ 1.330322] USB Video Class driver (1.1.1)
    [ 1.338714] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [ 1.422058] cpuidle: using governor ladder
    [ 1.427093] cpuidle: using governor menu
    [ 1.435455] omap4_aes_mod_init: loading AM33X AES driver
    [ 1.441223] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [ 1.447937] omap4_aes_probe: probe() done
    [ 1.452697] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [ 1.458953] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [ 1.476684] omap4_sham_probe: probe() done
    [ 1.486358] usbcore: registered new interface driver usbhid
    [ 1.492279] usbhid: USB HID core driver
    [ 1.497314] usbcore: registered new interface driver snd-usb-audio
    [ 1.506011] ALSA device list:
    [ 1.509185] No soundcards found.
    [ 1.512756] oprofile: hardware counters not available
    [ 1.518096] oprofile: using timer interrupt.
    [ 1.522644] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [ 1.529418] ip_tables: (C) 2000-2006 Netfilter Core Team
    [ 1.535186] TCP cubic registered
    [ 1.538635] NET: Registered protocol family 17
    [ 1.543304] can: controller area network core (rev 20090105 abi 8)
    [ 1.549957] NET: Registered protocol family 29
    [ 1.554626] can: raw protocol (rev 20090105)
    [ 1.559143] can: broadcast manager protocol (rev 20090105 t)
    [ 1.565155] Registering the dns_resolver key type
    [ 1.570220] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [ 1.578308] ThumbEE CPU extension supported.
    [ 1.582885] mux: Failed to setup hwmod io irq -22
    [ 1.588714] Power Management for AM33XX family
    [ 1.593627] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [ 1.600372] Copied the M3 firmware to UMEM
    [ 1.604766] Cortex M3 Firmware Version = 0x181
    [ 1.610168] sr_init: platform driver register failed
    [ 1.619659] clock: disabling unused clocks to save power
    [ 1.639007] mmc0: host does not support reading read-only switch. assuming write-enable.
    [ 1.649810] mmc0: new high speed SDHC card at address f3ff
    [ 1.656494] mmcblk0: mmc0:f3ff SD04G 3.69 GiB
    [ 1.663482] mmcblk0: p1 p2
    [ 1.668914] Detected MACID=bc:6a:29:93:e5:60
    [ 1.674743] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [ 1.681640] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
    [ 1.694091] EXT3-fs (mmcblk0p2): recovery required on readonly filesystem
    [ 1.701324] EXT3-fs (mmcblk0p2): write access will be enabled during recovery
    [ 2.957122] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 4.649200] kjournald starting. Commit interval 5 seconds
    [ 4.655059] EXT3-fs (mmcblk0p2): recovery complete
    [ 4.891235] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [ 4.898529] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [ 4.906341] Freeing init memory: 236K
    INIT: version 2.86 booting
    [ 5.049499] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    Please wait: booting...
    Error opening /dev/fb0: No such device
    Starting udev

  • Yonghui,

    Thanks for those info. I should say not to do the test on the modified board, because 5V directly connecting to VBUS causes the usb controller leave host mode when VBUSERROR happened. But we did not waste our time, those info gave me the direction for debugging.

    1. So please do the following test.

    - Boot the unmodified board (which has U2), without plugging in any usb device on USB1 port;

    - on serial console, run command 'cat /proc/driver/musb_hdrc.1';

    - run command "echo 'file ti81xx.c +p' > /sys/kernel/debug/dynamic_debug/control";

    - if the above command gives errors, run command 'mount -t debugfs none /sys/kernel/debug' first;

    - plug a usb device to USB1 port;

    - run command 'cat /proc/driver/musb_hdrc.1';

    - run command 'echo 'F' > /proc/driver/musb_hdrc.1';

    - run command 'cat /proc/driver/musb_hdrc.1' again;

    - run command 'dmesg > debug-vbuserror.log', and provide the log file;

    2. Please provide you modified board-am335xevm.c, I want check your code change;

    3. By the way, the kernel build warnings are not issue at all;

     

  • Yonghui Lin said:
    [ 0.233459] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [ 0.234069] MUSB0 controller's USBSS revision = 4ea20800
    [ 0.236053] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18

    [ 0.236358] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [ 0.236968] MUSB1 controller's USBSS revision = 4ea20800
    [ 0.237915] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [ 0.238159] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [ 0.238372] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [ 0.238403] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [ 0.238433] usb usb1: Product: MUSB HDRC host driver
    [ 0.238464] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [ 0.238494] usb usb1: SerialNumber: musb-hdrc.1
    [ 0.240264] hub 1-0:1.0: USB hub found
    [ 0.240325] hub 1-0:1.0: 1 port detected
    [ 0.241516] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19

    If you look closely to the log above, MUSB0 init log only has 3 lines, which is much shorter than MUSB1 init. I have never seen this before.

    It seems MUSB0 initialization failed, and MUSB1 is initialized to OTG mode, even board-am335xevm.c configured MUSB1 to HOST mode. That matches that another log shows the VBUSERROR message happens in every 2 seconds. OTG mode driver has 2-sec polling logic, but HOST does not.

    I will look into more on this tomorrow, in meantime could you please provide the USB0 part of your schematics?

  • Please also provide the log of the following commands for USB0 port right after board boots up.

    # lsusb

    # cat /proc/driver/musb_hdrc.0

  • ---------------------------------------------

    1. So please do the following test.

    - Boot the unmodified board (which has U2), without plugging in any usb device on USB1 port;

    - on serial console, run command 'cat /proc/driver/musb_hdrc.1';

    - run command "echo 'file ti81xx.c +p' > /sys/kernel/debug/dynamic_debug/control";

    - if the above command gives errors, run command 'mount -t debugfs none /sys/kernel/debug' first;

    - plug a usb device to USB1 port;

    - run command 'cat /proc/driver/musb_hdrc.1';

    - run command 'echo 'F' > /proc/driver/musb_hdrc.1';

    - run command 'cat /proc/driver/musb_hdrc.1' again;

    - run command 'dmesg > debug-vbuserror.log', and provide the log file;

    +++++++++++++++++

    log is here

    1643.debug-vbuserror.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #1 Thu Oct 31 11:05:20 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000274] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067657] pid_max: default: 32768 minimum: 301
    [    0.067901] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068725] CPU: Testing write buffer coherency: ok
    [    0.094299] omap_hwmod: pruss: failed to hardreset
    [    0.096252] print_constraints: dummy: 
    [    0.096954] NET: Registered protocol family 16
    [    0.101318] OMAP GPIO hardware version 0.1
    [    0.106994] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.111053]  omap_i2c.1: alias fck already exists
    [    0.112823]  omap2_mcspi.1: alias fck already exists
    [    0.113311]  omap2_mcspi.2: alias fck already exists
    [    0.115356]  edma.0: alias fck already exists
    [    0.115417]  edma.0: alias fck already exists
    [    0.115447]  edma.0: alias fck already exists
    [    0.176940] bio: create slab <bio-0> at 0
    [    0.181610] SCSI subsystem initialized
    [    0.184875] usbcore: registered new interface driver usbfs
    [    0.185546] usbcore: registered new interface driver hub
    [    0.185974] usbcore: registered new device driver usb
    [    0.186523] registerd cppi-dma Intr @ IRQ 17
    [    0.186553] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186584] Cppi41 Init Done
    [    0.186614] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [    0.187225] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [    0.189697] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192657] tps65910 1-002d: could not be detected
    [    0.195587] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197906] Switching to clocksource gp timer
    [    0.233184] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.233489] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.234100] MUSB0 controller's USBSS revision = 4ea20800
    [    0.234161] TxFifo Empty intr disabled
    [    0.234771] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234802] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234832] musb-hdrc: setup fifo_mode 4
    [    0.234893] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234924] musb-hdrc.0: bulk split disabled
    [    0.234924] musb-hdrc.0: bulk combine disabled
    [    0.236114] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [    0.236389] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.236999] MUSB1 controller's USBSS revision = 4ea20800
    [    0.237060] TxFifo Empty intr disabled
    [    0.237640] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.237670] musb-hdrc: MHDRC RTL version 2.0 
    [    0.237701] musb-hdrc: setup fifo_mode 4
    [    0.237762] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.237792] musb-hdrc.1: bulk split disabled
    [    0.237792] musb-hdrc.1: bulk combine disabled
    [    0.238067] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.238220] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [    0.238433] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.238464] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.238494] usb usb1: Product: MUSB HDRC host driver
    [    0.238525] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.238555] usb usb1: SerialNumber: musb-hdrc.1
    [    0.240325] hub 1-0:1.0: USB hub found
    [    0.240386] hub 1-0:1.0: 1 port detected
    [    0.241546] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.242340] NET: Registered protocol family 2
    [    0.242645] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.243164] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.243377] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.243499] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.243530] TCP reno registered
    [    0.243560] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243621] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.244049] NET: Registered protocol family 1
    [    0.244506] RPC: Registered named UNIX socket transport module.
    [    0.244537] RPC: Registered udp transport module.
    [    0.244567] RPC: Registered tcp transport module.
    [    0.244567] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.245025] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.255859] VFS: Disk quotas dquot_6.5.2
    [    0.255981] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.257019] msgmni has been set to 240
    [    0.263275] alg: No test for stdrng (krng)
    [    0.264373] io scheduler noop registered
    [    0.264404] io scheduler deadline registered
    [    0.264556] io scheduler cfq registered (default)
    [    0.266632] Could not set LED4 to fully on
    [    0.269714] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.841857] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    0.848846] console [ttyO0] enabled
    [    0.853607] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.861938] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.870208] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.878479] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.886718] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.895904] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.923645] brd: module loaded
    [    0.937835] loop: module loaded
    [    0.941558] i2c-core: driver [tsl2550] using legacy suspend method
    [    0.948059] i2c-core: driver [tsl2550] using legacy resume method
    [    0.954589] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.018493] No daughter card found
    [    1.022125] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.029479] The board is a AM335x Beaglebone Black.
    [    1.037536] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.046112] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.055511] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.064880] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.074157] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.083465] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.092681] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.102020] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.109985]  omap_hsmmc.0: alias fck already exists
    [    1.115844]  omap_hsmmc.1: alias fck already exists
    [    1.121673]  omap_i2c.3: alias fck already exists
    [    1.127258] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.140136] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.147674] omap2-nand driver initializing
    [    1.152404] OneNAND driver initializing
    [    1.159240] CAN device driver interface
    [    1.163269] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.218566] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.225067] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.232757] davinci_mdio.0: probed
    [    1.236328] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.245666] usbcore: registered new interface driver zd1201
    [    1.251953] usbcore: registered new interface driver cdc_ether
    [    1.258422] usbcore: registered new interface driver cdc_eem
    [    1.264739] usbcore: registered new interface driver dm9601
    [    1.270690] cdc_ncm: 04-Aug-2011
    [    1.274444] usbcore: registered new interface driver cdc_ncm
    [    1.280426] Initializing USB Mass Storage driver...
    [    1.286010] usbcore: registered new interface driver usb-storage
    [    1.292358] USB Mass Storage support registered.
    [    1.298156] mousedev: PS/2 mouse device common for all mice
    [    1.306213] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.313659] i2c /dev entries driver
    [    1.318725] Linux video capture interface: v2.00
    [    1.324279] usbcore: registered new interface driver uvcvideo
    [    1.330322] USB Video Class driver (1.1.1)
    [    1.338684] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.421997] cpuidle: using governor ladder
    [    1.427032] cpuidle: using governor menu
    [    1.435394] omap4_aes_mod_init: loading AM33X AES driver
    [    1.441162] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.447875] omap4_aes_probe: probe() done
    [    1.452636] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.458862] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.475524] omap4_sham_probe: probe() done
    [    1.486236] usbcore: registered new interface driver usbhid
    [    1.492156] usbhid: USB HID core driver
    [    1.497192] usbcore: registered new interface driver snd-usb-audio
    [    1.505889] ALSA device list:
    [    1.509063]   No soundcards found.
    [    1.512664] oprofile: hardware counters not available
    [    1.517974] oprofile: using timer interrupt.
    [    1.522521] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.529327] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.535064] TCP cubic registered
    [    1.538482] NET: Registered protocol family 17
    [    1.543212] can: controller area network core (rev 20090105 abi 8)
    [    1.549835] NET: Registered protocol family 29
    [    1.554504] can: raw protocol (rev 20090105)
    [    1.559020] can: broadcast manager protocol (rev 20090105 t)
    [    1.565032] Registering the dns_resolver key type
    [    1.570098] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.578186] ThumbEE CPU extension supported.
    [    1.582763] mux: Failed to setup hwmod io irq -22
    [    1.588562] Power Management for AM33XX family
    [    1.593475] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.600250] Copied the M3 firmware to UMEM
    [    1.604644] Cortex M3 Firmware Version = 0x181
    [    1.610046] sr_init: platform driver register failed
    [    1.619567] clock: disabling unused clocks to save power
    [    1.639892] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.650543] mmc0: new high speed SDHC card at address f3ff
    [    1.657226] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.664062] Detected MACID=bc:6a:29:93:e5:60
    [    1.669677]  mmcblk0: p1 p2
    [    1.673583] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.681060] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
    [    1.693450] EXT3-fs (mmcblk0p2): recovery required on readonly filesystem
    [    1.700592] EXT3-fs (mmcblk0p2): write access will be enabled during recovery
    [    1.710083] kjournald starting.  Commit interval 5 seconds
    [    1.715850] EXT3-fs (mmcblk0p2): recovery complete
    [    1.963073] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    1.970336] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    1.978027] Freeing init memory: 236K
    [    2.839080] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    2.991516] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    3.586059] alignment: ignoring faults is unsafe on this CPU.  Defaulting to fixup mode.
    [    3.892181] EXT3-fs (mmcblk0p2): using internal journal
    [    4.989196] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    5.141632] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    5.660644] net eth0: CPSW phy found : id is : 0x7c0f1
    [    7.139190] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    7.291625] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    9.289184] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    9.441619] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   11.439178] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   11.591613] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   13.589202] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   13.741638] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   15.739227] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   15.891662] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   17.889862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   18.042297] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   20.039855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   20.192291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   22.189849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   22.342285] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   24.339843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   24.492279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   26.489898] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   26.642333] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   28.639892] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   28.792327] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   30.789886] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   30.942321] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   32.939880] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   33.092315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   35.089843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   35.242248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   37.239837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   37.392242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   39.389862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   39.542266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   41.539825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   41.692260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   43.689819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   43.842254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   45.839813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   45.992248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   47.989868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   48.142272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   50.139831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   50.292236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   52.289825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   52.442260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   54.439849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   54.592254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   56.589843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   56.742279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   58.739837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   58.892272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   60.889831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   61.042266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   63.039855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   63.192260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   65.189849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   65.342254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   67.339813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   67.492248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   69.489837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   69.642272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   71.639831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   71.792266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   73.789825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   73.942260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   75.939849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   76.092285] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   78.089813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   78.242248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   80.239837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   80.392242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   82.389831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   82.542297] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   84.539825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   84.692291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   86.689819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   86.842254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   88.839843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   88.992279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   90.989837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   91.142272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   93.139862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   93.292266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   95.289855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   95.442291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   97.439849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   97.592315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   99.589843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   99.742279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  101.739837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  101.892242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  103.889831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  104.042266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  106.039825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  106.192260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  108.189849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  108.342254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  110.339843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  110.492248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  112.489807] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  112.642272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  114.639862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  114.792266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  116.789825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  116.942260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  118.939819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  119.092254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  121.089813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  121.242279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  123.239837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  123.392272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  125.389831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  125.542266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  127.539855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  127.692291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  129.689819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  129.842254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  131.839843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  131.992279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  133.989837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  134.142272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  136.139831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  136.292266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  138.289825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  138.442260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  140.439819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  140.592254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  142.589843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  142.742279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  144.739837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  144.892242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  146.889831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  147.042266] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  148.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  149.039825] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  149.039855] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.039886] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  149.046875] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  149.092285] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  149.092315] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  149.092346] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  149.192291] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.192321] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  149.199310] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  150.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  151.189819] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  151.189849] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  151.189849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  151.196838] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  151.242279] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  151.242309] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  151.242340] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  151.342285] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  151.342315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  151.349273] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  152.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  153.339813] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  153.339874] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  153.339874] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  153.346801] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  153.392303] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  153.392333] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  153.392333] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  153.492309] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  153.492309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  153.499298] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  154.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  155.489837] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  155.489868] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  155.489868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  155.496856] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  155.542297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  155.542327] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  155.542327] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  155.642303] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  155.642333] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  155.649291] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  156.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  157.639862] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  157.639892] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  157.639923] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  157.646881] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  157.692321] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  157.692352] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  157.692382] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  157.792327] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  157.792358] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  157.799346] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  158.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  159.789825] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  159.789855] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  159.789855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  159.796844] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  159.842285] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  159.842315] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  159.842346] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  159.942291] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  159.942321] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  159.949279] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  160.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  161.939849] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  161.939880] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  161.939910] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  161.946899] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  161.992340] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  161.992370] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  161.992370] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  162.092315] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  162.092346] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  162.099334] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  162.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  164.089813] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  164.089843] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  164.089874] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  164.096862] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  164.142303] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  164.142333] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  164.142364] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  164.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  164.242279] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  164.242309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  164.249298] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  166.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  166.239837] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  166.239868] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  166.239868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  166.246795] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  166.292297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  166.292327] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  166.292327] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  166.392303] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  166.392333] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  166.399322] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  168.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  168.389831] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  168.389862] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  168.389862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  168.396850] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  168.442291] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  168.442321] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  168.442352] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  168.542297] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  168.542327] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  168.549285] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  170.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  170.539825] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  170.539855] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  170.539855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  170.546844] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  170.592285] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  170.592315] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  170.592315] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  170.692291] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  170.692321] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  170.699279] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  172.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  172.689849] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  172.689880] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  172.689880] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  172.696868] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  172.742340] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  172.742340] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  172.742370] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  172.842315] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  172.842346] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  172.849334] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  174.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  174.839813] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  174.839843] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  174.839874] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  174.846832] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  174.892303] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  174.892303] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  174.892333] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  174.992279] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  174.992309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  174.999298] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  176.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  176.856597] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  176.856628] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  176.856628] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  176.956573] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  176.956604] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  176.963562] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  178.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  178.949829] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  178.949859] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  178.949859] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  178.956848] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  179.002288] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  179.002319] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  179.002319] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  179.102294] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  179.102325] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  179.109283] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  180.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  181.099822] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  181.099853] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  181.099853] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  181.106842] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  181.152282] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  181.152313] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  181.152343] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  181.252288] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  181.252319] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  181.259277] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  182.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  183.249847] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  183.249877] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  183.249908] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  183.256866] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  183.302337] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  183.302337] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  183.302368] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  183.402313] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  183.402343] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  183.409332] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  184.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  185.399810] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  185.399841] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  185.399871] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  185.406860] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  185.452301] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  185.452301] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  185.452331] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  185.552276] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  185.552307] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  185.559295] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  186.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  187.549865] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  187.549896] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  187.549926] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  187.556915] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  187.602355] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  187.602386] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  187.602386] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  187.702331] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  187.702362] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  187.709350] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  188.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  189.699829] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  189.699859] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  189.699890] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  189.706878] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  189.752319] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  189.752349] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  189.752349] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  189.852325] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  189.852355] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  189.859344] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  190.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  191.849822] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  191.849853] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  191.849853] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  191.856842] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  191.902282] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  191.902313] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  191.902343] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  192.002288] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  192.002319] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  192.009277] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  192.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  193.999816] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  193.999877] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  193.999877] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  194.006805] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  194.052307] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  194.052337] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  194.052337] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  194.152313] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  194.152313] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  194.159301] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  194.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  196.149810] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  196.149841] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  196.149871] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  196.156829] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  196.202301] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  196.202301] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  196.202331] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  196.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  196.302276] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  196.302307] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  196.309265] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  198.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  198.299804] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  198.299835] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  198.299865] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  198.306854] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  198.352294] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  198.352294] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  198.352325] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    

    ------------------------------

    2. Please provide you modified board-am335xevm.c, I want check your code change;

    +++++++++++++++++

    file is here:

    3225.board-am335xevm.c

     

  • ----------------------

    I will look into more on this tomorrow, in meantime could you please provide the USB0 part of your schematics?

    +++++++++++++

    USB0 related pins are floated and not connected to anything yet (includes connectors and res/cap).

    -----------------------

    #lsusb

    +++++++++++++

    lsusb only output one line:

    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    ------------------------

    # cat /proc/driver/musb_hdrc.0

    ++++++++++++++

    (when usb-stick is plugged in)

    cat /proc/driver/musb_hdrc.0
    Status: MHDRC, Mode=Peripheral (Power=70, DevCtl=80)
    OTG state: b_idle; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000000
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    Gadget driver: (none)

    ep0 (hw0): 1buf, csr 0000 maxp 0000
    (queue empty)

    (when usb-stick is plugged out)

    cat /proc/driver/musb_hdrc.0
    Status: MHDRC, Mode=Peripheral (Power=60, DevCtl=80)
    OTG state: b_idle; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000000
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    Gadget driver: (none)

    ep0 (hw0): 1buf, csr 0000 maxp 0000
    (queue empty)


  • Yonghui Lin said:

    # cat /proc/driver/musb_hdrc.0

    ++++++++++++++

    (when usb-stick is plugged in)

    You plugged the usb-stick to USB1 not USB0, right?

    Can you please post the USB0 part of the schematics?

  • Yes, surely plug into USB1.

    USB0 singals are not layed out.

      

  • Yonghui,

    It seems you did follow the exact procedure when you capture the log debug-vbuserror.log (there is no message for 'cat /proc/...'), but it is not a big deal. My only question for the log is that did you plug a usb device on USB1 port when capturing the log?

    USB0 is not layed out, but do you have VDDA1P8V_USB0 and VDDA3P3V_USB0 pins connected to the power rails? If not, are those pins brought out then can be connected?

    Can you please try a test with the following patch in board-am335xevm.c to see if the VBUSERR still happens? Modify line 2693

            .mode           = (MUSB_HOST << 4) | MUSB_OTG,

    to

            .mode           = (MUSB_HOST << 4) | MUSB_HOST,

    If it still happens, please follow my instruction to capture debug-vbuserror.log again.

  • I've followed your commands step by step, only executed "cat /proc/..." command twice each time for more info.

    VDDA1P8V_USB0 and VDDA3P3V_USB0 should be powered correctly (connecting to TPS65217C's LDO3 and LDO4 separately), I'll check the actual voltage tomorrow.

    I've modified line 2693 as your suggested, still warning appears as before.

    New error log is attached here.

    8231.debug-vbuserror2.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #2 Thu Oct 31 22:23:29 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000305] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067657] pid_max: default: 32768 minimum: 301
    [    0.067901] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068725] CPU: Testing write buffer coherency: ok
    [    0.094268] omap_hwmod: pruss: failed to hardreset
    [    0.096221] print_constraints: dummy: 
    [    0.096923] NET: Registered protocol family 16
    [    0.101318] OMAP GPIO hardware version 0.1
    [    0.106994] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.111053]  omap_i2c.1: alias fck already exists
    [    0.112823]  omap2_mcspi.1: alias fck already exists
    [    0.113311]  omap2_mcspi.2: alias fck already exists
    [    0.115356]  edma.0: alias fck already exists
    [    0.115386]  edma.0: alias fck already exists
    [    0.115447]  edma.0: alias fck already exists
    [    0.176910] bio: create slab <bio-0> at 0
    [    0.181549] SCSI subsystem initialized
    [    0.184875] usbcore: registered new interface driver usbfs
    [    0.185546] usbcore: registered new interface driver hub
    [    0.185943] usbcore: registered new device driver usb
    [    0.186492] registerd cppi-dma Intr @ IRQ 17
    [    0.186523] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186553] Cppi41 Init Done
    [    0.186614] musb-ti81xx musb-ti81xx: musb0, board_mode=0x11, plat_mode=0x1
    [    0.187194] musb-ti81xx musb-ti81xx: musb1, board_mode=0x11, plat_mode=0x1
    [    0.189697] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192657] tps65910 1-002d: could not be detected
    [    0.195587] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197875] Switching to clocksource gp timer
    [    0.233215] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.233489] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.234130] MUSB0 controller's USBSS revision = 4ea20800
    [    0.234191] TxFifo Empty intr disabled
    [    0.234802] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234832] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234863] musb-hdrc: setup fifo_mode 4
    [    0.234924] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234954] musb-hdrc.0: bulk split disabled
    [    0.234985] musb-hdrc.0: bulk combine disabled
    [    0.235137] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    [    0.235351] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1
    [    0.235595] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.235626] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.235656] usb usb1: Product: MUSB HDRC host driver
    [    0.235687] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.235687] usb usb1: SerialNumber: musb-hdrc.0
    [    0.237426] hub 1-0:1.0: USB hub found
    [    0.237487] hub 1-0:1.0: 1 port detected
    [    0.238830] musb-hdrc musb-hdrc.0: USB Host mode controller at c883c000 using DMA, IRQ 18
    [    0.239135] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.239776] MUSB1 controller's USBSS revision = 4ea20800
    [    0.239807] TxFifo Empty intr disabled
    [    0.240417] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.240447] musb-hdrc: MHDRC RTL version 2.0 
    [    0.240478] musb-hdrc: setup fifo_mode 4
    [    0.240509] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.240539] musb-hdrc.1: bulk split disabled
    [    0.240570] musb-hdrc.1: bulk combine disabled
    [    0.240722] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.240814] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2
    [    0.241027] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.241058] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.241088] usb usb2: Product: MUSB HDRC host driver
    [    0.241119] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.241119] usb usb2: SerialNumber: musb-hdrc.1
    [    0.242706] hub 2-0:1.0: USB hub found
    [    0.242767] hub 2-0:1.0: 1 port detected
    [    0.243804] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.244567] NET: Registered protocol family 2
    [    0.244873] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.245422] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.245635] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.245758] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.245788] TCP reno registered
    [    0.245819] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.245849] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.246276] NET: Registered protocol family 1
    [    0.246765] RPC: Registered named UNIX socket transport module.
    [    0.246765] RPC: Registered udp transport module.
    [    0.246795] RPC: Registered tcp transport module.
    [    0.246826] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.247253] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.258270] VFS: Disk quotas dquot_6.5.2
    [    0.258392] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.259429] msgmni has been set to 240
    [    0.265563] alg: No test for stdrng (krng)
    [    0.266662] io scheduler noop registered
    [    0.266693] io scheduler deadline registered
    [    0.266815] io scheduler cfq registered (default)
    [    0.269042] Could not set LED4 to fully on
    [    0.272094] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.896301] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    0.903289] console [ttyO0] enabled
    [    0.908081] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.916442] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.924743] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.932983] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.941253] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.950561] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.978179] brd: module loaded
    [    0.992340] loop: module loaded
    [    0.996002] i2c-core: driver [tsl2550] using legacy suspend method
    [    1.002532] i2c-core: driver [tsl2550] using legacy resume method
    [    1.009094] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.068481] No daughter card found
    [    1.072174] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.079498] The board is a AM335x Beaglebone Black.
    [    1.087646] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.096069] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.105438] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.114807] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.124084] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.133422] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.142669] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.152038] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.160003]  omap_hsmmc.0: alias fck already exists
    [    1.165832]  omap_hsmmc.1: alias fck already exists
    [    1.171661]  omap_i2c.3: alias fck already exists
    [    1.177276] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.190155] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.197692] omap2-nand driver initializing
    [    1.202423] OneNAND driver initializing
    [    1.209259] CAN device driver interface
    [    1.213317] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.268554] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.275054] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.282775] davinci_mdio.0: probed
    [    1.286346] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.295715] usbcore: registered new interface driver zd1201
    [    1.302001] usbcore: registered new interface driver cdc_ether
    [    1.308471] usbcore: registered new interface driver cdc_eem
    [    1.314788] usbcore: registered new interface driver dm9601
    [    1.320739] cdc_ncm: 04-Aug-2011
    [    1.324493] usbcore: registered new interface driver cdc_ncm
    [    1.330474] Initializing USB Mass Storage driver...
    [    1.336120] usbcore: registered new interface driver usb-storage
    [    1.342437] USB Mass Storage support registered.
    [    1.348266] mousedev: PS/2 mouse device common for all mice
    [    1.356323] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.363800] i2c /dev entries driver
    [    1.368865] Linux video capture interface: v2.00
    [    1.374389] usbcore: registered new interface driver uvcvideo
    [    1.380493] USB Video Class driver (1.1.1)
    [    1.388916] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.472198] cpuidle: using governor ladder
    [    1.477172] cpuidle: using governor menu
    [    1.485443] omap4_aes_mod_init: loading AM33X AES driver
    [    1.491210] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.497894] omap4_aes_probe: probe() done
    [    1.502685] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.508911] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.526580] omap4_sham_probe: probe() done
    [    1.536254] usbcore: registered new interface driver usbhid
    [    1.542175] usbhid: USB HID core driver
    [    1.547271] usbcore: registered new interface driver snd-usb-audio
    [    1.555969] ALSA device list:
    [    1.559143]   No soundcards found.
    [    1.562744] oprofile: hardware counters not available
    [    1.568054] oprofile: using timer interrupt.
    [    1.572601] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.579406] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.585113] TCP cubic registered
    [    1.588531] NET: Registered protocol family 17
    [    1.593231] can: controller area network core (rev 20090105 abi 8)
    [    1.599884] NET: Registered protocol family 29
    [    1.604583] can: raw protocol (rev 20090105)
    [    1.609100] can: broadcast manager protocol (rev 20090105 t)
    [    1.615112] Registering the dns_resolver key type
    [    1.620147] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.628234] ThumbEE CPU extension supported.
    [    1.632843] mux: Failed to setup hwmod io irq -22
    [    1.638641] Power Management for AM33XX family
    [    1.643554] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.650299] Copied the M3 firmware to UMEM
    [    1.654724] Cortex M3 Firmware Version = 0x181
    [    1.660095] sr_init: platform driver register failed
    [    1.669616] clock: disabling unused clocks to save power
    [    1.689392] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.700073] mmc0: new high speed SDHC card at address f3ff
    [    1.706726] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.713409]  mmcblk0: p1 p2
    [    1.718780] Detected MACID=bc:6a:29:93:e5:60
    [    1.724609] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.731475] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
    [    1.743865] EXT3-fs (mmcblk0p2): recovery required on readonly filesystem
    [    1.751068] EXT3-fs (mmcblk0p2): write access will be enabled during recovery
    [    1.762878] kjournald starting.  Commit interval 5 seconds
    [    1.768737] EXT3-fs (mmcblk0p2): recovery complete
    [    2.026092] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    2.033355] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    2.041076] Freeing init memory: 236K
    [    2.889099] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    3.041534] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    3.665954] alignment: ignoring faults is unsafe on this CPU.  Defaulting to fixup mode.
    [    3.976745] EXT3-fs (mmcblk0p2): using internal journal
    [    5.039184] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    5.191589] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    5.744537] net eth0: CPSW phy found : id is : 0x7c0f1
    [    7.189178] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    7.341583] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    9.339172] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [    9.491577] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   11.489196] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   11.641601] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   13.639190] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   13.791625] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   15.789245] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   15.941680] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   17.939849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   18.092285] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   20.089813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   20.242248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   22.239837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   22.392272] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   24.389862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   24.542297] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   26.539855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   26.692291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   28.689849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   28.842285] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   30.839843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   30.992279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   32.989837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   33.142303] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   35.139862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   35.292297] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   37.289825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   37.442260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   39.439849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   39.592254] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   41.589813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   41.742248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   43.739807] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   43.892242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   45.889801] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   46.042236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   48.039825] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   48.192230] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   50.189788] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   50.342224] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   52.339813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   52.492248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   54.489837] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   54.642242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   56.639801] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   56.792236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   58.789794] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   58.942230] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   60.939788] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   61.092224] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   63.089813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   63.242248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   65.239807] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   65.392242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   67.389831] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   67.542236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   69.539855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   69.692260] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   71.689819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   71.842224] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   73.839843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   73.992279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   75.989807] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   76.142242] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   78.139801] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   78.292236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   80.289794] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   80.442230] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   82.439819] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   82.592285] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   84.589813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   84.742248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   86.739807] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   86.739868] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.739868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   86.746856] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   86.792297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   86.792327] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   86.792327] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   86.892303] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.892303] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   86.899291] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   88.889831] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   88.889862] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   88.889862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   88.896850] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   88.942291] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   88.942321] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   88.942352] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   89.042297] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   89.042327] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   89.049285] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   91.039794] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   91.039825] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.039855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   91.046844] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   91.092285] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   91.092315] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   91.092346] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   91.192291] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.192291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   91.199279] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   93.189819] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   93.189849] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   93.189849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   93.196838] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   93.242279] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   93.242309] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   93.242340] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   93.342285] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   93.342315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   93.349273] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   95.339813] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   95.339843] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.339874] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   95.346832] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   95.392303] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   95.392303] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   95.392333] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   95.492309] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.492309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   95.499298] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   97.489837] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   97.489837] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.489868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   97.496856] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   97.542297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   97.542327] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   97.542327] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   97.642333] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.642364] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   97.649353] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [   99.639831] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [   99.639862] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   99.639862] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   99.646850] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [   99.692291] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   99.692321] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   99.692352] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [   99.792297] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   99.792327] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [   99.799285] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  101.789794] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  101.789825] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  101.789855] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  101.796813] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  101.842285] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  101.842285] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  101.842315] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  101.942260] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  101.942291] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  101.949279] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  103.939819] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  103.939849] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  103.939880] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  103.946868] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  103.992309] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  103.992340] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  103.992340] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  104.092285] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  104.092315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  104.099304] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  106.089782] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  106.089813] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  106.089813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  106.096801] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  106.142242] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  106.142272] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  106.142303] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  106.242248] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  106.242279] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  106.249237] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  108.239807] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  108.239837] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  108.239868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  108.246856] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  108.292297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  108.292327] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  108.292358] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  108.392303] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  108.392333] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  108.399291] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  110.389831] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  110.389862] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  110.389892] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  110.396881] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  110.442321] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  110.442352] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  110.442352] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  110.542327] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  110.542327] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  110.549316] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  112.539825] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  112.539855] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  112.539886] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  112.546875] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  112.592315] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  112.592346] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  112.592376] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  112.692321] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  112.692321] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  112.699310] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  114.689819] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  114.689849] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.689849] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  114.696838] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  114.742279] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  114.742309] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  114.742340] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  114.842285] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.842315] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  114.849304] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  116.839813] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  116.839843] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  116.839843] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  116.846832] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  116.892272] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  116.892303] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  116.892333] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  116.992279] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  116.992309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  116.999267] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  118.301361] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  118.301391] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  118.301422] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  118.401367] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  118.401397] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  118.408355] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  120.399810] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  120.399841] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.399841] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  120.406829] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  120.452270] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.452301] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.452301] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  120.552276] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.552307] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  120.559265] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  122.549835] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  122.549896] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.549896] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  122.556884] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  122.602325] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.602355] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.602386] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  122.702331] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.702362] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  122.709320] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  124.699829] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  124.699859] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.699890] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  124.706848] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  124.752288] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.752319] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.752349] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  124.852294] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.852325] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  124.859252] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  126.849792] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  126.849822] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.849853] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  126.856842] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  126.902282] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.902313] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.902313] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  127.002288] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.002288] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  127.009277] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  128.999816] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  128.999847] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.999877] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  129.006866] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  129.052307] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.052337] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.052337] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  129.152282] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.152313] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  129.159301] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  131.149810] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  131.149810] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.149841] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  131.156829] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  131.202270] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.202301] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.202301] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  131.302276] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.302276] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  131.309265] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  133.299835] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  133.299865] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.299896] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  133.306884] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  133.352325] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.352355] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.352355] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  133.452301] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.452331] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  133.459320] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  135.449829] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  135.449859] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.449859] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  135.456848] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  135.502288] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.502319] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.502349] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  135.602294] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.602325] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  135.609313] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  137.599822] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  137.599884] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.599884] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  137.606872] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  137.652313] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.652343] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.652374] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  137.752319] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.752319] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  137.759307] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  139.749786] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  139.749816] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.749847] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  139.756805] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  139.802276] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.802276] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.802307] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  139.902282] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.902282] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  139.909271] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    [  141.899810] musb-hdrc musb-hdrc.1: Poll devctl 80 (a_wait_vfall)
    [  141.899841] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.899841] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  141.906829] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 81
    [  141.952270] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.952301] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.952301] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vfall), devctl 01
    [  142.052276] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.052276] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [  142.059265] musb-hdrc musb-hdrc.1: VBUS off (a_wait_vfall) ERROR, devctl 90
    
     It seems similar with what I attached before, so I also attach what I saw here:

    - on serial console, run command 'cat /proc/driver/musb_hdrc.1';

    cat /proc/driver/musb_hdrc.1[ 56.639801] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 56.792236] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    Status: MHDRC, Mode=Host (Power=e0, DevCtl=80)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0

    - run command "echo 'file ti81xx.c +p' > /sys/kernel/debug/dynamic_debug/control";

    - if the above command gives errors, run command 'mount -t debugfs none /sys/kernel/debug' first;

    echo 'file ti81xx.c +p' > /sys/kernel/debug/dynamic_debug/con
    trol[ 84.589813] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 84.742248] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    root@am335x-evm:~# [ 86.739868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    - plug a usb device to USB1 port;

    - run command 'cat /proc/driver/musb_hdrc.1';

    cat /proc/driver/musb_hdrc.1[ 108.239868] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 108.392333] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    Status: MHDRC, Mode=Host (Power=f0, DevCtl=88)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0

    - run command 'echo 'F' > /proc/driver/musb_hdrc.1';

    [ 116.992309] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    echo 'F' > /proc/driver/musb_hdrc.1
    root@am335x-evm:~# [ 118.401397] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    - run command 'cat /proc/driver/musb_hdrc.1' again;

    [ 124.852325] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    cat /proc/driver/musb_hdrc.1[ 126.849853] ti81xx_interrupt 1146: VBUS error workaround (delay coming)
    [ 127.002288] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    Status: MHDRC, Mode=Host (Power=e0, DevCtl=80)
    OTG state: a_wait_vfall; inactive
    Options: ?dma?, otg (peripheral+host), [eps=16]
    Peripheral address: 00
    Root port status: 00000100
    CPPI: txcr=0 txsrc=0 txena=0; rxcr=0 rxsrc=280de80 rxena=0
    root@am335x-evm:~# [ 128.999877] ti81xx_interrupt 1146: VBUS error workaround (delay coming)

    - run command 'dmesg > debug-vbuserror.log', and provide the log file;

  • Yonghui,

    Please revert the change I asked before in board-am335xevm.c and only apply the patch attached below. If the VBUSERROR still happens or the usb device is not enumerated, please follow the same procedure to capture the log.

    Please try both plug in the usb device *after* and *before* power on the board. Use the unmodified board to run the test please.

    The attached patch is NOT a zip file, please just rename it to *.patch. This forum does not allow attachments with .patch extension. :(

    6378.0001-Revert-usb-musb-ti81xx-fix-for-handling-vbus-error.zip

  • Liu Bin,

    I've modified USB part hardware and board-am335xevm.c back, patched your file to my kernel, now the flood of warnings disappear, only saw once before login.

    But not usb still can not enumerate, I checked DRVVBUS line, when usb stick is plugging in, it keeps low, same as VBUS, seems USB part does not know usb device is plugged in. I noticed that, when powering on, if usb stick is plugged in, it twinkles once.

    I've made same testing as before, please check below files. log

    8524.debug-vbuserror.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #3 Fri Nov 1 11:15:12 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000335] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067687] pid_max: default: 32768 minimum: 301
    [    0.067932] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068756] CPU: Testing write buffer coherency: ok
    [    0.094299] omap_hwmod: pruss: failed to hardreset
    [    0.096282] print_constraints: dummy: 
    [    0.096954] NET: Registered protocol family 16
    [    0.101318] OMAP GPIO hardware version 0.1
    [    0.106933] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.110992]  omap_i2c.1: alias fck already exists
    [    0.112792]  omap2_mcspi.1: alias fck already exists
    [    0.113250]  omap2_mcspi.2: alias fck already exists
    [    0.115295]  edma.0: alias fck already exists
    [    0.115325]  edma.0: alias fck already exists
    [    0.115386]  edma.0: alias fck already exists
    [    0.176666] bio: create slab <bio-0> at 0
    [    0.181304] SCSI subsystem initialized
    [    0.184600] usbcore: registered new interface driver usbfs
    [    0.185272] usbcore: registered new interface driver hub
    [    0.185668] usbcore: registered new device driver usb
    [    0.186248] registerd cppi-dma Intr @ IRQ 17
    [    0.186248] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186279] Cppi41 Init Done
    [    0.186340] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [    0.186920] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [    0.189392] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192352] tps65910 1-002d: could not be detected
    [    0.195251] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197509] Switching to clocksource gp timer
    [    0.232788] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.233062] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.233703] MUSB0 controller's USBSS revision = 4ea20800
    [    0.233734] TxFifo Empty intr disabled
    [    0.234344] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234405] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234405] musb-hdrc: setup fifo_mode 4
    [    0.234466] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234497] musb-hdrc.0: bulk split disabled
    [    0.234527] musb-hdrc.0: bulk combine disabled
    [    0.235687] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [    0.235961] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.236602] MUSB1 controller's USBSS revision = 4ea20800
    [    0.236633] TxFifo Empty intr disabled
    [    0.237243] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.237274] musb-hdrc: MHDRC RTL version 2.0 
    [    0.237304] musb-hdrc: setup fifo_mode 4
    [    0.237335] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.237365] musb-hdrc.1: bulk split disabled
    [    0.237396] musb-hdrc.1: bulk combine disabled
    [    0.237640] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.237823] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [    0.238037] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.238067] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.238098] usb usb1: Product: MUSB HDRC host driver
    [    0.238128] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.238159] usb usb1: SerialNumber: musb-hdrc.1
    [    0.239898] hub 1-0:1.0: USB hub found
    [    0.239959] hub 1-0:1.0: 1 port detected
    [    0.241088] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.241882] NET: Registered protocol family 2
    [    0.242187] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.242706] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.242919] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.243041] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.243072] TCP reno registered
    [    0.243072] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243133] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243560] NET: Registered protocol family 1
    [    0.244018] RPC: Registered named UNIX socket transport module.
    [    0.244049] RPC: Registered udp transport module.
    [    0.244079] RPC: Registered tcp transport module.
    [    0.244079] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.244537] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.255371] VFS: Disk quotas dquot_6.5.2
    [    0.255493] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.256530] msgmni has been set to 240
    [    0.262756] alg: No test for stdrng (krng)
    [    0.263885] io scheduler noop registered
    [    0.263885] io scheduler deadline registered
    [    0.264038] io scheduler cfq registered (default)
    [    0.266113] Could not set LED4 to fully on
    [    0.269226] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.841186] ti81xx_interrupt 1152: VBUS error workaround (delay coming)
    [    0.848175] console [ttyO0] enabled
    [    0.852935] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.861267] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.869567] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.877777] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.886016] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.895233] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.922882] brd: module loaded
    [    0.937103] loop: module loaded
    [    0.940826] i2c-core: driver [tsl2550] using legacy suspend method
    [    0.947296] i2c-core: driver [tsl2550] using legacy resume method
    [    0.953826] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.018096] No daughter card found
    [    1.021728] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.029052] The board is a AM335x Beaglebone Black.
    [    1.037139] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.045501] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.055084] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.064453] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.073699] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.083007] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.092224] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.101562] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.109527]  omap_hsmmc.0: alias fck already exists
    [    1.115386]  omap_hsmmc.1: alias fck already exists
    [    1.121215]  omap_i2c.3: alias fck already exists
    [    1.126831] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.139678] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.147216] omap2-nand driver initializing
    [    1.151947] OneNAND driver initializing
    [    1.158752] CAN device driver interface
    [    1.162780] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.218139] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.224639] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.232391] davinci_mdio.0: probed
    [    1.235961] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.245300] usbcore: registered new interface driver zd1201
    [    1.251586] usbcore: registered new interface driver cdc_ether
    [    1.258026] usbcore: registered new interface driver cdc_eem
    [    1.264343] usbcore: registered new interface driver dm9601
    [    1.270294] cdc_ncm: 04-Aug-2011
    [    1.274017] usbcore: registered new interface driver cdc_ncm
    [    1.279998] Initializing USB Mass Storage driver...
    [    1.285552] usbcore: registered new interface driver usb-storage
    [    1.291900] USB Mass Storage support registered.
    [    1.297729] mousedev: PS/2 mouse device common for all mice
    [    1.305786] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.313232] i2c /dev entries driver
    [    1.318267] Linux video capture interface: v2.00
    [    1.323822] usbcore: registered new interface driver uvcvideo
    [    1.329895] USB Video Class driver (1.1.1)
    [    1.338256] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.421600] cpuidle: using governor ladder
    [    1.426605] cpuidle: using governor menu
    [    1.434967] omap4_aes_mod_init: loading AM33X AES driver
    [    1.440734] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.447448] omap4_aes_probe: probe() done
    [    1.452209] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.458465] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.475067] omap4_sham_probe: probe() done
    [    1.485870] usbcore: registered new interface driver usbhid
    [    1.491760] usbhid: USB HID core driver
    [    1.496826] usbcore: registered new interface driver snd-usb-audio
    [    1.505523] ALSA device list:
    [    1.508697]   No soundcards found.
    [    1.512268] oprofile: hardware counters not available
    [    1.517578] oprofile: using timer interrupt.
    [    1.522125] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.528930] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.534698] TCP cubic registered
    [    1.538085] NET: Registered protocol family 17
    [    1.542816] can: controller area network core (rev 20090105 abi 8)
    [    1.549468] NET: Registered protocol family 29
    [    1.554138] can: raw protocol (rev 20090105)
    [    1.558654] can: broadcast manager protocol (rev 20090105 t)
    [    1.564666] Registering the dns_resolver key type
    [    1.569732] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.577819] ThumbEE CPU extension supported.
    [    1.582397] mux: Failed to setup hwmod io irq -22
    [    1.588195] Power Management for AM33XX family
    [    1.593078] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.599853] Copied the M3 firmware to UMEM
    [    1.604248] Cortex M3 Firmware Version = 0x181
    [    1.609649] sr_init: platform driver register failed
    [    1.619110] clock: disabling unused clocks to save power
    [    1.639404] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.650054] mmc0: new high speed SDHC card at address f3ff
    [    1.656738] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.663543] Detected MACID=bc:6a:29:93:e5:60
    [    1.669158]  mmcblk0: p1 p2
    [    1.673065] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.680511] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
    [    1.692993] EXT3-fs (mmcblk0p2): recovery required on readonly filesystem
    [    1.700134] EXT3-fs (mmcblk0p2): write access will be enabled during recovery
    [    5.345062] kjournald starting.  Commit interval 5 seconds
    [    5.350982] EXT3-fs (mmcblk0p2): recovery complete
    [    5.826690] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    5.833953] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    5.841674] Freeing init memory: 236K
    [    9.702880] EXT3-fs (mmcblk0p2): using internal journal
    [   10.464080] net eth0: CPSW phy found : id is : 0x7c0f1
    [   20.187652] Disabling lock debugging due to kernel taint
    [   26.908111]  gadget: Mass Storage Function, version: 2009/09/11
    [   26.914489]  gadget: Number of LUNs=1
    [   26.918365]  lun0: LUN: removable file: /dev/mmcblk0p1
    [   26.923828]  gadget: Mass Storage Gadget, version: 2009/09/11
    [   26.929901]  gadget: userspace failed to provide iSerialNumber
    [   26.936065]  gadget: g_mass_storage ready
    [   26.940338] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    [   26.946014] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
    [   26.953979] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    [   26.961151] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [   26.968750] usb usb2: Product: MUSB HDRC host driver
    [   26.973999] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
    [   26.979614] usb usb2: SerialNumber: musb-hdrc.0
    [   26.985168] hub 2-0:1.0: USB hub found
    [   26.989135] hub 2-0:1.0: 1 port detected
    [   80.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   82.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   84.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   86.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   88.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   90.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   92.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   94.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   96.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   98.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  100.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  102.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  104.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  106.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  108.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  110.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  112.239654] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  113.682708] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  113.682739] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  113.682739] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  113.782684] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  113.835113] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  113.835144] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  113.835144] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  113.935119] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  113.987548] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  113.987579] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  113.987579] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  114.087554] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.139984] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  114.139984] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  114.140014] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  114.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  114.239990] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.402099] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  114.402099] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  114.402130] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  114.459655] hub 1-0:1.0: over-current condition on port 1
    [  114.502105] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.662078] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  114.662109] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  114.662139] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  114.719665] hub 1-0:1.0: over-current condition on port 1
    [  114.762084] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  114.922088] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  114.922088] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  114.922119] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  114.979644] hub 1-0:1.0: over-current condition on port 1
    [  115.022064] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  115.182098] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  115.182098] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  115.182128] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  115.239654] hub 1-0:1.0: over-current condition on port 1
    [  115.282104] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  115.442108] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  115.442138] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  115.442169] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  115.499694] hub 1-0:1.0: over-current condition on port 1
    [  115.542083] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  115.702087] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  115.702087] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  115.702117] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  115.759643] hub 1-0:1.0: over-current condition on port 1
    [  115.802093] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  115.962066] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  115.962097] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  115.962127] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  116.019653] hub 1-0:1.0: over-current condition on port 1
    [  116.062072] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  116.222076] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  116.222106] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  116.222106] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  116.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  116.279663] hub 1-0:1.0: over-current condition on port 1
    [  116.322082] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  116.482086] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  116.482116] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  116.482116] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  116.539642] hub 1-0:1.0: over-current condition on port 1
    [  116.582092] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  116.742095] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  116.742095] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  116.742126] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  116.799652] hub 1-0:1.0: over-current condition on port 1
    [  116.842102] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  117.002075] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  117.002105] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  117.002105] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  117.059631] hub 1-0:1.0: over-current condition on port 1
    [  117.102081] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  117.262084] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  117.262115] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  117.262145] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  117.319641] hub 1-0:1.0: over-current condition on port 1
    [  117.362091] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  117.522064] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  117.522094] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  117.522125] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  117.579650] hub 1-0:1.0: over-current condition on port 1
    [  117.622070] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  117.782073] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  117.782104] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  117.782135] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  117.839630] hub 1-0:1.0: over-current condition on port 1
    [  117.882080] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  118.042083] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  118.042083] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  118.042114] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  118.099639] hub 1-0:1.0: over-current condition on port 1
    [  118.142089] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  118.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  118.302307] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  118.302337] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  118.302337] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  118.359619] hub 1-0:1.0: over-current condition on port 1
    [  118.402313] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  118.562072] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  118.562103] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  118.562103] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  118.619628] hub 1-0:1.0: over-current condition on port 1
    [  118.662078] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  118.822082] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  118.822082] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  118.822113] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  118.879638] hub 1-0:1.0: over-current condition on port 1
    [  118.922088] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  119.082092] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  119.082092] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  119.082122] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  119.139648] hub 1-0:1.0: over-current condition on port 1
    [  119.182067] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  119.342071] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  119.342102] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  119.342132] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  119.399658] hub 1-0:1.0: over-current condition on port 1
    [  119.442077] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  119.602050] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  119.602081] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  119.602111] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  119.659637] hub 1-0:1.0: over-current condition on port 1
    [  119.702056] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  119.862091] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  119.862091] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  119.862121] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  119.919647] hub 1-0:1.0: over-current condition on port 1
    [  119.962097] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.122100] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.122131] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.122131] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  120.179656] hub 1-0:1.0: over-current condition on port 1
    [  120.222106] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  120.382080] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.382080] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.382110] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  120.439727] hub 1-0:1.0: over-current condition on port 1
    [  120.482086] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.642089] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.642120] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.642120] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  120.699645] hub 1-0:1.0: over-current condition on port 1
    [  120.742095] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.902069] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.902099] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.902130] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  120.959655] hub 1-0:1.0: over-current condition on port 1
    [  121.002075] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.162078] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.162109] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.162109] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.219665] hub 1-0:1.0: over-current condition on port 1
    [  121.262084] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.422088] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.422119] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.422119] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.479644] hub 1-0:1.0: over-current condition on port 1
    [  121.522094] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.682098] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.682128] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.682128] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.739654] hub 1-0:1.0: over-current condition on port 1
    [  121.782104] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.942077] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.942108] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.942108] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.999664] hub 1-0:1.0: over-current condition on port 1
    [  122.042083] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.202087] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.202117] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.202117] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.239685] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  122.259674] hub 1-0:1.0: over-current condition on port 1
    [  122.302124] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.462097] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.462097] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.462127] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.519653] hub 1-0:1.0: over-current condition on port 1
    [  122.562103] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.722076] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.722106] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.722137] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.779663] hub 1-0:1.0: over-current condition on port 1
    [  122.822082] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.982086] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.982086] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.982116] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.039642] hub 1-0:1.0: over-current condition on port 1
    [  123.082092] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.242095] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.242126] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.242156] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.299652] hub 1-0:1.0: over-current condition on port 1
    [  123.342102] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.502105] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.502105] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.502136] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.559661] hub 1-0:1.0: over-current condition on port 1
    [  123.602111] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.762054] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.762084] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.762115] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.819641] hub 1-0:1.0: over-current condition on port 1
    [  123.862060] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.022094] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.022094] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.022125] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.079620] hub 1-0:1.0: over-current condition on port 1
    [  124.122100] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  124.282073] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.282104] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.282135] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.339630] hub 1-0:1.0: over-current condition on port 1
    [  124.382080] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.542083] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.542083] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.542114] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.599639] hub 1-0:1.0: over-current condition on port 1
    [  124.642089] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.802062] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.802093] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.802124] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.859649] hub 1-0:1.0: over-current condition on port 1
    [  124.902069] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.062103] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.062103] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.062133] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.119628] hub 1-0:1.0: over-current condition on port 1
    [  125.162078] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.322082] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.322082] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.322113] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.379638] hub 1-0:1.0: over-current condition on port 1
    [  125.422088] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.582122] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.582153] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.582183] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.639648] hub 1-0:1.0: over-current condition on port 1
    [  125.682098] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.842102] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.842102] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.842132] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.899658] hub 1-0:1.0: over-current condition on port 1
    [  125.942108] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.102081] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.102081] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.102111] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.159667] hub 1-0:1.0: over-current condition on port 1
    [  126.202087] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  126.362091] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.362121] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.362152] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.419647] hub 1-0:1.0: over-current condition on port 1
    [  126.462097] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.622100] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.622100] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.622131] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.679656] hub 1-0:1.0: over-current condition on port 1
    [  126.722106] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.882080] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.882110] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.882110] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.939636] hub 1-0:1.0: over-current condition on port 1
    [  126.982086] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.142089] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.142089] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.142120] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.199645] hub 1-0:1.0: over-current condition on port 1
    [  127.242065] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.402160] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.402191] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.402191] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.460174] hub 1-0:1.0: over-current condition on port 1
    [  127.502166] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.662078] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.662109] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.662109] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.719665] hub 1-0:1.0: over-current condition on port 1
    [  127.762084] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.922088] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.922119] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.922119] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.979644] hub 1-0:1.0: over-current condition on port 1
    [  128.022094] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.182067] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.182098] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.182098] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  128.239654] hub 1-0:1.0: over-current condition on port 1
    [  128.282073] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.442077] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.442077] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.442108] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.499633] hub 1-0:1.0: over-current condition on port 1
    [  128.542083] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.702087] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.702087] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.702117] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.759643] hub 1-0:1.0: over-current condition on port 1
    [  128.802093] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.962097] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.962097] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.962127] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.019622] hub 1-0:1.0: over-current condition on port 1
    [  129.062103] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.222076] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.222106] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.222106] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.279663] hub 1-0:1.0: over-current condition on port 1
    [  129.322082] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.482055] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.482086] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.482116] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.539642] hub 1-0:1.0: over-current condition on port 1
    [  129.582061] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.742095] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.742095] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.742126] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.799652] hub 1-0:1.0: over-current condition on port 1
    [  129.842102] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.002075] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.002105] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.002105] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.059631] hub 1-0:1.0: over-current condition on port 1
    [  130.102081] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.239624] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  130.262084] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.262115] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.262115] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.319641] hub 1-0:1.0: over-current condition on port 1
    [  130.362091] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.522125] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.522125] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.522155] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.579681] hub 1-0:1.0: over-current condition on port 1
    [  130.622100] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.782073] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.782104] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.782135] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.840209] hub 1-0:1.0: over-current condition on port 1
    [  130.882110] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.042083] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.042114] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.042114] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.099670] hub 1-0:1.0: over-current condition on port 1
    [  131.142089] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.302093] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.302124] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.302124] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.359649] hub 1-0:1.0: over-current condition on port 1
    [  131.402099] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.562103] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.562103] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.562133] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.619628] hub 1-0:1.0: over-current condition on port 1
    [  131.662109] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.822082] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.822113] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.822143] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    
     is power-on without usb stick, log2
    6170.debug-vbuserror2.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #3 Fri Nov 1 11:15:12 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000274] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067657] pid_max: default: 32768 minimum: 301
    [    0.067932] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068725] CPU: Testing write buffer coherency: ok
    [    0.094299] omap_hwmod: pruss: failed to hardreset
    [    0.096252] print_constraints: dummy: 
    [    0.096954] NET: Registered protocol family 16
    [    0.101287] OMAP GPIO hardware version 0.1
    [    0.106933] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.110961]  omap_i2c.1: alias fck already exists
    [    0.112731]  omap2_mcspi.1: alias fck already exists
    [    0.113220]  omap2_mcspi.2: alias fck already exists
    [    0.115203]  edma.0: alias fck already exists
    [    0.115264]  edma.0: alias fck already exists
    [    0.115295]  edma.0: alias fck already exists
    [    0.176544] bio: create slab <bio-0> at 0
    [    0.181213] SCSI subsystem initialized
    [    0.184509] usbcore: registered new interface driver usbfs
    [    0.185150] usbcore: registered new interface driver hub
    [    0.185577] usbcore: registered new device driver usb
    [    0.186126] registerd cppi-dma Intr @ IRQ 17
    [    0.186157] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186187] Cppi41 Init Done
    [    0.186218] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [    0.186828] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [    0.189331] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192260] tps65910 1-002d: could not be detected
    [    0.195159] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197418] Switching to clocksource gp timer
    [    0.232604] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.232910] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.233551] MUSB0 controller's USBSS revision = 4ea20800
    [    0.233581] TxFifo Empty intr disabled
    [    0.234191] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234252] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234252] musb-hdrc: setup fifo_mode 4
    [    0.234313] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234344] musb-hdrc.0: bulk split disabled
    [    0.234375] musb-hdrc.0: bulk combine disabled
    [    0.235534] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [    0.235809] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.236419] MUSB1 controller's USBSS revision = 4ea20800
    [    0.236450] TxFifo Empty intr disabled
    [    0.237060] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.237091] musb-hdrc: MHDRC RTL version 2.0 
    [    0.237121] musb-hdrc: setup fifo_mode 4
    [    0.237152] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.237182] musb-hdrc.1: bulk split disabled
    [    0.237213] musb-hdrc.1: bulk combine disabled
    [    0.237365] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.237609] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [    0.237823] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.237884] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.237915] usb usb1: Product: MUSB HDRC host driver
    [    0.237915] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.237945] usb usb1: SerialNumber: musb-hdrc.1
    [    0.239746] hub 1-0:1.0: USB hub found
    [    0.239807] hub 1-0:1.0: 1 port detected
    [    0.240966] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.241729] NET: Registered protocol family 2
    [    0.242034] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.242584] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.242797] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.242919] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.242919] TCP reno registered
    [    0.242950] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243011] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243438] NET: Registered protocol family 1
    [    0.243927] RPC: Registered named UNIX socket transport module.
    [    0.243957] RPC: Registered udp transport module.
    [    0.243957] RPC: Registered tcp transport module.
    [    0.243988] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.244415] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.255187] VFS: Disk quotas dquot_6.5.2
    [    0.255310] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.256347] msgmni has been set to 240
    [    0.262603] alg: No test for stdrng (krng)
    [    0.263732] io scheduler noop registered
    [    0.263732] io scheduler deadline registered
    [    0.263885] io scheduler cfq registered (default)
    [    0.265960] Could not set LED4 to fully on
    [    0.269042] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.841033] ti81xx_interrupt 1152: VBUS error workaround (delay coming)
    [    0.848052] console [ttyO0] enabled
    [    0.852813] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.861145] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.869384] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.877593] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.885864] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.895050] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.922729] brd: module loaded
    [    0.936950] loop: module loaded
    [    0.940704] i2c-core: driver [tsl2550] using legacy suspend method
    [    0.947174] i2c-core: driver [tsl2550] using legacy resume method
    [    0.953704] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.018005] No daughter card found
    [    1.021636] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.028961] The board is a AM335x Beaglebone Black.
    [    1.037048] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.045410] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.054962] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.064361] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.073638] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.082977] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.092163] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.101470] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.109436]  omap_hsmmc.0: alias fck already exists
    [    1.115295]  omap_hsmmc.1: alias fck already exists
    [    1.121093]  omap_i2c.3: alias fck already exists
    [    1.126708] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.139495] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.147033] omap2-nand driver initializing
    [    1.151763] OneNAND driver initializing
    [    1.158569] CAN device driver interface
    [    1.162597] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.218109] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.224578] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.232299] davinci_mdio.0: probed
    [    1.235870] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.245208] usbcore: registered new interface driver zd1201
    [    1.251464] usbcore: registered new interface driver cdc_ether
    [    1.257934] usbcore: registered new interface driver cdc_eem
    [    1.264251] usbcore: registered new interface driver dm9601
    [    1.270172] cdc_ncm: 04-Aug-2011
    [    1.273925] usbcore: registered new interface driver cdc_ncm
    [    1.279907] Initializing USB Mass Storage driver...
    [    1.285461] usbcore: registered new interface driver usb-storage
    [    1.291809] USB Mass Storage support registered.
    [    1.297637] mousedev: PS/2 mouse device common for all mice
    [    1.305664] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.312805] am33xx-rtc: already running
    [    1.317138] i2c /dev entries driver
    [    1.322174] Linux video capture interface: v2.00
    [    1.327697] usbcore: registered new interface driver uvcvideo
    [    1.333770] USB Video Class driver (1.1.1)
    [    1.342132] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.425476] cpuidle: using governor ladder
    [    1.430511] cpuidle: using governor menu
    [    1.438903] omap4_aes_mod_init: loading AM33X AES driver
    [    1.444641] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.451599] omap4_aes_probe: probe() done
    [    1.456115] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.462341] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.482177] omap4_sham_probe: probe() done
    [    1.489746] usbcore: registered new interface driver usbhid
    [    1.495635] usbhid: USB HID core driver
    [    1.500762] usbcore: registered new interface driver snd-usb-audio
    [    1.509338] ALSA device list:
    [    1.512481]   No soundcards found.
    [    1.516052] oprofile: hardware counters not available
    [    1.521423] oprofile: using timer interrupt.
    [    1.525939] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.532745] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.538513] TCP cubic registered
    [    1.541931] NET: Registered protocol family 17
    [    1.546630] can: controller area network core (rev 20090105 abi 8)
    [    1.553253] NET: Registered protocol family 29
    [    1.557952] can: raw protocol (rev 20090105)
    [    1.562469] can: broadcast manager protocol (rev 20090105 t)
    [    1.568511] Registering the dns_resolver key type
    [    1.573516] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.581634] ThumbEE CPU extension supported.
    [    1.586212] mux: Failed to setup hwmod io irq -22
    [    1.591979] Power Management for AM33XX family
    [    1.596893] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.603668] Copied the M3 firmware to UMEM
    [    1.608062] Cortex M3 Firmware Version = 0x181
    [    1.613433] sr_init: platform driver register failed
    [    1.622863] clock: disabling unused clocks to save power
    [    1.642486] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.653198] mmc0: new high speed SDHC card at address f3ff
    [    1.659881] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.666442]  mmcblk0: p1 p2
    [    1.671875] Detected MACID=bc:6a:29:93:e5:60
    [    1.677703] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.684356] omap_rtc am33xx-rtc: setting system clock to 2013-06-25 23:12:36 UTC (1372201956)
    [    1.698272] kjournald starting.  Commit interval 5 seconds
    [    1.704132] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    1.711456] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    1.719238] Freeing init memory: 236K
    [    5.580932] EXT3-fs (mmcblk0p2): using internal journal
    [    6.360412] net eth0: CPSW phy found : id is : 0x7c0f1
    [   16.066986] Disabling lock debugging due to kernel taint
    [   25.018859]  gadget: Mass Storage Function, version: 2009/09/11
    [   25.025207]  gadget: Number of LUNs=1
    [   25.029083]  lun0: LUN: removable file: /dev/mmcblk0p1
    [   25.034576]  gadget: Mass Storage Gadget, version: 2009/09/11
    [   25.040649]  gadget: userspace failed to provide iSerialNumber
    [   25.046813]  gadget: g_mass_storage ready
    [   25.051086] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    [   25.056793] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
    [   25.064758] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    [   25.071929] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [   25.079559] usb usb2: Product: MUSB HDRC host driver
    [   25.084808] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
    [   25.090423] usb usb2: SerialNumber: musb-hdrc.0
    [   25.095947] hub 2-0:1.0: USB hub found
    [   25.099945] hub 2-0:1.0: 1 port detected
    [   96.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   98.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  100.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  102.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  104.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  106.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  108.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  110.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  112.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  114.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  116.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  118.239562] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  120.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  120.512603] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.512634] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.512664] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  120.612609] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.665008] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.665039] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.665069] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  120.765014] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.817443] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.817474] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.817474] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  120.917449] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  120.969879] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  120.969909] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  120.969909] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  121.069885] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.231994] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.232025] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.232055] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.289581] hub 1-0:1.0: over-current condition on port 1
    [  121.332000] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.492004] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.492004] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.492034] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.549560] hub 1-0:1.0: over-current condition on port 1
    [  121.592010] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.751983] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.752014] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.752044] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.809539] hub 1-0:1.0: over-current condition on port 1
    [  121.851989] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.011993] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.012023] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.012023] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.069549] hub 1-0:1.0: over-current condition on port 1
    [  122.111999] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  122.272003] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.272003] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.272033] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.329528] hub 1-0:1.0: over-current condition on port 1
    [  122.371978] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.532073] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.532104] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.532104] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.589569] hub 1-0:1.0: over-current condition on port 1
    [  122.632049] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.791992] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.792022] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.792022] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  122.849548] hub 1-0:1.0: over-current condition on port 1
    [  122.891998] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.052001] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.052001] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.052032] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.109558] hub 1-0:1.0: over-current condition on port 1
    [  123.152008] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.312011] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.312011] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.312042] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.369537] hub 1-0:1.0: over-current condition on port 1
    [  123.411987] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.571990] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.572021] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.572021] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.629577] hub 1-0:1.0: over-current condition on port 1
    [  123.671997] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.831970] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.832000] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.832031] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  123.889556] hub 1-0:1.0: over-current condition on port 1
    [  123.931976] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.091979] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.092010] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.092041] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.149536] hub 1-0:1.0: over-current condition on port 1
    [  124.191986] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  124.351989] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.352020] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.352020] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.409545] hub 1-0:1.0: over-current condition on port 1
    [  124.451995] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.611968] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.611999] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.612030] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.669555] hub 1-0:1.0: over-current condition on port 1
    [  124.711975] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.872009] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.872009] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.872039] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  124.929565] hub 1-0:1.0: over-current condition on port 1
    [  124.972015] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.132019] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.132019] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.132049] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.189544] hub 1-0:1.0: over-current condition on port 1
    [  125.232025] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.391998] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.391998] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.392028] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.449554] hub 1-0:1.0: over-current condition on port 1
    [  125.492004] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.652008] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.652008] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.652038] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.709564] hub 1-0:1.0: over-current condition on port 1
    [  125.752014] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.911987] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.912017] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.912017] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  125.969543] hub 1-0:1.0: over-current condition on port 1
    [  126.011993] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.171997] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.172027] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.172027] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.229583] hub 1-0:1.0: over-current condition on port 1
    [  126.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  126.272003] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.432006] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.432006] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.432037] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.489562] hub 1-0:1.0: over-current condition on port 1
    [  126.531982] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.691986] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.692016] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.692047] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  126.749542] hub 1-0:1.0: over-current condition on port 1
    [  126.791992] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.951995] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.952026] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.952026] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.009552] hub 1-0:1.0: over-current condition on port 1
    [  127.052001] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.212005] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.212036] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.212036] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.269561] hub 1-0:1.0: over-current condition on port 1
    [  127.312011] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.473114] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.473144] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.473175] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.529602] hub 1-0:1.0: over-current condition on port 1
    [  127.573120] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.731994] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.732025] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.732025] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  127.789550] hub 1-0:1.0: over-current condition on port 1
    [  127.832000] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.992004] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.992034] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.992034] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.049591] hub 1-0:1.0: over-current condition on port 1
    [  128.092010] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  128.252014] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.252044] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.252044] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.309539] hub 1-0:1.0: over-current condition on port 1
    [  128.352020] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.511993] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.512023] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.512054] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.569549] hub 1-0:1.0: over-current condition on port 1
    [  128.611999] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.771972] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.772003] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.772033] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  128.829559] hub 1-0:1.0: over-current condition on port 1
    [  128.871978] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.031982] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.032012] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.032043] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.089538] hub 1-0:1.0: over-current condition on port 1
    [  129.132019] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.291992] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.292022] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.292053] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.349548] hub 1-0:1.0: over-current condition on port 1
    [  129.391998] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.551971] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.552001] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.552032] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.609527] hub 1-0:1.0: over-current condition on port 1
    [  129.651977] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.812011] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.812011] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.812042] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  129.869537] hub 1-0:1.0: over-current condition on port 1
    [  129.912017] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.071990] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.071990] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.072021] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.129547] hub 1-0:1.0: over-current condition on port 1
    [  130.171997] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  130.332000] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.332031] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.332031] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.389556] hub 1-0:1.0: over-current condition on port 1
    [  130.432006] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.592010] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.592010] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.592041] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.649536] hub 1-0:1.0: over-current condition on port 1
    [  130.692016] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.851989] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.852020] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.852020] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  130.909576] hub 1-0:1.0: over-current condition on port 1
    [  130.951995] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.111999] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.112030] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.112030] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.169586] hub 1-0:1.0: over-current condition on port 1
    [  131.212005] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.372009] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.372009] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.372039] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.429534] hub 1-0:1.0: over-current condition on port 1
    [  131.472015] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.631988] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.632019] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.632019] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.689575] hub 1-0:1.0: over-current condition on port 1
    [  131.731994] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.891998] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.891998] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.892028] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  131.949554] hub 1-0:1.0: over-current condition on port 1
    [  131.992004] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.152008] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.152038] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.152069] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  132.209564] hub 1-0:1.0: over-current condition on port 1
    [  132.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  132.252014] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.412536] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.412567] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.412567] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  132.469604] hub 1-0:1.0: over-current condition on port 1
    [  132.512542] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.671997] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.672027] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.672027] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  132.729553] hub 1-0:1.0: over-current condition on port 1
    [  132.772003] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.932006] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.932006] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.932037] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  132.989532] hub 1-0:1.0: over-current condition on port 1
    [  133.031982] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.192016] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.192047] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.192047] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  133.249572] hub 1-0:1.0: over-current condition on port 1
    [  133.292022] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.451995] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.451995] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.452026] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  133.509552] hub 1-0:1.0: over-current condition on port 1
    [  133.552001] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.711975] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.712005] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.712005] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  133.769531] hub 1-0:1.0: over-current condition on port 1
    [  133.811981] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.971984] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.972015] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.972045] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  134.029541] hub 1-0:1.0: over-current condition on port 1
    [  134.071990] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.231994] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.231994] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.232025] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  134.239501] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  134.289550] hub 1-0:1.0: over-current condition on port 1
    [  134.332000] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.492004] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.492004] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.492034] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  134.549530] hub 1-0:1.0: over-current condition on port 1
    [  134.592010] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.751983] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.752014] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.752014] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  134.809570] hub 1-0:1.0: over-current condition on port 1
    [  134.851989] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.011993] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.012023] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.012023] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  135.069549] hub 1-0:1.0: over-current condition on port 1
    [  135.111999] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.272003] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.272033] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.272064] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  135.329559] hub 1-0:1.0: over-current condition on port 1
    [  135.372009] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.532012] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.532012] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.532043] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  135.589569] hub 1-0:1.0: over-current condition on port 1
    [  135.632019] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.791992] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.792022] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.792022] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  135.849548] hub 1-0:1.0: over-current condition on port 1
    [  135.891998] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.052001] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.052001] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.052032] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  136.109558] hub 1-0:1.0: over-current condition on port 1
    [  136.152008] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  136.312011] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.312011] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.312042] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  136.369537] hub 1-0:1.0: over-current condition on port 1
    [  136.411987] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.571990] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.571990] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.572021] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  136.629547] hub 1-0:1.0: over-current condition on port 1
    [  136.671997] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.831970] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.832000] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.832031] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  136.889556] hub 1-0:1.0: over-current condition on port 1
    [  136.931976] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.092010] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.092010] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.092041] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  137.149566] hub 1-0:1.0: over-current condition on port 1
    [  137.191986] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.351989] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.352020] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.352050] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  137.409545] hub 1-0:1.0: over-current condition on port 1
    [  137.452026] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.612030] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.612030] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.612060] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  137.669555] hub 1-0:1.0: over-current condition on port 1
    [  137.712005] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.871978] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.872009] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.872009] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  137.929534] hub 1-0:1.0: over-current condition on port 1
    [  137.971984] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.132049] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.132049] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.132080] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  138.189575] hub 1-0:1.0: over-current condition on port 1
    [  138.232025] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  138.391998] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.391998] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.392028] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  138.449554] hub 1-0:1.0: over-current condition on port 1
    [  138.491973] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.652008] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.652008] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.652038] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  138.709564] hub 1-0:1.0: over-current condition on port 1
    [  138.752014] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.911987] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.912017] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.912017] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  138.969543] hub 1-0:1.0: over-current condition on port 1
    [  139.011993] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.171997] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.171997] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.172027] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  139.229583] hub 1-0:1.0: over-current condition on port 1
    [  139.272003] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.431976] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.432006] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.432037] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  139.489532] hub 1-0:1.0: over-current condition on port 1
    [  139.531982] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.691986] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.692016] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.692047] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  139.749572] hub 1-0:1.0: over-current condition on port 1
    [  139.791992] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.951995] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.951995] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.952026] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  140.009552] hub 1-0:1.0: over-current condition on port 1
    [  140.051971] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.212005] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.212005] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.212036] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  140.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  140.269531] hub 1-0:1.0: over-current condition on port 1
    [  140.312011] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.471984] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.472015] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.472015] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  140.529571] hub 1-0:1.0: over-current condition on port 1
    [  140.571990] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.731994] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.731994] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.732025] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  140.789550] hub 1-0:1.0: over-current condition on port 1
    [  140.832000] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.992004] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.992004] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.992034] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  141.049652] hub 1-0:1.0: over-current condition on port 1
    [  141.092010] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.252014] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.252014] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.252044] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  141.309539] hub 1-0:1.0: over-current condition on port 1
    [  141.352020] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.511993] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.512023] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.512054] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  141.569549] hub 1-0:1.0: over-current condition on port 1
    [  141.611999] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.771972] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.772003] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.772033] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  141.829559] hub 1-0:1.0: over-current condition on port 1
    [  141.871978] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.031982] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.032012] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.032043] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  142.089569] hub 1-0:1.0: over-current condition on port 1
    [  142.132019] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  142.292022] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.292053] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.292053] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  142.349578] hub 1-0:1.0: over-current condition on port 1
    [  142.392028] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.552062] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.552062] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.552093] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  142.609588] hub 1-0:1.0: over-current condition on port 1
    [  142.652038] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.812011] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.812011] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.812042] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  142.869567] hub 1-0:1.0: over-current condition on port 1
    [  142.912017] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  143.071990] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  143.072021] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  143.072052] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  143.129547] hub 1-0:1.0: over-current condition on port 1
    [  143.172027] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  143.332000] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  143.332031] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  143.332031] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  143.389556] hub 1-0:1.0: over-current condition on port 1
    [  143.432006] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  143.592010] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  143.592041] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  143.592041] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  143.649566] hub 1-0:1.0: over-current condition on port 1
    [  143.692016] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  143.851989] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  143.851989] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  143.852020] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  143.909545] hub 1-0:1.0: over-current condition on port 1
    [  143.951995] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  144.111999] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  144.111999] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  144.112030] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  144.169616] hub 1-0:1.0: over-current condition on port 1
    [  144.212005] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  144.239501] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  144.371978] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  144.372009] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  144.372039] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  144.429565] hub 1-0:1.0: over-current condition on port 1
    [  144.471984] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  144.631988] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  144.632019] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  144.632019] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  144.689544] hub 1-0:1.0: over-current condition on port 1
    [  144.731994] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  144.891967] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  144.891998] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  144.892028] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  144.949554] hub 1-0:1.0: over-current condition on port 1
    [  144.991973] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  145.152008] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  145.152008] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  145.152038] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  145.209564] hub 1-0:1.0: over-current condition on port 1
    [  145.252014] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  145.412475] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  145.412506] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  145.412506] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  145.469573] hub 1-0:1.0: over-current condition on port 1
    [  145.512481] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  145.671997] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  145.671997] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  145.672027] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  145.729553] hub 1-0:1.0: over-current condition on port 1
    [  145.772003] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  145.931976] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  145.932006] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  145.932037] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  145.989562] hub 1-0:1.0: over-current condition on port 1
    [  146.031982] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  146.191986] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  146.191986] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  146.192016] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  146.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  146.249694] hub 1-0:1.0: over-current condition on port 1
    [  146.291992] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  146.451995] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  146.451995] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  146.452026] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  146.509552] hub 1-0:1.0: over-current condition on port 1
    [  146.552001] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  146.711975] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  146.712005] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  146.712005] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  146.769561] hub 1-0:1.0: over-current condition on port 1
    [  146.811981] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  146.971984] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  146.972015] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  146.972045] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  147.029541] hub 1-0:1.0: over-current condition on port 1
    [  147.071990] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  147.231994] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  147.231994] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  147.232025] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  147.289550] hub 1-0:1.0: over-current condition on port 1
    [  147.332000] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  147.492034] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  147.492065] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  147.492095] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  147.549591] hub 1-0:1.0: over-current condition on port 1
    [  147.592041] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  147.752014] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  147.752044] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  147.752044] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  147.810089] hub 1-0:1.0: over-current condition on port 1
    [  147.852020] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  148.011993] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  148.012023] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  148.012054] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  148.069580] hub 1-0:1.0: over-current condition on port 1
    [  148.111999] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  148.239532] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  148.272003] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  148.272033] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  148.272033] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  148.329559] hub 1-0:1.0: over-current condition on port 1
    [  148.372009] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  148.532012] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  148.532012] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  148.532043] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  148.589569] hub 1-0:1.0: over-current condition on port 1
    [  148.632019] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  148.791992] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  148.792022] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  148.792022] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  148.849548] hub 1-0:1.0: over-current condition on port 1
    [  148.891998] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.052001] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  149.052001] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  149.052032] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  149.109558] hub 1-0:1.0: over-current condition on port 1
    [  149.152008] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.312011] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  149.312042] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  149.312042] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  149.369537] hub 1-0:1.0: over-current condition on port 1
    [  149.412017] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.571990] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  149.572021] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  149.572021] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  149.629577] hub 1-0:1.0: over-current condition on port 1
    [  149.671997] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  149.832000] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  149.832031] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  149.832031] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  149.891204] hub 1-0:1.0: over-current condition on port 1
    
     is power-on with usb stick plugged-in. here 8816.console-msg.txt is console message for your reference.

    BTW, I checked VDDA1P8V_USB0/1, VDDA3P3V_USB0/1 all are in goog condition.

  • Yonghui,

    Good we made the message flood disappeared, now we will focus on fixing the real hw problem - over-current.

    Now we have to modify the hw again, is it possible for you to add 150uF cap between U2 and USB receptacle? Please keep U2 in there, the key is to move C21 from left side of U2 to its right side.

    We can remove U2 later to save some BOM cost if you want, but that requires sw change too. We first want to fix the over-current issue right now.

    After added the 150uF cap, if the VBUSERROR still happens once or usb stick still cannot be enumerated, please capture the same log again to check if over-current still happens. If so please try different usb sticks from other vendors, also please try different usb devices, like mouse, keyboard, self-powered hubs.

  • It's really a big improvement, thank you Liu Bin!

    I'll do the test you suggested soon, but why over-current occurs? This is detected by USB PHY or U2?

    Actually when I plugged out usb stick, this over-current message keeps as plugged in, I can not understand this case.

  • Yonghui,

    The 'over-current' here is not an accurate term, I think, but it is what the driver calls it. It is detected by the MUSB controller, not U2. When a USB device is plugged in, the in-rush current could cause VBUS drop below the valid threshold (4.4V) from 5V, then MUSB generates VBUSERROR interrupt, and the driver tries to recover it.

    You see the over-current message keeps showing up, that is a bug in the driver recover routine, that the recover retry counter never got reset once over-current happened. Since the VBUSERROR issue should be fixed from the hw perspective, the kernel community never tried to get this sw bug fixed.

    To ensure the in-rush current does not cause the issue, the USB Specs require the usb host should have minimum 120uF cap on VBUS. That is why I wanted you to add a 150uF cap, but it should be on the right side of U2.

    And the USB Specs also require the device should have maximum 10uF cap on its VBUS. So I wanted you to try other USB devices. If after added the cap and only this usb stick still shows VBUSERROR, most likely this stick is out of specs. If after the cap, other devices also show the error, then the board still has something wrong, which we have to find out.

  • Liu Bin,

    I've added 200uF cap on VBUS(right of U2), and try another usb stick, nothing different.

    And after I plugged in usb stick, nothing happen, only after I execute "echo 'F'..." command, over-current messages then appear.

    Is there any other possible issue?

  • Yonghui,

    Please get the log of 'cat /proc/driver/musb_hdrc.1' before and after plugged in the usb stick.

    Have you tried plugging in different usb devices?

  • Yes, I've tried usb mouse and other type usb stick (sandisk cruzer 4GB, sandisk U3 512MB, TI udisk 512MB), same phenomenon.

    Test results are list below:

    log4:

    3326.debug-vbuserror4.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #3 Fri Nov 1 11:15:12 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000305] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067657] pid_max: default: 32768 minimum: 301
    [    0.067901] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068725] CPU: Testing write buffer coherency: ok
    [    0.094268] omap_hwmod: pruss: failed to hardreset
    [    0.096221] print_constraints: dummy: 
    [    0.096923] NET: Registered protocol family 16
    [    0.101287] OMAP GPIO hardware version 0.1
    [    0.106933] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.111022]  omap_i2c.1: alias fck already exists
    [    0.112792]  omap2_mcspi.1: alias fck already exists
    [    0.113281]  omap2_mcspi.2: alias fck already exists
    [    0.115325]  edma.0: alias fck already exists
    [    0.115386]  edma.0: alias fck already exists
    [    0.115417]  edma.0: alias fck already exists
    [    0.176788] bio: create slab <bio-0> at 0
    [    0.181396] SCSI subsystem initialized
    [    0.184692] usbcore: registered new interface driver usbfs
    [    0.185363] usbcore: registered new interface driver hub
    [    0.185791] usbcore: registered new device driver usb
    [    0.186340] registerd cppi-dma Intr @ IRQ 17
    [    0.186370] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186370] Cppi41 Init Done
    [    0.186431] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [    0.187011] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [    0.189514] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192474] tps65910 1-002d: could not be detected
    [    0.195343] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197601] Switching to clocksource gp timer
    [    0.232910] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.233184] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.233825] MUSB0 controller's USBSS revision = 4ea20800
    [    0.233886] TxFifo Empty intr disabled
    [    0.234497] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234527] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234558] musb-hdrc: setup fifo_mode 4
    [    0.234619] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234649] musb-hdrc.0: bulk split disabled
    [    0.234649] musb-hdrc.0: bulk combine disabled
    [    0.235809] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [    0.236083] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.236724] MUSB1 controller's USBSS revision = 4ea20800
    [    0.236755] TxFifo Empty intr disabled
    [    0.237365] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.237396] musb-hdrc: MHDRC RTL version 2.0 
    [    0.237426] musb-hdrc: setup fifo_mode 4
    [    0.237487] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.237518] musb-hdrc.1: bulk split disabled
    [    0.237518] musb-hdrc.1: bulk combine disabled
    [    0.237792] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.237945] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [    0.238159] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.238189] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.238220] usb usb1: Product: MUSB HDRC host driver
    [    0.238250] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.238281] usb usb1: SerialNumber: musb-hdrc.1
    [    0.240020] hub 1-0:1.0: USB hub found
    [    0.240081] hub 1-0:1.0: 1 port detected
    [    0.241241] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.242034] NET: Registered protocol family 2
    [    0.242340] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.242858] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.243072] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.243194] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.243225] TCP reno registered
    [    0.243255] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243286] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243713] NET: Registered protocol family 1
    [    0.244201] RPC: Registered named UNIX socket transport module.
    [    0.244201] RPC: Registered udp transport module.
    [    0.244232] RPC: Registered tcp transport module.
    [    0.244262] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.244689] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.255523] VFS: Disk quotas dquot_6.5.2
    [    0.255645] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.256652] msgmni has been set to 240
    [    0.262908] alg: No test for stdrng (krng)
    [    0.264038] io scheduler noop registered
    [    0.264068] io scheduler deadline registered
    [    0.264190] io scheduler cfq registered (default)
    [    0.266265] Could not set LED4 to fully on
    [    0.269409] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.841400] ti81xx_interrupt 1152: VBUS error workaround (delay coming)
    [    0.848388] console [ttyO0] enabled
    [    0.853149] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.861480] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.869720] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.877960] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.886260] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.895446] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.923126] brd: module loaded
    [    0.937347] loop: module loaded
    [    0.941070] i2c-core: driver [tsl2550] using legacy suspend method
    [    0.947570] i2c-core: driver [tsl2550] using legacy resume method
    [    0.954101] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.018188] No daughter card found
    [    1.021850] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.029174] The board is a AM335x Beaglebone Black.
    [    1.037261] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.045623] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.055175] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.064544] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.073852] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.083190] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.092376] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.101715] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.109680]  omap_hsmmc.0: alias fck already exists
    [    1.115509]  omap_hsmmc.1: alias fck already exists
    [    1.121368]  omap_i2c.3: alias fck already exists
    [    1.126953] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.139801] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.147338] omap2-nand driver initializing
    [    1.152069] OneNAND driver initializing
    [    1.158874] CAN device driver interface
    [    1.162902] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.218261] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.224761] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.232482] davinci_mdio.0: probed
    [    1.236083] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.245422] usbcore: registered new interface driver zd1201
    [    1.251708] usbcore: registered new interface driver cdc_ether
    [    1.258148] usbcore: registered new interface driver cdc_eem
    [    1.264495] usbcore: registered new interface driver dm9601
    [    1.270416] cdc_ncm: 04-Aug-2011
    [    1.274169] usbcore: registered new interface driver cdc_ncm
    [    1.280120] Initializing USB Mass Storage driver...
    [    1.285705] usbcore: registered new interface driver usb-storage
    [    1.292022] USB Mass Storage support registered.
    [    1.297851] mousedev: PS/2 mouse device common for all mice
    [    1.305908] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.313323] i2c /dev entries driver
    [    1.318389] Linux video capture interface: v2.00
    [    1.323913] usbcore: registered new interface driver uvcvideo
    [    1.329986] USB Video Class driver (1.1.1)
    [    1.338378] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.421691] cpuidle: using governor ladder
    [    1.426696] cpuidle: using governor menu
    [    1.435058] omap4_aes_mod_init: loading AM33X AES driver
    [    1.440856] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.447540] omap4_aes_probe: probe() done
    [    1.452331] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.458557] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.478363] omap4_sham_probe: probe() done
    [    1.485992] usbcore: registered new interface driver usbhid
    [    1.491912] usbhid: USB HID core driver
    [    1.496948] usbcore: registered new interface driver snd-usb-audio
    [    1.505645] ALSA device list:
    [    1.508789]   No soundcards found.
    [    1.512390] oprofile: hardware counters not available
    [    1.517700] oprofile: using timer interrupt.
    [    1.522247] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.529052] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.534790] TCP cubic registered
    [    1.538238] NET: Registered protocol family 17
    [    1.542938] can: controller area network core (rev 20090105 abi 8)
    [    1.549560] NET: Registered protocol family 29
    [    1.554229] can: raw protocol (rev 20090105)
    [    1.558746] can: broadcast manager protocol (rev 20090105 t)
    [    1.564788] Registering the dns_resolver key type
    [    1.569824] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.577911] ThumbEE CPU extension supported.
    [    1.582489] mux: Failed to setup hwmod io irq -22
    [    1.588287] Power Management for AM33XX family
    [    1.593200] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.599975] Copied the M3 firmware to UMEM
    [    1.604370] Cortex M3 Firmware Version = 0x181
    [    1.609741] sr_init: platform driver register failed
    [    1.619201] clock: disabling unused clocks to save power
    [    1.639129] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.649810] mmc0: new high speed SDHC card at address f3ff
    [    1.656585] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.663543]  mmcblk0: p1 p2
    [    1.667480] Detected MACID=bc:6a:29:93:e5:60
    [    1.673614] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.680908] omap_rtc am33xx-rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
    [    1.693267] EXT3-fs (mmcblk0p2): recovery required on readonly filesystem
    [    1.700500] EXT3-fs (mmcblk0p2): write access will be enabled during recovery
    [    5.343994] kjournald starting.  Commit interval 5 seconds
    [    5.349914] EXT3-fs (mmcblk0p2): recovery complete
    [    5.829833] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    5.837158] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    5.844970] Freeing init memory: 236K
    [    9.688995] EXT3-fs (mmcblk0p2): using internal journal
    [   10.453643] net eth0: CPSW phy found : id is : 0x7c0f1
    [   20.168975] Disabling lock debugging due to kernel taint
    [   26.791656]  gadget: Mass Storage Function, version: 2009/09/11
    [   26.797943]  gadget: Number of LUNs=1
    [   26.801849]  lun0: LUN: removable file: /dev/mmcblk0p1
    [   26.807312]  gadget: Mass Storage Gadget, version: 2009/09/11
    [   26.813385]  gadget: userspace failed to provide iSerialNumber
    [   26.819549]  gadget: g_mass_storage ready
    [   26.823822] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    [   26.829498] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
    [   26.837432] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    [   26.844635] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [   26.852233] usb usb2: Product: MUSB HDRC host driver
    [   26.857482] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
    [   26.863098] usb usb2: SerialNumber: musb-hdrc.0
    [   26.868621] hub 2-0:1.0: USB hub found
    [   26.872650] hub 2-0:1.0: 1 port detected
    [   82.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   84.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   86.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   88.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   90.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   92.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   94.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   96.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   98.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  100.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  102.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  104.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  106.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  108.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  110.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  112.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  114.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  116.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  118.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  120.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  121.112854] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.112884] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.112884] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [  121.212829] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.265258] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.265289] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.265289] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  121.365264] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.417694] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.417694] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.417724] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  121.517700] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.570129] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.570129] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.570159] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  121.670135] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  121.832183] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  121.832214] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  121.832214] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  121.889739] hub 1-0:1.0: over-current condition on port 1
    [  121.932189] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.092193] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.092193] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.092224] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  122.149749] hub 1-0:1.0: over-current condition on port 1
    [  122.192199] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  122.352203] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.352203] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.352233] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  122.409759] hub 1-0:1.0: over-current condition on port 1
    [  122.452178] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.612182] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.612213] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.612243] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  122.669769] hub 1-0:1.0: over-current condition on port 1
    [  122.712188] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  122.872192] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  122.872192] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  122.872222] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  122.929748] hub 1-0:1.0: over-current condition on port 1
    [  122.972167] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.132202] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.132202] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.132232] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  123.189758] hub 1-0:1.0: over-current condition on port 1
    [  123.232208] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.392211] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.392211] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.392242] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  123.450256] hub 1-0:1.0: over-current condition on port 1
    [  123.492218] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.652191] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.652221] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.652252] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  123.709747] hub 1-0:1.0: over-current condition on port 1
    [  123.752197] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  123.912200] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  123.912200] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  123.912231] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  123.969757] hub 1-0:1.0: over-current condition on port 1
    [  124.012207] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.172180] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.172210] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.172241] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  124.229766] hub 1-0:1.0: over-current condition on port 1
    [  124.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  124.272186] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.432189] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.432220] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.432220] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  124.489746] hub 1-0:1.0: over-current condition on port 1
    [  124.532196] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.692169] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.692199] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.692230] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  124.749725] hub 1-0:1.0: over-current condition on port 1
    [  124.792175] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  124.952178] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  124.952209] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  124.952239] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  125.009735] hub 1-0:1.0: over-current condition on port 1
    [  125.052185] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.212188] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.212219] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.212219] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  125.269775] hub 1-0:1.0: over-current condition on port 1
    [  125.312194] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.472229] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.472259] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.472290] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  125.529785] hub 1-0:1.0: over-current condition on port 1
    [  125.572235] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.732208] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.732208] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.732238] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  125.789733] hub 1-0:1.0: over-current condition on port 1
    [  125.832214] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  125.992218] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  125.992218] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  125.992248] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  126.049743] hub 1-0:1.0: over-current condition on port 1
    [  126.092193] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  126.252197] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.252227] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.252227] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  126.309753] hub 1-0:1.0: over-current condition on port 1
    [  126.352203] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.512176] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.512207] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.512207] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  126.569763] hub 1-0:1.0: over-current condition on port 1
    [  126.612182] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  126.772186] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  126.772216] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  126.772216] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  126.829772] hub 1-0:1.0: over-current condition on port 1
    [  126.872192] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.032196] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.032226] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.032226] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  127.089752] hub 1-0:1.0: over-current condition on port 1
    [  127.132202] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.292205] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.292205] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.292236] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  127.349761] hub 1-0:1.0: over-current condition on port 1
    [  127.392211] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.552154] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.552185] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.552215] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  127.609802] hub 1-0:1.0: over-current condition on port 1
    [  127.652160] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  127.812194] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  127.812194] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  127.812225] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  127.869750] hub 1-0:1.0: over-current condition on port 1
    [  127.912200] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.072174] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.072204] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.072204] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  128.129730] hub 1-0:1.0: over-current condition on port 1
    [  128.172180] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.239715] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  128.332183] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.332214] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.332214] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  128.389739] hub 1-0:1.0: over-current condition on port 1
    [  128.432189] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.592163] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.592193] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.592193] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  128.649749] hub 1-0:1.0: over-current condition on port 1
    [  128.692169] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  128.852203] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  128.852203] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  128.852233] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  128.909759] hub 1-0:1.0: over-current condition on port 1
    [  128.952209] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.112182] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.112213] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.112243] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  129.169769] hub 1-0:1.0: over-current condition on port 1
    [  129.212188] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.372192] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.372222] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.372222] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  129.429748] hub 1-0:1.0: over-current condition on port 1
    [  129.472198] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.632202] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.632202] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.632232] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  129.689727] hub 1-0:1.0: over-current condition on port 1
    [  129.732208] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  129.892242] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  129.892272] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  129.892303] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  129.949798] hub 1-0:1.0: over-current condition on port 1
    [  129.992218] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.152191] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.152191] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.152221] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  130.209747] hub 1-0:1.0: over-current condition on port 1
    [  130.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  130.252166] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.412231] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.412261] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.412261] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  130.469757] hub 1-0:1.0: over-current condition on port 1
    [  130.512207] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.672180] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.672210] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.672241] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  130.729736] hub 1-0:1.0: over-current condition on port 1
    [  130.772186] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  130.932189] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  130.932220] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  130.932220] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  130.989776] hub 1-0:1.0: over-current condition on port 1
    [  131.032196] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.192199] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.192199] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.192230] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  131.249755] hub 1-0:1.0: over-current condition on port 1
    [  131.292205] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.452209] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.452209] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.452239] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  131.509765] hub 1-0:1.0: over-current condition on port 1
    [  131.552215] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.712188] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.712219] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.712219] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  131.769744] hub 1-0:1.0: over-current condition on port 1
    [  131.812194] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  131.972198] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  131.972198] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  131.972229] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  132.029754] hub 1-0:1.0: over-current condition on port 1
    [  132.072204] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.232177] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.232208] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.232238] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  132.239715] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  132.289764] hub 1-0:1.0: over-current condition on port 1
    [  132.332183] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.492187] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.492218] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.492248] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  132.549743] hub 1-0:1.0: over-current condition on port 1
    [  132.592193] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  132.752197] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  132.752227] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  132.752227] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  132.809753] hub 1-0:1.0: over-current condition on port 1
    [  132.852203] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.012176] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.012207] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.012237] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  133.069763] hub 1-0:1.0: over-current condition on port 1
    [  133.112182] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.272186] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.272216] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.272247] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  133.329742] hub 1-0:1.0: over-current condition on port 1
    [  133.372192] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.532196] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.532196] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.532226] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  133.589721] hub 1-0:1.0: over-current condition on port 1
    [  133.632171] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  133.792205] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  133.792205] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  133.792236] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  133.849761] hub 1-0:1.0: over-current condition on port 1
    [  133.892211] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.052185] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.052185] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.052215] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  134.109741] hub 1-0:1.0: over-current condition on port 1
    [  134.152191] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  134.312194] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.312225] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.312225] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  134.369750] hub 1-0:1.0: over-current condition on port 1
    [  134.412200] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.572174] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.572204] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.572204] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  134.629760] hub 1-0:1.0: over-current condition on port 1
    [  134.672180] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  134.832183] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  134.832214] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  134.832214] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  134.889739] hub 1-0:1.0: over-current condition on port 1
    [  134.932189] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.092193] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.092224] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.092254] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  135.149780] hub 1-0:1.0: over-current condition on port 1
    [  135.192199] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.352203] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.352233] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.352264] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  135.409790] hub 1-0:1.0: over-current condition on port 1
    [  135.452209] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.612182] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.612182] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.612213] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  135.669738] hub 1-0:1.0: over-current condition on port 1
    [  135.712188] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  135.872161] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  135.872192] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  135.872222] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  135.929748] hub 1-0:1.0: over-current condition on port 1
    [  135.972167] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.132171] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.132202] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.132232] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  136.189788] hub 1-0:1.0: over-current condition on port 1
    [  136.232208] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  136.392181] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.392181] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.392211] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  136.450256] hub 1-0:1.0: over-current condition on port 1
    [  136.492187] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.652191] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.652191] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.652221] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  136.709747] hub 1-0:1.0: over-current condition on port 1
    [  136.752166] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  136.912200] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  136.912231] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  136.912231] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  136.969757] hub 1-0:1.0: over-current condition on port 1
    [  137.012207] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.172210] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.172210] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.172241] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  137.229736] hub 1-0:1.0: over-current condition on port 1
    [  137.272216] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.432189] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.432220] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.432220] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  137.489746] hub 1-0:1.0: over-current condition on port 1
    [  137.532196] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.692199] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.692199] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.692230] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  137.749755] hub 1-0:1.0: over-current condition on port 1
    [  137.792205] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  137.952178] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  137.952209] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  137.952239] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  138.009735] hub 1-0:1.0: over-current condition on port 1
    [  138.052185] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.212158] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.212188] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.212219] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  138.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  138.269744] hub 1-0:1.0: over-current condition on port 1
    [  138.312164] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.472198] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.472229] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.472229] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  138.529724] hub 1-0:1.0: over-current condition on port 1
    [  138.572204] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.732208] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.732208] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.732238] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  138.789764] hub 1-0:1.0: over-current condition on port 1
    [  138.832214] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  138.992187] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  138.992218] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  138.992248] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  139.049896] hub 1-0:1.0: over-current condition on port 1
    [  139.092193] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.252197] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.252227] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.252227] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  139.309753] hub 1-0:1.0: over-current condition on port 1
    [  139.352203] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.512176] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.512207] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.512207] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  139.569763] hub 1-0:1.0: over-current condition on port 1
    [  139.612182] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  139.772186] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  139.772186] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  139.772216] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  139.829772] hub 1-0:1.0: over-current condition on port 1
    [  139.872192] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.032196] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.032196] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.032226] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  140.089752] hub 1-0:1.0: over-current condition on port 1
    [  140.132202] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  140.292236] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.292236] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.292266] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  140.349731] hub 1-0:1.0: over-current condition on port 1
    [  140.392242] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.552215] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.552215] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.552246] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  140.609771] hub 1-0:1.0: over-current condition on port 1
    [  140.652191] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  140.812164] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  140.812194] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  140.812225] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  140.869750] hub 1-0:1.0: over-current condition on port 1
    [  140.912170] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.072204] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.072235] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.072235] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  141.129760] hub 1-0:1.0: over-current condition on port 1
    [  141.172210] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.332183] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.332214] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.332244] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  141.389770] hub 1-0:1.0: over-current condition on port 1
    [  141.432189] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.592193] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.592193] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.592224] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  141.649749] hub 1-0:1.0: over-current condition on port 1
    [  141.692199] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  141.852203] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  141.852203] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  141.852233] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  141.909759] hub 1-0:1.0: over-current condition on port 1
    [  141.952209] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.112182] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.112182] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.112213] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  142.169738] hub 1-0:1.0: over-current condition on port 1
    [  142.212188] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.239746] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [  142.372192] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.372192] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.372222] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  142.429748] hub 1-0:1.0: over-current condition on port 1
    [  142.472198] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.632171] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.632202] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.632232] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  142.689727] hub 1-0:1.0: over-current condition on port 1
    [  142.732208] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [  142.892181] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [  142.892211] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [  142.892242] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [  142.949737] hub 1-0:1.0: over-current condition on port 1
    [  142.992218] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    
     is boot without usb stick plugged in

    log5:

    8244.debug-vbuserror5.log
    [    0.000000] Linux version 3.2.0 (root@victor-virtual-machine) (gcc version 4.7.3 20130226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #3 Fri Nov 1 11:15:12 CST 2013
    [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
    [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    [    0.000000] Machine: am335xevm
    [    0.000000] Memory policy: ECC disabled, Data cache writeback
    [    0.000000] On node 0 totalpages: 32768
    [    0.000000] free_area_init_node: node 0, pgdat c0631828, node_mem_map c066a000
    [    0.000000]   Normal zone: 256 pages used for memmap
    [    0.000000]   Normal zone: 0 pages reserved
    [    0.000000]   Normal zone: 32512 pages, LIFO batch:7
    [    0.000000] AM335X ES1.0 (sgx neon )
    [    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
    [    0.000000] pcpu-alloc: [0] 0 
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
    [    0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext3 rootwait ip=none
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Memory: 128MB = 128MB total
    [    0.000000] Memory: 123340k/123340k available, 7732k reserved, 0K highmem
    [    0.000000] Virtual kernel memory layout:
    [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    [    0.000000]     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    [    0.000000]     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    [    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
    [    0.000000]       .text : 0xc0008000 - 0xc0596000   (5688 kB)
    [    0.000000]       .init : 0xc0596000 - 0xc05d1000   ( 236 kB)
    [    0.000000]       .data : 0xc05d2000 - 0xc063aeb0   ( 420 kB)
    [    0.000000]        .bss : 0xc063aed4 - 0xc0669c24   ( 188 kB)
    [    0.000000] NR_IRQS:396
    [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    [    0.000000] Total of 128 interrupts on 1 active controller
    [    0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
    [    0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
    [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
    [    0.000000] Console: colour dummy device 80x30
    [    0.000274] Calibrating delay loop... 298.59 BogoMIPS (lpj=1492992)
    [    0.067657] pid_max: default: 32768 minimum: 301
    [    0.067901] Security Framework initialized
    [    0.068084] Mount-cache hash table entries: 512
    [    0.068725] CPU: Testing write buffer coherency: ok
    [    0.094299] omap_hwmod: pruss: failed to hardreset
    [    0.096252] print_constraints: dummy: 
    [    0.096954] NET: Registered protocol family 16
    [    0.101287] OMAP GPIO hardware version 0.1
    [    0.106964] omap_mux_init: Add partition: #1: core, flags: 0
    [    0.110992]  omap_i2c.1: alias fck already exists
    [    0.112762]  omap2_mcspi.1: alias fck already exists
    [    0.113250]  omap2_mcspi.2: alias fck already exists
    [    0.115234]  edma.0: alias fck already exists
    [    0.115295]  edma.0: alias fck already exists
    [    0.115325]  edma.0: alias fck already exists
    [    0.176574] bio: create slab <bio-0> at 0
    [    0.181213] SCSI subsystem initialized
    [    0.184478] usbcore: registered new interface driver usbfs
    [    0.185150] usbcore: registered new interface driver hub
    [    0.185546] usbcore: registered new device driver usb
    [    0.186126] registerd cppi-dma Intr @ IRQ 17
    [    0.186157] Cppi41 Init Done Qmgr-base(c887a000) dma-base(c8878000)
    [    0.186157] Cppi41 Init Done
    [    0.186218] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
    [    0.186798] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
    [    0.189270] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
    [    0.192199] tps65910 1-002d: could not be detected
    [    0.195098] Advanced Linux Sound Architecture Driver Version 1.0.24.
    [    0.197357] Switching to clocksource gp timer
    [    0.232574] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
    [    0.232849] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    [    0.233489] MUSB0 controller's USBSS revision = 4ea20800
    [    0.233520] TxFifo Empty intr disabled
    [    0.234130] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.234191] musb-hdrc: MHDRC RTL version 2.0 
    [    0.234222] musb-hdrc: setup fifo_mode 4
    [    0.234252] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.234283] musb-hdrc.0: bulk split disabled
    [    0.234313] musb-hdrc.0: bulk combine disabled
    [    0.235473] musb-hdrc musb-hdrc.0: USB OTG mode controller at c883c000 using DMA, IRQ 18
    [    0.235748] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    [    0.236389] MUSB1 controller's USBSS revision = 4ea20800
    [    0.236419] TxFifo Empty intr disabled
    [    0.237030] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
    [    0.237060] musb-hdrc: MHDRC RTL version 2.0 
    [    0.237091] musb-hdrc: setup fifo_mode 4
    [    0.237121] musb-hdrc: 28/31 max ep, 16384/16384 memory
    [    0.237152] musb-hdrc.1: bulk split disabled
    [    0.237182] musb-hdrc.1: bulk combine disabled
    [    0.237335] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    [    0.237579] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
    [    0.237792] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    [    0.237823] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [    0.237854] usb usb1: Product: MUSB HDRC host driver
    [    0.237884] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
    [    0.237915] usb usb1: SerialNumber: musb-hdrc.1
    [    0.239685] hub 1-0:1.0: USB hub found
    [    0.239746] hub 1-0:1.0: 1 port detected
    [    0.240905] musb-hdrc musb-hdrc.1: USB Host mode controller at c883e800 using DMA, IRQ 19
    [    0.241638] NET: Registered protocol family 2
    [    0.241943] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.242492] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
    [    0.242675] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.242797] TCP: Hash tables configured (established 4096 bind 4096)
    [    0.242828] TCP reno registered
    [    0.242858] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.242919] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.243347] NET: Registered protocol family 1
    [    0.243804] RPC: Registered named UNIX socket transport module.
    [    0.243835] RPC: Registered udp transport module.
    [    0.243865] RPC: Registered tcp transport module.
    [    0.243896] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [    0.244323] NetWinder Floating Point Emulator V0.97 (double precision)
    [    0.255157] VFS: Disk quotas dquot_6.5.2
    [    0.255249] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    [    0.256286] msgmni has been set to 240
    [    0.262542] alg: No test for stdrng (krng)
    [    0.263641] io scheduler noop registered
    [    0.263671] io scheduler deadline registered
    [    0.263824] io scheduler cfq registered (default)
    [    0.265869] Could not set LED4 to fully on
    [    0.268981] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
    [    0.841674] ti81xx_interrupt 1152: VBUS error workaround (delay coming)
    [    0.848663] console [ttyO0] enabled
    [    0.853424] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    [    0.861755] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    [    0.869995] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    [    0.878234] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    [    0.886505] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    [    0.895660] omap4_rng omap4_rng: OMAP4 Random Number Generator ver. 2.00
    [    0.923309] brd: module loaded
    [    0.937530] loop: module loaded
    [    0.941253] i2c-core: driver [tsl2550] using legacy suspend method
    [    0.947753] i2c-core: driver [tsl2550] using legacy resume method
    [    0.954284] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.017944] No daughter card found
    [    1.021606] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
    [    1.028930] The board is a AM335x Beaglebone Black.
    [    1.037017] tps65217 1-0024: TPS65217 ID 0xe version 1.2
    [    1.045379] print_constraints: DCDC1: 900 <--> 1800 mV at 1500 mV 
    [    1.054931] print_constraints: DCDC2: 900 <--> 3300 mV at 1125 mV 
    [    1.064300] print_constraints: DCDC3: 900 <--> 1500 mV at 1125 mV 
    [    1.073577] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV 
    [    1.082916] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV 
    [    1.092071] print_constraints: LDO3: 1800 <--> 3300 mV at 1800 mV 
    [    1.101409] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV 
    [    1.109375]  omap_hsmmc.0: alias fck already exists
    [    1.115234]  omap_hsmmc.1: alias fck already exists
    [    1.121063]  omap_i2c.3: alias fck already exists
    [    1.126678] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
    [    1.139434] mtdoops: mtd device (mtddev=name/number) must be supplied
    [    1.146972] omap2-nand driver initializing
    [    1.151702] OneNAND driver initializing
    [    1.158508] CAN device driver interface
    [    1.162536] CAN bus driver for Bosch D_CAN controller 1.0
    [    1.218017] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    [    1.224548] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
    [    1.232238] davinci_mdio.0: probed
    [    1.235809] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
    [    1.245117] usbcore: registered new interface driver zd1201
    [    1.251403] usbcore: registered new interface driver cdc_ether
    [    1.257873] usbcore: registered new interface driver cdc_eem
    [    1.264160] usbcore: registered new interface driver dm9601
    [    1.270111] cdc_ncm: 04-Aug-2011
    [    1.273834] usbcore: registered new interface driver cdc_ncm
    [    1.279815] Initializing USB Mass Storage driver...
    [    1.285400] usbcore: registered new interface driver usb-storage
    [    1.291717] USB Mass Storage support registered.
    [    1.297576] mousedev: PS/2 mouse device common for all mice
    [    1.305603] omap_rtc am33xx-rtc: rtc core: registered am33xx-rtc as rtc0
    [    1.312744] am33xx-rtc: already running
    [    1.317108] i2c /dev entries driver
    [    1.322143] Linux video capture interface: v2.00
    [    1.327697] usbcore: registered new interface driver uvcvideo
    [    1.333770] USB Video Class driver (1.1.1)
    [    1.342163] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [    1.425506] cpuidle: using governor ladder
    [    1.430541] cpuidle: using governor menu
    [    1.438903] omap4_aes_mod_init: loading AM33X AES driver
    [    1.444641] omap4-aes omap4-aes: AM33X AES hw accel rev: 3.02
    [    1.451599] omap4_aes_probe: probe() done
    [    1.456115] omap4_sham_mod_init: loading AM33X SHA/MD5 driver
    [    1.462341] omap4-sham omap4-sham: AM33X SHA/MD5 hw accel rev: 4.03
    [    1.482177] omap4_sham_probe: probe() done
    [    1.489776] usbcore: registered new interface driver usbhid
    [    1.495666] usbhid: USB HID core driver
    [    1.500793] usbcore: registered new interface driver snd-usb-audio
    [    1.509399] ALSA device list:
    [    1.512542]   No soundcards found.
    [    1.516113] oprofile: hardware counters not available
    [    1.521484] oprofile: using timer interrupt.
    [    1.526000] nf_conntrack version 0.5.0 (1927 buckets, 7708 max)
    [    1.532806] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    1.538574] TCP cubic registered
    [    1.541992] NET: Registered protocol family 17
    [    1.546691] can: controller area network core (rev 20090105 abi 8)
    [    1.553344] NET: Registered protocol family 29
    [    1.558044] can: raw protocol (rev 20090105)
    [    1.562530] can: broadcast manager protocol (rev 20090105 t)
    [    1.568572] Registering the dns_resolver key type
    [    1.573608] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    [    1.581695] ThumbEE CPU extension supported.
    [    1.586273] mux: Failed to setup hwmod io irq -22
    [    1.592041] Power Management for AM33XX family
    [    1.596954] Trying to load am335x-pm-firmware.bin (60 secs timeout)
    [    1.603729] Copied the M3 firmware to UMEM
    [    1.608123] Cortex M3 Firmware Version = 0x181
    [    1.613525] sr_init: platform driver register failed
    [    1.622924] clock: disabling unused clocks to save power
    [    1.643127] mmc0: host does not support reading read-only switch. assuming write-enable.
    [    1.653869] mmc0: new high speed SDHC card at address f3ff
    [    1.660583] mmcblk0: mmc0:f3ff SD04G 3.69 GiB 
    [    1.667358] Detected MACID=bc:6a:29:93:e5:60
    [    1.673004]  mmcblk0: p1 p2
    [    1.676940] cpsw: Detected MACID = bc:6a:29:93:e5:61
    [    1.684417] omap_rtc am33xx-rtc: setting system clock to 2013-06-25 23:26:45 UTC (1372202805)
    [    1.698303] kjournald starting.  Commit interval 5 seconds
    [    1.704162] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
    [    1.711456] VFS: Mounted root (ext3 filesystem) readonly on device 179:2.
    [    1.719238] Freeing init memory: 236K
    [    5.620849] EXT3-fs (mmcblk0p2): using internal journal
    [    6.399139] net eth0: CPSW phy found : id is : 0x7c0f1
    [   17.250244] Disabling lock debugging due to kernel taint
    [   24.154205]  gadget: Mass Storage Function, version: 2009/09/11
    [   24.160583]  gadget: Number of LUNs=1
    [   24.164459]  lun0: LUN: removable file: /dev/mmcblk0p1
    [   24.169921]  gadget: Mass Storage Gadget, version: 2009/09/11
    [   24.175994]  gadget: userspace failed to provide iSerialNumber
    [   24.182159]  gadget: g_mass_storage ready
    [   24.186431] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    [   24.192108] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
    [   24.200073] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    [   24.207244] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    [   24.214874] usb usb2: Product: MUSB HDRC host driver
    [   24.220123] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
    [   24.225738] usb usb2: SerialNumber: musb-hdrc.0
    [   24.231292] hub 2-0:1.0: USB hub found
    [   24.235260] hub 2-0:1.0: 1 port detected
    [   56.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   58.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   60.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   62.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   64.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   66.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   68.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   70.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   72.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   74.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   76.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   78.239837] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   79.772857] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   79.772888] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   79.772918] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 01
    [   79.872863] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   79.925292] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   79.925292] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   79.925323] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   80.025268] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   80.077697] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   80.077728] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   80.077758] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   80.177703] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   80.230133] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   80.230163] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   80.230194] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   80.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   80.330169] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   80.492248] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   80.492279] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   80.492279] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   80.549835] hub 1-0:1.0: over-current condition on port 1
    [   80.592254] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   80.752258] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   80.752258] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   80.752288] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   80.809814] hub 1-0:1.0: over-current condition on port 1
    [   80.852264] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   81.012237] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   81.012268] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   81.012298] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   81.069824] hub 1-0:1.0: over-current condition on port 1
    [   81.112243] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   81.272247] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   81.272277] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   81.272308] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   81.329833] hub 1-0:1.0: over-current condition on port 1
    [   81.372253] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   81.532226] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   81.532257] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   81.532257] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   81.589813] hub 1-0:1.0: over-current condition on port 1
    [   81.632232] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   81.792266] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   81.792266] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   81.792297] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   81.849792] hub 1-0:1.0: over-current condition on port 1
    [   81.892272] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   82.052246] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   82.052246] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   82.052276] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   82.109802] hub 1-0:1.0: over-current condition on port 1
    [   82.152252] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   82.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   82.312225] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   82.312255] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   82.312255] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   82.369812] hub 1-0:1.0: over-current condition on port 1
    [   82.412231] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   82.572326] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   82.572357] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   82.572357] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   82.629821] hub 1-0:1.0: over-current condition on port 1
    [   82.672302] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   82.832275] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   82.832275] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   82.832305] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   82.889831] hub 1-0:1.0: over-current condition on port 1
    [   82.932250] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   83.092254] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   83.092285] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   83.092285] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   83.149810] hub 1-0:1.0: over-current condition on port 1
    [   83.192260] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   83.352264] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   83.352264] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   83.352294] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   83.409820] hub 1-0:1.0: over-current condition on port 1
    [   83.452270] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   83.612243] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   83.612274] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   83.612304] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   83.669830] hub 1-0:1.0: over-current condition on port 1
    [   83.712249] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   83.872253] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   83.872283] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   83.872283] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   83.929809] hub 1-0:1.0: over-current condition on port 1
    [   83.972259] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   84.132232] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   84.132263] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   84.132263] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   84.189788] hub 1-0:1.0: over-current condition on port 1
    [   84.232238] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   84.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   84.392242] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   84.392272] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   84.392272] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   84.449798] hub 1-0:1.0: over-current condition on port 1
    [   84.492248] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   84.652252] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   84.652252] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   84.652282] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   84.709808] hub 1-0:1.0: over-current condition on port 1
    [   84.752258] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   84.912261] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   84.912261] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   84.912292] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   84.969818] hub 1-0:1.0: over-current condition on port 1
    [   85.012237] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   85.172241] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   85.172271] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   85.172302] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   85.229827] hub 1-0:1.0: over-current condition on port 1
    [   85.272247] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   85.432250] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   85.432281] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   85.432312] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   85.489837] hub 1-0:1.0: over-current condition on port 1
    [   85.532257] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   85.692260] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   85.692260] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   85.692291] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   85.749786] hub 1-0:1.0: over-current condition on port 1
    [   85.792266] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   85.952239] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   85.952270] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   85.952301] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   86.009796] hub 1-0:1.0: over-current condition on port 1
    [   86.052246] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.212371] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   86.212371] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   86.212402] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   86.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   86.269805] hub 1-0:1.0: over-current condition on port 1
    [   86.312377] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.472229] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   86.472259] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   86.472290] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   86.529815] hub 1-0:1.0: over-current condition on port 1
    [   86.572235] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.732269] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   86.732269] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   86.732299] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   86.789794] hub 1-0:1.0: over-current condition on port 1
    [   86.832275] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   86.992248] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   86.992279] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   86.992309] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   87.049926] hub 1-0:1.0: over-current condition on port 1
    [   87.092254] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   87.252258] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   87.252288] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   87.252288] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   87.309844] hub 1-0:1.0: over-current condition on port 1
    [   87.352264] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   87.512268] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   87.512298] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   87.512329] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   87.569854] hub 1-0:1.0: over-current condition on port 1
    [   87.612274] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   87.772247] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   87.772247] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   87.772277] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   87.829803] hub 1-0:1.0: over-current condition on port 1
    [   87.872253] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   88.032226] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   88.032257] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   88.032287] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   88.089813] hub 1-0:1.0: over-current condition on port 1
    [   88.132232] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   88.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   88.292297] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   88.292297] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   88.292327] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   88.349822] hub 1-0:1.0: over-current condition on port 1
    [   88.392272] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   88.552246] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   88.552246] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   88.552276] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   88.609832] hub 1-0:1.0: over-current condition on port 1
    [   88.652252] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   88.812255] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   88.812286] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   88.812286] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   88.869842] hub 1-0:1.0: over-current condition on port 1
    [   88.912261] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   89.072265] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   89.072265] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   89.072296] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   89.129821] hub 1-0:1.0: over-current condition on port 1
    [   89.172271] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   89.332244] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   89.332275] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   89.332305] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   89.389831] hub 1-0:1.0: over-current condition on port 1
    [   89.432250] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   89.592315] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   89.592346] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   89.592376] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   89.649841] hub 1-0:1.0: over-current condition on port 1
    [   89.692291] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   89.852264] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   89.852264] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   89.852294] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   89.909820] hub 1-0:1.0: over-current condition on port 1
    [   89.952270] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   90.112243] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   90.112243] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   90.112274] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   90.169830] hub 1-0:1.0: over-current condition on port 1
    [   90.212249] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   90.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   90.372253] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   90.372283] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   90.372283] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   90.429840] hub 1-0:1.0: over-current condition on port 1
    [   90.472259] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   90.632263] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   90.632293] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   90.632293] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   90.689788] hub 1-0:1.0: over-current condition on port 1
    [   90.732269] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   90.892242] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   90.892272] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   90.892303] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   90.949798] hub 1-0:1.0: over-current condition on port 1
    [   90.992248] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.152252] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   91.152252] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   91.152282] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   91.209808] hub 1-0:1.0: over-current condition on port 1
    [   91.252258] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.412231] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   91.412261] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   91.412292] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   91.469818] hub 1-0:1.0: over-current condition on port 1
    [   91.512237] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.672241] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   91.672271] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   91.672302] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   91.729797] hub 1-0:1.0: over-current condition on port 1
    [   91.772277] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   91.932250] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   91.932281] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   91.932281] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   91.989837] hub 1-0:1.0: over-current condition on port 1
    [   92.032257] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   92.192260] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   92.192291] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   92.192321] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   92.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   92.249938] hub 1-0:1.0: over-current condition on port 1
    [   92.292266] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   92.452758] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   92.452789] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   92.452789] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   92.509887] hub 1-0:1.0: over-current condition on port 1
    [   92.552795] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   92.712249] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   92.712280] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   92.712310] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   92.769805] hub 1-0:1.0: over-current condition on port 1
    [   92.812255] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   92.972259] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   92.972259] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   92.972290] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   93.029815] hub 1-0:1.0: over-current condition on port 1
    [   93.072265] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   93.232238] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   93.232269] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   93.232299] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   93.289794] hub 1-0:1.0: over-current condition on port 1
    [   93.332275] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   93.492248] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   93.492279] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   93.492279] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   93.549804] hub 1-0:1.0: over-current condition on port 1
    [   93.592254] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   93.752258] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   93.752258] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   93.752288] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   93.809814] hub 1-0:1.0: over-current condition on port 1
    [   93.852233] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   94.012268] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   94.012268] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   94.012298] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   94.069824] hub 1-0:1.0: over-current condition on port 1
    [   94.112243] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   94.239776] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   94.272247] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   94.272247] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   94.272277] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   94.329803] hub 1-0:1.0: over-current condition on port 1
    [   94.372253] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   94.532226] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   94.532257] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   94.532287] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   94.589813] hub 1-0:1.0: over-current condition on port 1
    [   94.632232] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   94.792266] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   94.792266] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   94.792297] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   94.849792] hub 1-0:1.0: over-current condition on port 1
    [   94.892242] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.052246] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   95.052276] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   95.052276] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   95.109832] hub 1-0:1.0: over-current condition on port 1
    [   95.152252] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.312255] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   95.312286] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   95.312286] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   95.369812] hub 1-0:1.0: over-current condition on port 1
    [   95.412261] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.572265] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   95.572265] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   95.572296] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   95.629791] hub 1-0:1.0: over-current condition on port 1
    [   95.672271] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   95.832275] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   95.832275] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   95.832305] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   95.889801] hub 1-0:1.0: over-current condition on port 1
    [   95.932281] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   96.092254] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   96.092254] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   96.092285] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   96.149810] hub 1-0:1.0: over-current condition on port 1
    [   96.192260] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   96.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   96.352264] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   96.352264] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   96.352294] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   96.409820] hub 1-0:1.0: over-current condition on port 1
    [   96.452270] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   96.612243] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   96.612274] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   96.612274] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   96.669799] hub 1-0:1.0: over-current condition on port 1
    [   96.712249] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   96.872253] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   96.872253] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   96.872283] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   96.929809] hub 1-0:1.0: over-current condition on port 1
    [   96.972259] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.132263] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   97.132263] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   97.132293] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   97.189819] hub 1-0:1.0: over-current condition on port 1
    [   97.232269] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.392242] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   97.392242] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   97.392272] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   97.449829] hub 1-0:1.0: over-current condition on port 1
    [   97.492279] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.652282] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   97.652313] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   97.652343] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   97.709838] hub 1-0:1.0: over-current condition on port 1
    [   97.752288] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   97.912261] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   97.912261] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   97.912292] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   97.969787] hub 1-0:1.0: over-current condition on port 1
    [   98.012268] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   98.172241] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   98.172271] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   98.172302] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   98.229797] hub 1-0:1.0: over-current condition on port 1
    [   98.239807] musb-hdrc musb-hdrc.0: Poll devctl 80 (b_idle)
    [   98.272247] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   98.432250] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   98.432281] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   98.432312] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   98.489807] hub 1-0:1.0: over-current condition on port 1
    [   98.532257] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   98.692260] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   98.692260] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   98.692291] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   98.749816] hub 1-0:1.0: over-current condition on port 1
    [   98.792266] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   98.952270] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   98.952270] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   98.952301] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    [   99.009826] hub 1-0:1.0: over-current condition on port 1
    [   99.052246] musb-hdrc musb-hdrc.1: usbintr (80) epintr(0)
    [   99.212280] musb-hdrc musb-hdrc.1: usbintr (100) epintr(0)
    [   99.212280] musb-hdrc musb-hdrc.1: Only micro-A plug is connected
    [   99.212310] musb-hdrc musb-hdrc.1: VBUS on (a_wait_vrise), devctl 09
    
     is boot with usb stick plugged in

    and screen log 0574.20131104usblog.txt is here for reference.

  • Yonghui,

    Thanks for the logs. That shows most likely it is a board issue, since the VBUSERROR (usbintr=80) even happens without any usb device connected.

    Any you sure VBUS is always 5V after board powered on? Your scope screenshot you provided on 10/30 shows that USB1_DRVVBUS goes high for 100ms, but USB1_VBUS is always 0v.

    Can you please use scope to measure USB1_DRVVBUS & USB1_VBUS again? Please capture the first time when USB1_DRVVBUS rises, also pay attention that USB1_VBUS should rise to 5V after USB1_DRVVBUS rised high, and also notice when USB1_VBUS dropped.

    The right behavior should be that after powering on the board and USB drivers are initialized, USB1_DRVVBUS goes high, then USB1_VBUS should rise to 5V within 100ms, then both stay in 5V.

  • Liu Bin,

    Thank you very much for your warm support those days!

    I've solved this problem by re-mounting usb related hardwares, seems there are some unstable hardware mounting points as you analyzed, your suggesting tests helped me much to find them step by step.

    Best regards!

    Lin Yonghui

  • Younghui,

    Glad you got the issue fixed. Can you please specify which part you re-mounted? am335x, or U2, or something else? Thanks.

  • We re-mounted all related parts, but should not be related to am335x and U2, mostly should be connectors and cap/res, etc.

    We don't have test points for am335x usb signals, but VBUS and DRVVBUS signals work well on the board, so we have to guess some signals are not connected to am335x correctly.

  • Thanks for the update.

    In your final board design, please keep the VBUS cap on the right side of U2 and minimum 120uF, as this is the requirement in the USB Specs to limit the vbus droop due to in-rush current.

  • Sure, thank you!

  • My board have this problem before.My SCH is like that:DRVVBUS connect in a 1.2K resister ,do not pull down tps2051 EN pin,when i remove the tps2051 ,this problem will hapeen.So check your  circuit please.