This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Linux/AM3357: USB issue while booting Linux

Part Number: AM3357
Other Parts Discussed in Thread: AM3352, TPS65910

Tool/software: Linux

 Started Network Service.                                                      
[   19.509038] hub 1-0:1.0: 1 port detected                                     
[   19.584902] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver                
[   19.618953] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus2
[   19.629662] net eth0: initializing cpsw version 1.12 (0)                     
[   19.635043] net eth0: initialized cpsw ale version 1.4                       
[   19.645554] net eth0: ALE Table size 1024                                    
[   19.669050] hub 2-0:1.0: USB hub found                                       
[   19.675229] net eth0: phy "4a101000.mdio:00" not found on slave 0, err -19   
[   19.689062] hub 2-0:1.0: 1 port detected                                     
[   19.719055] libphy: PHY  not found                                           
[   19.722518] net eth0: phy "" not found on slave 1, err -19                   
[   19.778425] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready               
[   20.812004] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.816560] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.821121] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.825612] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.830117] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.834604] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.839106] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.843594] musb-hdrc musb-hdrc.1.auto: Babble                               
[   20.848080] musb-hdrc musb-hdrc.1.auto: Babble 

i am getting this while booting linux in our custom board. can anyone help me in resolving this issue.

  • What is your Linux version? What is connected to the USB? Please post the USB part of the schematic.
  • I am using the linux-4.4.19+gitAUTOINC+db0b54cdad-gdb0b54cdad version and nothing is connected to USB micro, the USB 0 is usb part in schematic

  • What I really meant is that we need to see the USB portion of the schematic.
  • It is same as the one in EVM (USB 0).
  • Then what are these messages:

    [   19.669050] hub 2-0:1.0: USB hub found                                       
    .............
    [   19.689062] hub 2-0:1.0: 1 port detected    

    What Linux version are you using?
  • I am using the linux 4.4.19

    I am able to boot by disabling the USB support in .config, but if i enable those messages are coming.

  • I have asked the USB experts to look at this. They will respond here.
  • Sachin T C M2 said:
    It is same as the one in EVM (USB 0).

    Which EVM? AM335x has multiple eval boards, which have different USB0 design.
    Please attach the full kernel boot log.
  • we are using am335x version 1.6

    the problem was solved when I disable the USB related device drivers in in menu config

  • U-Boot 2016.05-00118-gabc6b2a-dirty (Apr 14 2017 - 17:24:30 +0530)

    Watchdog enabled
    I2C: ready
    DRAM: 1 GiB
    NAND: 256 MiB
    MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
    *** Error - No Valid Environment Area found
    *** Warning - bad CRC, using default environment

    <ethaddr> not set. Validating first E-fuse MAC
    Net: eth0: ethernet@4a100000
    Warning: usb_ether MAC addresses don't match:
    Address in SROM is de:ad:be:ef:00:01
    Address in environment is 68:c9:0b:75:13:65
    , eth1: usb_ether
    Press SPACE to abort autoboot in 2 seconds
    Booting from nand ...

    NAND read: device 0 offset 0x80000, size 0x40000
    262144 bytes read: OK

    NAND read: device 0 offset 0x200000, size 0x800000
    8388608 bytes read: OK
    Kernel image @ 0x82000000 [ 0x000000 - 0x3517e0 ]
    ## Flattened Device Tree blob at 88000000
    Booting using the fdt blob at 0x88000000
    Loading Device Tree to 8fff3000, end 8ffff06c ... OK

    Starting kernel ...

    [ 0.000000] Booting Linux on physical CPU 0x0
    [ 0.000000] Initializing cgroup subsys cpu
    [ 0.000000] Initializing cgroup subsys cpuacct
    [ 0.000000] Linux version 4.4.19-gdb0b54cdad (root@adems) (gcc version 5.3.17
    [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
    [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instructie
    [ 0.000000] Machine model: TI AM335x EVM
    [ 0.000000] cma: Reserved 24 MiB at 0xbe800000
    [ 0.000000] Memory policy: Data cache writeback
    [ 0.000000] CPU: All CPU(s) started in SVC mode.
    [ 0.000000] AM335X ES2.1 (neon )
    [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pa6
    [ 0.000000] Kernel command line: console=ttyO0,115200n8 root=ubi0:rootfs rw 1
    [ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
    [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
    [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
    [ 0.000000] Memory: 1003936K/1048576K available (6615K kernel code, 314K rwd)
    [ 0.000000] Virtual kernel memory layout:
    [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
    [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
    [ 0.000000] vmalloc : 0xf0800000 - 0xff800000 ( 240 MB)
    [ 0.000000] lowmem : 0xc0000000 - 0xf0000000 ( 768 MB)
    [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
    [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
    [ 0.000000] .text : 0xc0008000 - 0xc08c8004 (8961 kB)
    [ 0.000000] .init : 0xc08c9000 - 0xc090c000 ( 268 kB)
    [ 0.000000] .data : 0xc090c000 - 0xc095a990 ( 315 kB)
    [ 0.000000] .bss : 0xc095a990 - 0xc099d158 ( 266 kB)
    [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
    [ 0.000000] Preemptible hierarchical RCU implementation.
    [ 0.000000] Build-time adjustment of leaf fanout to 32.
    [ 0.000000] NR_IRQS:16 nr_irqs:16 16
    [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrus
    [ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz
    [ 0.000016] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 8947s
    [ 0.000042] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, mas
    [ 0.000056] OMAP clocksource: timer1 at 24000000 Hz
    [ 0.000262] clocksource_probe: no matching clocksources found
    [ 0.000475] Console: colour dummy device 80x30
    [ 0.000508] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
    [ 0.000516] This ensures that you still see kernel messages. Please
    [ 0.000523] update your kernel commandline.
    [ 0.000545] Calibrating delay loop... 597.60 BogoMIPS (lpj=2988032)
    [ 0.118827] pid_max: default: 32768 minimum: 301
    [ 0.118988] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
    [ 0.119005] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
    [ 0.119870] Initializing cgroup subsys io
    [ 0.119909] Initializing cgroup subsys memory
    [ 0.119954] Initializing cgroup subsys devices
    [ 0.119974] Initializing cgroup subsys freezer
    [ 0.119992] Initializing cgroup subsys perf_event
    [ 0.120008] Initializing cgroup subsys pids
    [ 0.120044] CPU: Testing write buffer coherency: ok
    [ 0.120508] Setting up static identity map for 0x80008200 - 0x80008258
    [ 0.123275] devtmpfs: initialized
    [ 0.138970] VFP support v0.3: implementor 41 architecture 3 part 30 variant 3
    [ 0.157175] omap_hwmod: debugss: _wait_target_disable failed
    [ 0.215588] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, ms
    [ 0.218130] pinctrl core: initialized pinctrl subsystem
    [ 0.219914] NET: Registered protocol family 16
    [ 0.222433] DMA: preallocated 256 KiB pool for atomic coherent allocations
    [ 0.248834] cpuidle: using governor ladder
    [ 0.278823] cpuidle: using governor menu
    [ 0.284601] OMAP GPIO hardware version 0.1
    [ 0.295006] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4e
    [ 0.297696] hw-breakpoint: debug architecture 0x4 unsupported.
    [ 0.339814] edma 49000000.edma: TI EDMA DMA engine driver
    [ 0.345037] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_we
    [ 0.345208] media: Linux media interface: v0.10
    [ 0.345303] Linux video capture interface: v2.00
    [ 0.345368] pps_core: LinuxPPS API ver. 1 registered
    [ 0.345378] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giom>
    [ 0.345416] PTP clock support registered
    [ 0.345492] EDAC MC: Ver: 3.0.0
    [ 0.346911] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
    [ 0.347311] Advanced Linux Sound Architecture Driver Initialized.
    [ 0.348868] clocksource: Switched to clocksource timer1
    [ 0.363002] NET: Registered protocol family 2
    [ 0.363963] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
    [ 0.364086] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
    [ 0.364196] TCP: Hash tables configured (established 8192 bind 8192)
    [ 0.364319] UDP hash table entries: 512 (order: 1, 8192 bytes)
    [ 0.364356] UDP-Lite hash table entries: 512 (order: 1, 8192 bytes)
    [ 0.364551] NET: Registered protocol family 1
    [ 0.365035] RPC: Registered named UNIX socket transport module.
    [ 0.365053] RPC: Registered udp transport module.
    [ 0.365062] RPC: Registered tcp transport module.
    [ 0.365071] RPC: Registered tcp NFSv4.1 backchannel transport module.
    [ 0.366175] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 countee
    [ 0.368591] futex hash table entries: 256 (order: -1, 3072 bytes)
    [ 0.379603] squashfs: version 4.0 (2009/01/31) Phillip Lougher
    [ 0.380847] NFS: Registering the id_resolver key type
    [ 0.380929] Key type id_resolver registered
    [ 0.380940] Key type id_legacy registered
    [ 0.381034] ntfs: driver 2.1.32 [Flags: R/O].
    [ 0.381422] jffs2: version 2.2. (NAND) �© 2001-2006 Red Hat, Inc.
    [ 0.385913] bounce: pool size: 64 pages
    [ 0.386230] Block layer SCSI generic (bsg) driver version 0.4 loaded (major )
    [ 0.386258] io scheduler noop registered
    [ 0.386276] io scheduler deadline registered
    [ 0.386478] io scheduler cfq registered (default)
    [ 0.388158] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
    [ 0.471536] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
    [ 0.476770] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 158, base_baud 0
    [ 1.096028] console [ttyS0] enabled
    [ 1.101049] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 159, base_baud 0
    [ 1.111236] [drm] Initialized drm 1.1.0 20060810
    [ 1.118229] tilcdc 4830e000.lcdc: no encoders/connectors found
    [ 1.133470] loop: module loaded
    [ 1.140099] libphy: Fixed MDIO Bus: probed
    [ 1.208886] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
    [ 1.215030] davinci_mdio 4a101000.mdio: detected phy mask fffffffe
    [ 1.222327] libphy: 4a101000.mdio: probed
    [ 1.226379] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, dri7
    [ 1.235618] cpsw 4a100000.ethernet: No slave[1] phy_id, phy-handle, or fixedy
    [ 1.244049] cpsw 4a100000.ethernet: Detected MACID = 68:c9:0b:75:13:63
    [ 1.252892] mousedev: PS/2 mouse device common for all mice
    [ 1.259364] i2c /dev entries driver
    [ 1.264184] cpuidle: enable-method property 'ti,am3352' found operations
    [ 1.272039] omap_hsmmc 48060000.mmc: Got CD GPIO
    [ 1.422844] ledtrig-cpu: registered to indicate activity on CPUs
    [ 1.433744] NET: Registered protocol family 10
    [ 1.440016] sit: IPv6 over IPv4 tunneling driver
    [ 1.445660] NET: Registered protocol family 17
    [ 1.450663] Key type dns_resolver registered
    [ 1.455171] omap_voltage_late_init: Voltage driver support not added
    [ 1.465649] omap-gpmc 50000000.gpmc: GPMC revision 6.0
    [ 1.471019] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
    [ 1.478930] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
    [ 1.485322] nand: Micron MT29F2G08ABAEAWP
    [ 1.489403] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB si4
    [ 1.497044] nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme
    [ 1.502533] 10 ofpart partitions found on MTD device 8000000.nand
    [ 1.508658] Creating 10 MTD partitions on "8000000.nand":
    [ 1.514112] 0x000000000000-0x000000020000 : "NAND.SPL"
    [ 1.521064] 0x000000020000-0x000000040000 : "NAND.SPL.backup1"
    [ 1.528485] 0x000000040000-0x000000060000 : "NAND.SPL.backup2"
    [ 1.535972] 0x000000060000-0x000000080000 : "NAND.SPL.backup3"
    [ 1.543316] 0x000000080000-0x0000000c0000 : "NAND.u-boot-spl-os"
    [ 1.550856] 0x0000000c0000-0x0000001c0000 : "NAND.u-boot"
    [ 1.558023] 0x0000001c0000-0x0000001e0000 : "NAND.u-boot-env"
    [ 1.565345] 0x0000001e0000-0x000000200000 : "NAND.u-boot-env.backup1"
    [ 1.573344] 0x000000200000-0x000000a00000 : "NAND.kernel"
    [ 1.583108] 0x000000a00000-0x000010000000 : "NAND.file-system"
    [ 1.699071] tps65910 0-002d: No interrupt support, no core IRQ
    [ 1.729958] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
    [ 1.736416] omap_hsmmc 48060000.mmc: Got CD GPIO
    [ 1.741704] vmmc: supplied by vbat
    [ 1.779607] vdd_mpu: supplied by vbat
    [ 1.789858] ubi0: attaching mtd9
    [ 3.751726] ubi0: scanning is finished
    [ 3.780859] ubi0: attached mtd9 (name "NAND.file-system", size 246 MiB)
    [ 3.787596] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
    [ 3.794582] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 512
    [ 3.801387] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
    [ 3.808432] ubi0: good PEBs: 1968, bad PEBs: 0, corrupted PEBs: 0
    [ 3.814628] ubi0: user volume: 1, internal volumes: 1, max. volumes count: 18
    [ 3.821957] ubi0: max/mean erase counter: 2/0, WL threshold: 4096, image seq6
    [ 3.831203] ubi0: available PEBs: 0, total reserved PEBs: 1968, PEBs reserve0
    [ 3.840632] ubi0: background thread "ubi_bgt0d" started, PID 58
    [ 3.848157] hctosys: unable to open rtc device (rtc0)
    [ 3.857784] lis3_reg: disabling
    [ 3.861064] wlan-en-regulator: disabling
    [ 3.865443] ALSA device list:
    [ 3.868436] No soundcards found.
    [ 3.878938] UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 59
    [ 3.932645] UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "roo"
    [ 3.940256] UBIFS (ubi0:0): LEB size: 126976 bytes (124 KiB), min./max. I/O s
    [ 3.950254] UBIFS (ubi0:0): FS size: 242905088 bytes (231 MiB, 1913 LEBs), j)
    [ 3.961018] UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB)
    [ 3.966888] UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID 33E7l
    [ 3.979862] VFS: Mounted root (ubifs filesystem) on device 0:14.
    [ 3.987431] devtmpfs: mounted
    [ 3.990910] Freeing unused kernel memory: 268K (c08c9000 - c090c000)
    [ 3.997292] This architecture does not have kernel memory protection.
    [ 4.205958] systemd[1]: System time before build time, advancing clock.
    [ 4.273216] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.305113] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.328424] systemd[1]: systemd 229 running in system mode. (+PAM -AUDIT -SE)
    [ 4.348205] systemd[1]: Detected architecture arm.

    Welcome to Arago 2016.08!

    [ 4.381124] systemd[1]: Set hostname to <am335x-evm>.
    [ 4.561461] random: systemd-sysv-ge: uninitialized urandom read (16 bytes re)
    [ 4.610889] random: systemd-sysv-ge: uninitialized urandom read (16 bytes re)
    [ 4.673292] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.734201] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.744240] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.754907] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.823083] random: systemd: uninitialized urandom read (16 bytes read, 11 b)
    [ 4.855574] random: systemd: uninitialized urandom read (16 bytes read, 12 b)
    [ 5.135772] systemd[1]: Listening on Network Service Netlink Socket.
    [ OK ] Listening on Network Service Netlink Socket.
    [ 5.169325] systemd[1]: Reached target Swap.
    [ OK ] Reached target Swap.
    [ 5.189237] systemd[1]: Reached target Remote File Systems.
    [ OK ] Reached target Remote File Systems.
    [ 5.224038] systemd[1]: Created slice User and Session Slice.
    [ OK ] Created slice User and Session Slice.
    [ 5.249804] systemd[1]: Listening on Journal Socket.
    [ OK ] Listening on Journal Socket.
    [ 5.279569] systemd[1]: Listening on udev Kernel Socket.
    [ OK ] Listening on udev Kernel Socket.
    [ 5.309563] systemd[1]: Listening on udev Control Socket.
    [ OK ] Listening on udev Control Socket.
    [ 5.339570] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
    [ OK ] Listening on /dev/initctl Compatibility Named Pipe.
    [ 5.369511] systemd[1]: Listening on Journal Socket (/dev/log).
    [ OK ] Listening on Journal Socket (/dev/log).
    [ 5.399461] systemd[1]: Listening on Syslog Socket.
    [ OK ] Listening on Syslog Socket.
    [ 5.429710] systemd[1]: Started Dispatch Password Requests to Console Direct.
    [ OK ] Started Dispatch Password Requests to Console Directory Watch.
    [ 5.485654] systemd[1]: Created slice System Slice.
    [ OK ] Created slice System Slice.
    [ 5.515230] systemd[1]: Mounting Debug File System...
    Mounting Debug File System...
    [ 5.581377] systemd[1]: Starting Create list of required static device nodes.
    Starting Create list of required st... nodes for the current kernel...
    [ 5.656554] systemd[1]: Created slice system-getty.slice.
    [ OK ] Created slice system-getty.slice.
    [ 5.694397] systemd[1]: Starting Apply Kernel Variables...
    Starting Apply Kernel Variables...
    [ 5.735208] systemd[1]: Starting Journal Service...
    Starting Journal Service...
    [ 5.789480] systemd[1]: Reached target Slices.
    [ OK ] Reached target Slices.
    [ 5.824669] systemd[1]: Starting Remount Root and Kernel File Systems...
    Starting Remount Root and Kernel File Systems...
    [ 5.884468] systemd[1]: Starting Setup Virtual Console...
    Starting Setup Virtual Console...
    [ 5.971842] systemd[1]: Created slice system-serial\x2dgetty.slice.
    [ OK ] Created slice system-serial\x2dgetty.slice.
    [ 6.026836] systemd[1]: Mounting Temporary Directory...
    Mounting Temporary Directory...
    [ 6.104736] systemd[1]: Mounting POSIX Message Queue File System...
    Mounting POSIX Message Queue File System...
    [ 6.169900] systemd[1]: Started Forward Password Requests to Wall Directory .
    [ OK ] Started Forward Password Requests to Wall Directory Watch.
    [ 6.189532] systemd[1]: Reached target Paths.
    [ OK ] Reached target Paths.
    [ 6.238330] systemd[1]: Mounted Debug File System.
    [ OK ] Mounted Debug File System.
    [ 6.279662] systemd[1]: Mounted POSIX Message Queue File System.
    [ OK ] Mounted POSIX Message Queue File System.
    [ 6.299636] systemd[1]: Mounted Temporary Directory.
    [ OK ] Mounted Temporary Directory.
    [ 6.330177] systemd[1]: Started Journal Service.
    [ OK ] Started Journal Service.
    [ OK ] Started Create list of required sta...ce nodes for the current kernel.
    [ OK ] Started Apply Kernel Variables.
    [ OK ] Started Remount Root and Kernel File Systems.
    [ OK ] Started Setup Virtual Console.
    Starting udev Coldplug all Devices...
    Starting Create Static Device Nodes in /dev...
    Starting Flush Journal to Persistent Storage...
    [ OK ] Started Create Static Device Nodes in /dev.
    [ 8.073469] systemd-journald[83]: Received request to flush runtime journal 1
    [ OK ] Started Flush Journal to Persistent Storage.
    [ OK ] Reached target Local File Systems (Pre).
    Mounting /var/volatile...
    Mounting /media/ram...
    Starting udev Kernel Device Manager...
    [ OK ] Mounted /var/volatile.
    [ OK ] Mounted /media/ram.
    [ OK ] Started udev Kernel Device Manager.
    [ OK ] Reached target Local File Systems.
    Starting Create Volatile Files and Directories...
    Starting Load/Save Random Seed...
    [ OK ] Started Load/Save Random Seed.
    [ OK ] Started Create Volatile Files and Directories.
    [ 10.352614] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
    [ 10.435308] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc as rtc0
    [ 10.546665] 47401300.usb-phy supply vcc not found, using dummy regulator
    [ 10.651780] 47401b00.usb-phy supply vcc not found, using dummy regulator
    [ OK ] Started udev Coldplug all Devices.
    [ 10.998552] omap_rng 48310000.rng: OMAP Random Number Generator ver. 20
    [ OK ] Found device /dev/ttyS0.
    [ 11.504233] ti-pruss 4a300000.pruss: creating PRU cores and other child plats
    [ 11.630598] irq: no irq domain found for /ocp/pruss@4a300000/intc@4a320000 !
    [ 11.638417] irq: no irq domain found for /ocp/pruss@4a300000/intc@4a320000 !
    [ 11.865794] remoteproc0: 4a334000.pru0 is available
    [ 11.969017] remoteproc0: Note: remoteproc is still under development and co.
    [ 11.978058] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and backwa.
    Starting Network Time Synchronization...
    [ 12.110301] remoteproc0: Direct firmware load for am335x-pru0-fw failed wit2
    [ 12.118289] remoteproc0: failed to load am335x-pru0-fw
    [ 12.203349] pru-rproc 4a334000.pru0: booting the PRU core manually
    [ 12.223931] remoteproc0: powering up 4a334000.pru0
    [ 12.269117] remoteproc0: Direct firmware load for am335x-pru0-fw failed wit2
    [ 12.277112] remoteproc0: request_firmware failed: -2
    Starting Update UTMP about System Boot/Shutdown...
    [ 12.422160] pru-rproc 4a334000.pru0: rproc_boot failed
    [ 12.427468] remoteproc0: releasing 4a334000.pru0
    [ 12.565195] pru-rproc: probe of 4a334000.pru0 failed with error -2
    [ 12.679601] remoteproc0: 4a338000.pru1 is available
    [ 12.684623] remoteproc0: Note: remoteproc is still under development and co.
    [ 12.821420] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and backwa.
    [ 12.984913] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2
    [ 12.991016] remoteproc0: Direct firmware load for am335x-pru1-fw failed wit2
    [ 13.080051] remoteproc0: failed to load am335x-pru1-fw
    [ 13.085376] pru-rproc 4a338000.pru1: booting the PRU core manually
    [ 13.136480] remoteproc0: powering up 4a338000.pru1
    [ OK ] Started Network Time Synchronization.
    [ 13.213942] remoteproc0: Direct firmware load for am335x-pru1-fw failed wit2
    [ 13.307411] remoteproc1: wkup_m3 is available
    [ 13.319661] remoteproc0: request_firmware failed: -2
    [ 13.324776] pru-rproc 4a338000.pru1: rproc_boot failed
    [ 13.372385] remoteproc1: Note: remoteproc is still under development and co.
    [ 13.453703] remoteproc0: releasing 4a338000.pru1
    [ 13.458611] pru-rproc: probe of 4a338000.pru1 failed with error -2
    [ 13.509824] remoteproc1: THE BINARY FORMAT IS NOT YET FINALIZED, and backwa.
    [ 13.692130] omap-sham 53100000.sham: hw accel on OMAP rev 4.3
    [ 13.748201] remoteproc1: powering up wkup_m3
    [ 13.774478] remoteproc1: Booting fw image am335x-pm-firmware.elf, size 21718
    [ 13.829266] remoteproc1: remote processor wkup_m3 is now up
    [ 13.829293] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = 0x191
    [ 14.459526] PM: bootloader does not support rtc-only!
    [ OK ] Started Update UTMP about System Boot/Shutdown.
    [ OK ] Found device /dev/ttyS3.
    [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
    [ OK ] Reached target System Time Synchronized.
    Starting Synchronize System and HW clocks...
    [ OK ] Started Synchronize System and HW clocks.
    [ OK ] Reached target System Initialization.
    [ OK ] Listening on D-Bus System Message Bus Socket.
    [ OK ] Listening on RPCbind Server Activation Socket.
    [ OK ] Reached target Sockets.
    [ OK ] Reached target Basic System.
    [ OK ] Started Kernel Logging Service.
    [ OK ] Started D-Bus System Message Bus.
    Starting Network Service...
    [ OK ] Started System Logging Service.
    Starting Login Service...
    Starting Permit User Sessions...
    Starting Print notice about GPLv3 packages...
    Starting telnetd.service...
    [ OK ] Started Daily Cleanup of Temporary Directories.
    [ OK ] Reached target Timers.
    [ OK ] Started Permit User Sessions.
    [ OK ] Started telnetd.service.
    [ 18.868033] usbcore: registered new interface driver usbfs
    [ 18.967579] usbcore: registered new interface driver hub
    [ 19.014475] usbcore: registered new device driver usb
    [ 19.338747] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
    [ 19.399052] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus1
    [ OK ] Started Network Service.
    [ 19.451442] hub 1-0:1.0: USB hub found
    [ 19.472711] hub 1-0:1.0: 1 port detected
    [ 19.537766] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
    [ 19.583738] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus2
    [ 19.599165] net eth0: initializing cpsw version 1.12 (0)
    [ 19.604554] net eth0: initialized cpsw ale version 1.4
    [ 19.629204] net eth0: ALE Table size 1024
    [ 19.635564] net eth0: phy "4a101000.mdio:00" not found on slave 0, err -19
    [ 19.652172] hub 2-0:1.0: USB hub found
    [ 19.656034] hub 2-0:1.0: 1 port detected
    [ 19.688981] libphy: PHY not found
    [ 19.692443] net eth0: phy "" not found on slave 1, err -19
    [ 19.771874] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    [ 20.781959] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.786533] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.791093] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.795585] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.800090] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.804578] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.809080] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.813567] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.818051] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.822552] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.827039] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.831540] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.836027] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.840528] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.845015] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.849516] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.854003] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.858487] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.862988] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.867474] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.871976] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.876462] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.880964] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.885450] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.889952] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.894438] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.898940] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.903427] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.907911] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.912412] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.916898] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.921408] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.925896] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.930400] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.934886] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.939388] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.943874] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.948359] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.952860] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.957346] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.961847] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.966333] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.970834] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.975320] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.979821] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.984308] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.988809] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.993296] musb-hdrc musb-hdrc.1.auto: Babble
    [ 20.997781] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.002282] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.006769] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.011270] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.015756] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.020258] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.024744] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.029245] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.682218] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.686771] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.691334] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.695824] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.700330] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.704818] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.709320] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.713807] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.718292] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.722793] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.727281] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.731783] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.736269] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.740771] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.745258] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.749760] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.754247] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.758731] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.763233] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.767725] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.772229] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.776716] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.781218] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.785705] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.790206] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.794692] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.799195] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.803681] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.808166] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.812667] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.817154] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.821656] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.826142] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.830644] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.835130] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.839632] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.844119] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.848604] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.853105] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.857593] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.862093] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.866580] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.871082] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.875569] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.880070] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.884557] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.889059] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.893546] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.898030] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.902532] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.907018] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.911519] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.916007] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.920509] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.924996] musb-hdrc musb-hdrc.1.auto: Babble
    [ 21.929497] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.262012] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.266582] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.271139] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.275631] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.280137] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.284623] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.289126] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.293613] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.298097] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.302599] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.307085] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.311587] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.316074] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.320575] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.325061] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.329563] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.334049] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.338533] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.343034] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.347520] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.352021] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.356507] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.361009] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.365496] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.369997] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.374483] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.378985] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.383471] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.387956] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.392457] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.396944] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.401446] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.405932] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.410434] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.414921] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.419422] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.423908] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.428393] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.432894] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.437380] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.441882] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.446368] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.450875] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.455363] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.459864] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.464351] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.468852] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.473339] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.477824] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.482324] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.486811] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.491312] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.495799] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.500300] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.504787] musb-hdrc musb-hdrc.1.auto: Babble
    [ 22.509289] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.068741] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.073372] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.077866] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.082375] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.086864] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.091367] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.095853] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.100356] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.104842] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.109344] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.113832] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.118317] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.122819] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.127305] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.131807] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.136293] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.140795] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.145282] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.149784] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.154270] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.158756] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.163256] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.167742] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.172244] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.176730] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.181231] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.185718] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.190219] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.194706] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.199207] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.203693] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.208177] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.212682] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.217175] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.221677] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.226163] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.230665] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.235151] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.239653] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.244140] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.248624] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.253125] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.257612] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.262113] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.266599] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.271100] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.275587] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.280088] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.284575] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.289077] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.293564] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.298048] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.302550] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.307036] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.311537] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.316023] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.652015] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.656568] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.661131] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.665624] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.670130] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.674618] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.679121] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.683608] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.688092] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.692594] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.697080] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.701583] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.706070] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.710571] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.715057] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.719558] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.724045] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.728530] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.733031] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.737518] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.742020] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.746506] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.751008] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.755500] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.760003] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.764490] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.768992] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.773479] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.777963] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.782465] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.786951] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.791453] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.795940] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.800441] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.804927] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.809429] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.813916] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.818401] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.822903] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.827389] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.831890] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.836377] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.840879] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.845366] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.849868] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.854355] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.858856] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.863343] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.867828] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.872330] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.876816] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.881322] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.885809] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.890311] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.894798] musb-hdrc musb-hdrc.1.auto: Babble
    [ 23.899300] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.232020] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.236570] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.241135] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.245627] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.250135] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.254623] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.259126] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.263613] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.268098] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.272599] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.277085] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.281587] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.286073] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.290574] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.295060] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.299562] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.304048] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.308533] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.313034] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.317520] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.322021] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.326507] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.331009] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.335495] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.339997] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.344483] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.348984] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.353471] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.357956] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.362457] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.366944] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.371446] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.375932] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.380433] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.384919] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.389421] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.393906] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.398391] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.402892] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.407379] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.411880] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.416366] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.420868] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.425354] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.429862] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.434349] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.438850] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.443337] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.447821] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.452321] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.456807] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.461309] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.465795] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.470296] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.474782] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.479283] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.811966] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.816510] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.821059] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.825551] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.830056] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.834543] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.839046] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.843533] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.848018] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.852527] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.857013] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.861515] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.866001] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.870503] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.874989] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.879492] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.883978] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.888463] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.892966] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.897452] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.901954] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.906441] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.910942] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.915429] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.919930] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.924416] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.928918] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.933404] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.937889] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.942390] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.946877] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.951379] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.955865] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.960367] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.964853] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.969355] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.973842] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.978326] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.982827] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.987314] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.991815] musb-hdrc musb-hdrc.1.auto: Babble
    [ 24.996302] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.000804] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.005290] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.009793] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.014279] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.018764] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.023265] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.027751] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.032252] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.036738] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.041241] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.045739] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.050241] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.054727] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.059229] musb-hdrc musb-hdrc.1.auto: Babble
    [ OK ] Reached target Network.
    Starting Network Name Resolution...
    Starting thttpd.service...
    [ 25.392041] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.396607] musb-hdrc musb-hdrc.1.auto: Babble
    [ 25.401183] musb-hdrc musb-hdrc
  • The log shows the babble happens on the 2nd usb port. Does it happen on multiple boards or just one?

    If no usb device is attached to the port when this babble error happened, it might be caused by short, please exam the board that DP or DM is not shortened to VBUS or GROUND.
  • Hello Sir,

    We have checked it, there is no short
  • Sachin,

    The babble condition means the usb controller detects *illegal* bus activities, which doesn't follow the USB protocol. When there is no device attached to the usb port, the usb bus should be idle. So if the issue happened on all your boards, the only cause I could think of is noise on the usb bus, typically due to ESD or poor board layout. You might want to use a high speed scope with high impedance probes to check the usb bus.
  • Hello Sir,

    Before our board was working properly with the same usb, this started happening when I wrote new kernel to nand. I haven't made any changes related to usb in .dts file and .config file also.