Hi,
LTE Modem is connected with AM3352 using USB1 Host interface.
Sometimes USB host connection is disconnected.
to restore connection, turn off/on power or reinstall USB driver.
I attach log message.
Starting kernel ... TMS 3.1 tms ttyS5 tms login: tmsadmin Password: % Service is not available yet. % Service is not available yet. # sh ~ # tail -f /mnt/nvlog/messages & ~ # echo 0 > /sys/class/leds/pwr:cell_gate_en/brightness ~ # echo 1 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 2;echo 1 > /sys/class/leds/pwr:cell_gate_en/brightness Jun 12 11:31:28 tms user.info kernel: [ 31.095461] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3sleep 1;e Jun 12 11:31:28 tms user.info kernel: [ 31.106506] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device Jun 12 11:31:28 tms user.info kernel: [ 31.108853] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-musb-hdrc.1-1, WWAN/QMI device, 36:5f:f3:a4:5d:4a Jun 12 11:31:28 tms daemon.warn systemd-udevd[263]: Could not generate persistent MAC address for wwan0: No such file or directory Jun 12 11:31:09 tms user.info kernel: [ 11.394524] (stk) :ldisc_install = 1 Jun 12 11:31:09 tms user.info kernel: [ 12.406495] (stk) :ldisc installation timeout Jun 12 11:31:10 tms user.info kernel: [ 12.406520] (stk) :ldisc_install = 0 Jun 12 11:31:10 tms user.info kernel: [ 13.444792] (stk) : timed out waiting for ldisc to be un-installed Jun 12 11:31:10 tms user.info kernel: [ 13.446850] Bluetooth: st_register failed -22 Jun 12 11:31:11 tms authpriv.notice login[228]: ROOT LOGIN on '/dev/ttyS5' cho 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 1;echo 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 1;echo 1 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 1;echo 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # lsusb -d 2c7c: -v | grep -e iManufacturer -e iProduct ~ # Jun 12 11:33:49 tms user.notice kernel: [ 172.124768] random: crng init done ~ # lsusb Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ~ # ~ # ~ # rmmod musb_dsps ~ # Jun 12 19:36:53 tms user.info kernel: [29156.373794] musb-hdrc musb-hdrc.1: remove, state 4 Jun 12 19:36:53 tms user.info kernel: [29156.373876] usb usb2: USB disconnect, device number 1 Jun 12 19:36:53 tms user.info kernel: [29156.385792] musb-hdrc musb-hdrc.1: USB bus 2 deregistered Jun 12 19:36:53 tms user.info kernel: [29156.389693] musb-hdrc musb-hdrc.0: remove, state 4 Jun 12 19:36:53 tms user.info kernel: [29156.389763] usb usb1: USB disconnect, device number 1 Jun 12 19:36:53 tms user.info kernel: [29156.404835] musb-hdrc musb-hdrc.0: USB bus 1 deregistered ~ # rmmod musb_hdrc ~ # rmmod musb_am335x rmmod: ERROR: could not remove module musb_am335x: Device or resource busy ~ # modprobe musb_hdrc ~ # modprobe musb_am335x ~ # modprobe musb_dsps ~ # [29194.494827] usb 2-1: device descriptor read/64, error -71 ~ # Jun 12 19:37:31 tms user.info kernel: [29193.775348] musb-hdrc musb-hdrc.0: MUSB HDRC host driver Jun 12 19:37:31 tms user.info kernel: [29193.775452] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1 Jun 12 19:37:31 tms user.info kernel: [29193.783825] hub 1-0:1.0: USB hub found Jun 12 19:37:31 tms user.info kernel: [29193.793213] hub 1-0:1.0: 1 port detected Jun 12 19:37:31 tms user.info kernel: [29193.889831] musb-hdrc musb-hdrc.1: MUSB HDRC host driver Jun 12 19:37:31 tms user.info kernel: [29193.889932] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2 Jun 12 19:37:31 tms user.info kernel: [29193.924916] hub 2-0:1.0: USB hub found Jun 12 19:37:31 tms user.info kernel: [29193.925096] hub 2-0:1.0: 1 port detected Jun 12 19:37:31 tms user.info kernel: [29194.354835] usb 2-1: new full-speed USB device number 2 using musb-hdrc Jun 12 19:37:31 tms user.err kernel: [29194.494827] usb 2-1: device descriptor read/64, error -71 [29194.755081] usb 2-1: device descriptor read/64, error -71 ~ # [29195.154830] usb 2-1: device descriptor read/64, error -71 [29195.414829] usb 2-1: device descriptor read/64, error -71 Jun 12 19:37:32 tms user.err kernel: [29194.755081] usb 2-1: device descriptor read/64, error -71 Jun 12 19:37:32 tms user.info kernel: [29195.014837] usb 2-1: new full-speed USB device number 3 using musb-hdrc Jun 12 19:37:32 tms user.err kernel: [29195.154830] usb 2-1: device descriptor read/64, error -71 Jun 12 19:37:32 tms user.err kernel: [29195.414829] usb 2-1: device descriptor read/64, error -71 Jun 12 19:37:33 tms user.info kernel: [29195.534984] usb usb2-port1: attempt power cycle ~ # Jun 12 19:37:33 tms user.info kernel: [29196.014830] usb 2-1: new full-speed USB device number 4 using musb-hdrc Jun 12 19:37:34 tms user.info kernel: [29196.594839] usb 2-1: new full-speed USB device number 5 using musb-hdrc ~ # ~ # echo 0 > /sys/class/leds/pwr:cell_gate_en/brightness pwr:lte_pwr_onoff/brightness; ~ # echo 1 > /sys/class/leds/pwr:lte_pwr_onoff/brightness; ~ # echo 1 > /sys/class/leds/pwr:cell_gate_en/brightness ~ # echo 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 1;echo 1 > /sys/class/leds/pwr:lte_pwr_onoff/brightness; sleep 1;echo 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # sleep 1;echo 0 > /sys/class/leds/pwr:lte_pwr_onoff/brightness ~ # ~ # lsusb Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ~ # Jun 12 19:38:07 tms user.info kernel: [29229.664839] usb 2-1: new high-speed USB device number 6 using musb-hdrc Jun 12 19:38:07 tms user.info kernel: [29229.852704] option 2-1:1.0: GSM modem (1-port) converter detected Jun 12 19:38:07 tms user.info kernel: [29229.866673] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0 Jun 12 19:38:07 tms user.info kernel: [29229.868396] option 2-1:1.1: GSM modem (1-port) converter detected Jun 12 19:38:07 tms user.info kernel: [29229.875369] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1 Jun 12 19:38:07 tms user.info kernel: [29229.877134] option 2-1:1.2: GSM modem (1-port) converter detected Jun 12 19:38:07 tms user.info kernel: [29229.889778] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2 Jun 12 19:38:07 tms user.info kernel: [29229.891537] option 2-1:1.3: GSM modem (1-port) converter detected Jun 12 19:38:07 tms user.info kernel: [29229.895491] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3 Jun 12 19:38:07 tms user.info kernel: [29229.914875] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device Jun 12 19:38:07 tms user.info kernel: [29229.917297] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-musb-hdrc.1-1, WWAN/QMI device, 36:5f:f3:a4:5d:4a Jun 12 19:38:07 tms daemon.warn systemd-udevd[1429]: Could not generate persistent MAC address for wwan0: No such file or directory ~ # ~ # ~ # ~ # dmesg [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.9.69-g89d085d1a4 (parkjy@auto-dev02) (gcc version 6.4.0 (GCC) ) #1 PREEMPT Fri Jun 12 20:57:27 KST 2020 [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt:Machine model: DASAN TMS 3.0 [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: UEFI not found. [ 0.000000] cma: Reserved 48 MiB at 0x88800000 [ 0.000000] Memory policy: Data cache writeback [ 0.000000] On node 0 totalpages: 65536 [ 0.000000] free_area_init_node: node 0, pgdat c0d46b44, node_mem_map cfda1000 [ 0.000000] Normal zone: 576 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 65536 pages, LIFO batch:15 [ 0.000000] CPU: All CPU(s) started in SVC mode. [ 0.000000] AM335X ES2.1 (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: 64960 [ 0.000000] Kernel command line: console=ttyS5,230400n8 quiet root=ubi0:rootfs rw ubi.mtd=NAND.1.file-system,4096 rootfstype=ubifs rootwait=1 [ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Memory: 196992K/262144K available (8192K kernel code, 292K rwdata, 2656K rodata, 1024K init, 302K bss, 16000K reserved, 49152K cma-reserved, 0K highmem) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0xd0800000 - 0xff800000 ( 752 MB) [ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0008000 - 0xc0900000 (9184 kB) [ 0.000000] .init : 0xc0c00000 - 0xc0d00000 (1024 kB) [ 0.000000] .data : 0xc0d00000 - 0xc0d493d8 ( 293 kB) [ 0.000000] .bss : 0xc0d493d8 - 0xc0d94c98 ( 303 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 interrupts [ 0.000000] OMAP clockevent source: timer2 at 25000000 Hz [ 0.000014] sched_clock: 32 bits at 25MHz, resolution 40ns, wraps every 85899345900ns [ 0.000028] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 76450417870 ns [ 0.000035] OMAP clocksource: timer1 at 25000000 Hz [ 0.000224] clocksource_probe: no matching clocksources found [ 0.000389] Console: colour dummy device 80x30 [ 0.000427] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736) [ 0.089232] pid_max: default: 32768 minimum: 301 [ 0.089354] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.089361] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.090153] CPU: Testing write buffer coherency: ok [ 0.090523] Setting up static identity map for 0x80100000 - 0x80100060 [ 0.091302] EFI services will not be available. [ 0.092460] devtmpfs: initialized [ 0.104674] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3 [ 0.105005] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.105023] futex hash table entries: 256 (order: -1, 3072 bytes) [ 0.108605] pinctrl core: initialized pinctrl subsystem [ 0.110015] NET: Registered protocol family 16 [ 0.111880] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.125209] omap_hwmod: debugss: _wait_target_disable failed [ 0.199222] cpuidle: using governor ladder [ 0.229210] cpuidle: using governor menu [ 0.233262] gpio gpiochip0: (gpio): added GPIO chardev (254:0) [ 0.233631] gpiochip_setup_dev: registered GPIOs 0 to 31 on device: gpiochip0 (gpio) [ 0.234840] OMAP GPIO hardware version 0.1 [ 0.235647] gpio gpiochip1: (gpio): added GPIO chardev (254:1) [ 0.235948] gpiochip_setup_dev: registered GPIOs 32 to 63 on device: gpiochip1 (gpio) [ 0.237691] gpio gpiochip2: (gpio): added GPIO chardev (254:2) [ 0.238080] gpiochip_setup_dev: registered GPIOs 64 to 95 on device: gpiochip2 (gpio) [ 0.240076] gpio gpiochip3: (gpio): added GPIO chardev (254:3) [ 0.240376] gpiochip_setup_dev: registered GPIOs 96 to 127 on device: gpiochip3 (gpio) [ 0.248115] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/nandflash_pins_s0, deferring probe [ 0.250423] No ATAGs? [ 0.250440] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.251378] pstore: using zlib compression [ 0.251398] pstore: Registered ramoops as persistent store backend [ 0.251405] ramoops: attached 0x40000@0x8bfc0000, ecc: 0/0 [ 0.286772] edma 49000000.edma: TI EDMA DMA engine driver [ 0.287131] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/fixedregulator@0[0]' [ 0.287483] of_get_named_gpiod_flags: parsed 'gpio' property of node '/fixedregulator@2[0]' - status (0) [ 0.290490] usbcore: registered new interface driver usbfs [ 0.290551] usbcore: registered new interface driver hub [ 0.290660] usbcore: registered new device driver usb [ 0.290922] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c0_pins, deferring probe [ 0.290971] omap_i2c 4802a000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c1_pins, deferring probe [ 0.291096] media: Linux media interface: v0.10 [ 0.291146] Linux video capture interface: v2.00 [ 0.291183] pps_core: LinuxPPS API ver. 1 registered [ 0.291187] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> [ 0.291205] PTP clock support registered [ 0.291238] EDAC MC: Ver: 3.0.0 [ 0.292258] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400 [ 0.292601] Advanced Linux Sound Architecture Driver Initialized. [ 0.293181] Bluetooth: Core ver 2.22 [ 0.293225] NET: Registered protocol family 31 [ 0.293229] Bluetooth: HCI device and connection manager initialized [ 0.293240] Bluetooth: HCI socket layer initialized [ 0.293248] Bluetooth: L2CAP socket layer initialized [ 0.293273] Bluetooth: SCO socket layer initialized [ 0.294444] clocksource: Switched to clocksource timer1 [ 0.303896] NET: Registered protocol family 2 [ 0.304712] TCP established hash table entries: 2048 (order: 1, 8192 bytes) [ 0.304738] TCP bind hash table entries: 2048 (order: 1, 8192 bytes) [ 0.304759] TCP: Hash tables configured (established 2048 bind 2048) [ 0.304835] UDP hash table entries: 256 (order: 0, 4096 bytes) [ 0.304849] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [ 0.304972] NET: Registered protocol family 1 [ 0.305399] RPC: Registered named UNIX socket transport module. [ 0.305405] RPC: Registered udp transport module. [ 0.305407] RPC: Registered tcp transport module. [ 0.305410] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.305423] PCI: CLS 0 bytes, default 64 [ 0.306400] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available [ 0.308645] workingset: timestamp_bits=14 max_order=16 bucket_order=2 [ 0.315686] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.316508] NFS: Registering the id_resolver key type [ 0.316546] Key type id_resolver registered [ 0.316550] Key type id_legacy registered [ 0.316590] ntfs: driver 2.1.32 [Flags: R/O]. [ 0.321107] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246) [ 0.321122] io scheduler noop registered [ 0.321126] io scheduler deadline registered [ 0.321252] io scheduler cfq registered (default) [ 0.322678] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568 [ 0.378703] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled [ 0.382358] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 158, base_baud = 3000000) is a 8250 [ 0.383362] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 159, base_baud = 3000000) is a 8250 [ 0.384252] 481a6000.serial: ttyS3 at MMIO 0x481a6000 (irq = 160, base_baud = 3000000) is a 8250 [ 0.385257] 481aa000.serial: ttyS5 at MMIO 0x481aa000 (irq = 161, base_baud = 3000000) is a 8250 [ 0.385400] console [ttyS5] enabled [ 0.387104] omap_rng 48310000.rng: OMAP Random Number Generator ver. 20 [ 0.387228] [drm] Initialized [ 0.400544] brd: module loaded [ 0.406786] loop: module loaded [ 0.407353] (stk) :sysfs entries created [ 0.407389] (stk) : debugfs entries created [ 0.410508] libphy: Fixed MDIO Bus: probed [ 0.411565] CAN device driver interface [ 0.412668] c_can_platform 481cc000.can: c_can_platform device registered (regs=fa1cc000, irq=166) [ 0.413456] c_can_platform 481d0000.can: c_can_platform device registered (regs=fa1d0000, irq=167) [ 0.484479] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6 [ 0.484490] davinci_mdio 4a101000.mdio: no live phy, scanning all [ 0.484838] davinci_mdio: probe of 4a101000.mdio failed with error -5 [ 0.485493] cpsw 4a100000.ethernet: Detected MACID = 98:5d:ad:e2:94:eb [ 0.485617] cpsw 4a100000.ethernet: cpts: overflow check period 500 (jiffies) [ 0.487051] usbcore: registered new interface driver qmi_wwan [ 0.487100] usbcore: registered new interface driver cdc_wdm [ 0.487203] usbcore: registered new interface driver usbserial [ 0.487239] usbcore: registered new interface driver option [ 0.487287] usbserial: USB Serial support registered for GSM modem (1-port) [ 0.487749] mousedev: PS/2 mouse device common for all mice [ 0.488344] ais328dq_spi spi1.0: platform data is NULL. using default one. [ 0.488355] ais328dq_acc: hw init start [ 0.488478] ais328dq_acc: int1: 00, int2: 00 [ 0.488578] ais328dq_acc: hw init done [ 0.489018] input: ais328dq_acc as /devices/platform/ocp/48030000.spi/spi_master/spi1/spi1.0/input/input0 [ 0.490006] omap_rtc 44e3e000.rtc: already running [ 0.490379] rtc rtc0: 44e3e000.rtc: dev (253:0) [ 0.490404] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc as rtc0 [ 0.490644] i2c /dev entries driver [ 0.493121] cpuidle: enable-method property 'ti,am3352' found operations [ 0.493951] omap_hsmmc 48060000.mmc: GPIO lookup for consumer cd [ 0.493960] omap_hsmmc 48060000.mmc: using device tree for GPIO lookup [ 0.493970] of_get_named_gpiod_flags: can't parse 'cd-gpios' property of node '/ocp/mmc@48060000[0]' [ 0.493978] of_get_named_gpiod_flags: can't parse 'cd-gpio' property of node '/ocp/mmc@48060000[0]' [ 0.493983] omap_hsmmc 48060000.mmc: using lookup tables for GPIO lookup [ 0.493990] omap_hsmmc 48060000.mmc: lookup for GPIO cd failed [ 0.493999] omap_hsmmc 48060000.mmc: GPIO lookup for consumer wp [ 0.494003] omap_hsmmc 48060000.mmc: using device tree for GPIO lookup [ 0.494009] of_get_named_gpiod_flags: can't parse 'wp-gpios' property of node '/ocp/mmc@48060000[0]' [ 0.494014] of_get_named_gpiod_flags: can't parse 'wp-gpio' property of node '/ocp/mmc@48060000[0]' [ 0.494018] omap_hsmmc 48060000.mmc: using lookup tables for GPIO lookup [ 0.494023] omap_hsmmc 48060000.mmc: lookup for GPIO wp failed [ 0.494817] (stc): chnl_id list empty :4 [ 0.494830] (stk) : st_kim_start [ 0.599632] (stk) :ldisc_install = 1 [ 0.745121] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@0[0]' - status (0) [ 0.748468] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@1[0]' - status (0) [ 0.748588] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@2[0]' - status (0) [ 0.748692] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@3[0]' - status (0) [ 0.748839] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@4[0]' - status (0) [ 0.748940] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@5[0]' - status (0) [ 0.749042] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@6[0]' - status (0) [ 0.749181] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@7[0]' - status (0) [ 0.749279] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@8[0]' - status (0) [ 0.749384] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@9[0]' - status (0) [ 0.749481] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@10[0]' - status (0) [ 0.749581] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@11[0]' - status (0) [ 0.749682] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@12[0]' - status (0) [ 0.749784] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@13[0]' - status (0) [ 0.749881] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@14[0]' - status (0) [ 0.749981] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@15[0]' - status (0) [ 0.750086] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@16[0]' - status (0) [ 0.750184] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@17[0]' - status (0) [ 0.750321] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@18[0]' - status (0) [ 0.750427] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@19[0]' - status (0) [ 0.750536] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@20[0]' - status (0) [ 0.750637] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@21[0]' - status (0) [ 0.750737] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@22[0]' - status (0) [ 0.750838] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@23[0]' - status (0) [ 0.750941] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@24[0]' - status (0) [ 0.751044] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@25[0]' - status (0) [ 0.751148] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@26[0]' - status (0) [ 0.751253] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@27[0]' - status (0) [ 0.751358] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@28[0]' - status (0) [ 0.751478] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@29[0]' - status (0) [ 0.751582] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@30[0]' - status (0) [ 0.751693] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@31[0]' - status (0) [ 0.751800] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@32[0]' - status (0) [ 0.752289] ledtrig-cpu: registered to indicate activity on CPUs [ 0.754968] NET: Registered protocol family 10 [ 0.757607] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 0.758387] NET: Registered protocol family 17 [ 0.758410] can: controller area network core (rev 20120528 abi 9) [ 0.758497] NET: Registered protocol family 29 [ 0.758541] can: raw protocol (rev 20120528) [ 0.758546] can: broadcast manager protocol (rev 20161123 t) [ 0.758555] can: netlink gateway (rev 20130117) max_hops=1 [ 0.758711] can: SAE J1939 [ 0.759024] Key type dns_resolver registered [ 0.759249] omap_voltage_late_init: Voltage driver support not added [ 0.764895] omap-gpmc 50000000.gpmc: GPMC revision 6.0 [ 0.764915] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000 [ 0.764942] gpiochip_find_base: found new base at 510 [ 0.764989] gpio gpiochip4: (omap-gpmc): added GPIO chardev (254:4) [ 0.765412] gpiochip_setup_dev: registered GPIOs 510 to 511 on device: gpiochip4 (omap-gpmc) [ 0.766489] omap2-nand 8000000.nand: GPIO lookup for consumer rb [ 0.766501] omap2-nand 8000000.nand: using device tree for GPIO lookup [ 0.766535] of_get_named_gpiod_flags: parsed 'rb-gpios' property of node '/ocp/gpmc@50000000/nand@0,0[0]' - status (0) [ 0.766720] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xa3 [ 0.766724] nand: Micron MT29F8G08ABBCAH4 [ 0.766731] nand: 1024 MiB, SLC, erase size: 256 KiB, page size: 4096, OOB size: 224 [ 0.766773] nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme [ 0.766888] 14 ofpart partitions found on MTD device omap2-nand.0 [ 0.766893] Creating 14 MTD partitions on "omap2-nand.0": [ 0.766907] 0x000000000000-0x000000040000 : "NAND.SPL" [ 0.768320] 0x000000040000-0x000000080000 : "NAND.SPL.backup1" [ 0.769417] 0x000000080000-0x000000140000 : "NAND.u-boot" [ 0.770477] 0x000000140000-0x000000180000 : "NAND.u-boot-env" [ 0.771507] 0x000000180000-0x0000001c0000 : "NAND.u-boot-env.backup1" [ 0.772546] 0x0000001c0000-0x000000200000 : "NAND.inventory" [ 0.773565] 0x000000200000-0x000000240000 : "NAND.1.fdt" [ 0.774770] 0x000000240000-0x000000a00000 : "NAND.1.kernel" [ 0.776506] 0x000000a00000-0x000008a00000 : "NAND.1.file-system" [ 0.788758] 0x000008a00000-0x000008a40000 : "NAND.2.fdt" [ 0.789761] 0x000008a40000-0x000009200000 : "NAND.2.kernel" [ 0.791467] 0x000009200000-0x000011200000 : "NAND.2.file-system" [ 0.803748] 0x000011200000-0x00003c000000 : "NAND.file-data" [ 0.864804] 0x00003c000000-0x000040000000 : "NAND.nv-log" [ 0.894704] tps65910 0-002d: No interrupt support, no core IRQ [ 0.894914] tps65910-gpio tps65910-gpio: ti,en-gpio-sleep not specified [ 0.894943] gpiochip_find_base: found new base at 504 [ 0.894972] gpio gpiochip5: (tps65910): added GPIO chardev (254:5) [ 0.895273] gpiochip_setup_dev: registered GPIOs 504 to 509 on device: gpiochip5 (tps65910) [ 0.896653] vrtc: supplied by vbat [ 0.900386] vio: supplied by vbat [ 0.901854] vdd1: supplied by vbat [ 0.903630] vdd2: supplied by vbat [ 0.904115] vdd_core: Bringing 1325000uV into 1112500-1112500uV [ 0.906928] vdig1: supplied by vbat [ 0.908276] vdig2: supplied by vbat [ 0.909605] vpll: supplied by vbat [ 0.910463] random: fast init done [ 0.910954] vdac: supplied by vbat [ 0.912282] vaux1: supplied by vbat [ 0.913627] vaux2: supplied by vbat [ 0.914980] vaux33: supplied by vbat [ 0.916329] vmmc: supplied by vbat [ 0.917672] vbb: supplied by vbat [ 0.919580] lm75 0-0048: hwmon0: sensor 'tmp75' [ 0.919635] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz [ 0.920789] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 400 kHz [ 0.922362] ubi0: attaching mtd8 [ 1.207872] ubi0: scanning is finished [ 1.212889] ubi0: attached mtd8 (name "NAND.1.file-system", size 128 MiB) [ 1.212900] ubi0: PEB size: 262144 bytes (256 KiB), LEB size: 253952 bytes [ 1.212905] ubi0: min./max. I/O unit sizes: 4096/4096, sub-page size 1024 [ 1.212910] ubi0: VID header offset: 4096 (aligned 4096), data offset: 8192 [ 1.212914] ubi0: good PEBs: 512, bad PEBs: 0, corrupted PEBs: 0 [ 1.212919] ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128 [ 1.212925] ubi0: max/mean erase counter: 65/16, WL threshold: 4096, image sequence number: 1511323209 [ 1.212930] ubi0: available PEBs: 0, total reserved PEBs: 512, PEBs reserved for bad PEB handling: 80 [ 1.213356] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch0[0]' - status (0) [ 1.213385] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch1[0]' - status (0) [ 1.213400] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch2[0]' - status (0) [ 1.213414] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch3[0]' - status (0) [ 1.213428] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch4[0]' - status (0) [ 1.213443] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch5[0]' - status (0) [ 1.213462] of_get_named_gpiod_flags: parsed 'gpios' property of node '/input_keys/switch6[0]' - status (0) [ 1.213739] omap_gpio 44e07000.gpio: Could not set line 19 debounce to 300000 microseconds (-22) [ 1.213770] omap_gpio 44e07000.gpio: Could not set line 27 debounce to 300000 microseconds (-22) [ 1.214209] input: input_keys as /devices/platform/input_keys/input/input1 [ 1.214912] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 13:20:22 UTC (946732822) [ 1.215448] wifi-regulator: disabling [ 1.215572] ubi0: background thread "ubi_bgt0d" started, PID 99 [ 1.215711] ALSA device list: [ 1.215716] No soundcards found. [ 1.224553] UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 100 [ 1.251307] UBIFS (ubi0:0): recovery needed [ 1.334158] UBIFS (ubi0:0): recovery completed [ 1.334283] UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "rootfs" [ 1.334293] UBIFS (ubi0:0): LEB size: 253952 bytes (248 KiB), min./max. I/O unit sizes: 4096 bytes/4096 bytes [ 1.334302] UBIFS (ubi0:0): FS size: 106151936 bytes (101 MiB, 418 LEBs), journal size 9404416 bytes (8 MiB, 38 LEBs) [ 1.334307] UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB) [ 1.334317] UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID A7202D23-ED8F-417C-AE52-588F81F4D8CE, small LPT model [ 1.335915] VFS: Mounted root (ubifs filesystem) on device 0:14. [ 1.337388] devtmpfs: mounted [ 1.338849] Freeing unused kernel memory: 1024K [ 1.521196] systemd[1]: System time before build time, advancing clock. [ 1.604642] (stk) :ldisc installation timeout [ 1.604656] (stk) :ldisc_install = 0 [ 2.644685] (stk) : timed out waiting for ldisc to be un-installed [ 2.751751] (stk) :ldisc_install = 1 [ 3.186317] systemd-journald[112]: Received request to flush runtime journal from PID 1 [ 3.764588] (stk) :ldisc installation timeout [ 3.764606] (stk) :ldisc_install = 0 [ 4.686721] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec [ 4.804631] (stk) : timed out waiting for ldisc to be un-installed [ 4.912067] (stk) :ldisc_install = 1 [ 5.147413] ubi1: attaching mtd12 [ 5.781334] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2 [ 5.800169] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle [ 5.803219] PM: Cannot get wkup_m3_ipc handle [ 5.844723] omap-aes 53500000.aes: will run requests pump with realtime priority [ 5.867504] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle [ 5.867775] PM: Cannot get wkup_m3_ipc handle [ 5.869625] remoteproc remoteproc0: wkup_m3 is available [ 5.875378] PM: Cannot get wkup_m3_ipc handle [ 5.875468] remoteproc remoteproc0: powering up wkup_m3 [ 5.880833] omap-sham 53100000.sham: hw accel on OMAP rev 4.3 [ 5.924594] (stk) :ldisc installation timeout [ 5.924611] (stk) :ldisc_install = 0 [ 5.934006] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 224252 [ 5.934288] remoteproc remoteproc0: remote processor wkup_m3 is now up [ 5.934321] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = 0x192 [ 5.949181] PM: Cannot get wkup_m3_ipc handle [ 6.964585] (stk) : timed out waiting for ldisc to be un-installed [ 7.071628] (stk) :ldisc_install = 1 [ 8.085545] (stk) :ldisc installation timeout [ 8.085563] (stk) :ldisc_install = 0 [ 8.782835] PM: bootloader does not support rtc-only! [ 8.842272] am335x-phy-driver 47401300.usb-phy: GPIO lookup for consumer reset [ 8.842291] am335x-phy-driver 47401300.usb-phy: using device tree for GPIO lookup [ 8.842304] of_get_named_gpiod_flags: can't parse 'reset-gpios' property of node '/ocp/usb@47400000/usb-phy@47401300[0]' [ 8.842311] of_get_named_gpiod_flags: can't parse 'reset-gpio' property of node '/ocp/usb@47400000/usb-phy@47401300[0]' [ 8.842317] am335x-phy-driver 47401300.usb-phy: using lookup tables for GPIO lookup [ 8.842324] am335x-phy-driver 47401300.usb-phy: lookup for GPIO reset failed [ 8.842332] am335x-phy-driver 47401300.usb-phy: GPIO lookup for consumer vbus-detect [ 8.842336] am335x-phy-driver 47401300.usb-phy: using device tree for GPIO lookup [ 8.842343] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpios' property of node '/ocp/usb@47400000/usb-phy@47401300[0]' [ 8.842348] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpio' property of node '/ocp/usb@47400000/usb-phy@47401300[0]' [ 8.842352] am335x-phy-driver 47401300.usb-phy: using lookup tables for GPIO lookup [ 8.842357] am335x-phy-driver 47401300.usb-phy: lookup for GPIO vbus-detect failed [ 8.842455] 47401300.usb-phy supply vcc not found, using dummy regulator [ 8.885418] am335x-phy-driver 47401b00.usb-phy: GPIO lookup for consumer reset [ 8.885438] am335x-phy-driver 47401b00.usb-phy: using device tree for GPIO lookup [ 8.885451] of_get_named_gpiod_flags: can't parse 'reset-gpios' property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' [ 8.885458] of_get_named_gpiod_flags: can't parse 'reset-gpio' property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' [ 8.885464] am335x-phy-driver 47401b00.usb-phy: using lookup tables for GPIO lookup [ 8.885471] am335x-phy-driver 47401b00.usb-phy: lookup for GPIO reset failed [ 8.885479] am335x-phy-driver 47401b00.usb-phy: GPIO lookup for consumer vbus-detect [ 8.885484] am335x-phy-driver 47401b00.usb-phy: using device tree for GPIO lookup [ 8.885490] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpios' property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' [ 8.885495] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpio' property of node '/ocp/usb@47400000/usb-phy@47401b00[0]' [ 8.885500] am335x-phy-driver 47401b00.usb-phy: using lookup tables for GPIO lookup [ 8.885505] am335x-phy-driver 47401b00.usb-phy: lookup for GPIO vbus-detect failed [ 8.885602] 47401b00.usb-phy supply vcc not found, using dummy regulator [ 8.984294] musb-hdrc musb-hdrc.0: MUSB HDRC host driver [ 8.984343] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1 [ 9.035170] hub 1-0:1.0: USB hub found [ 9.035227] hub 1-0:1.0: 1 port detected [ 9.063775] musb-hdrc musb-hdrc.1: MUSB HDRC host driver [ 9.063822] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2 [ 9.115016] hub 2-0:1.0: USB hub found [ 9.118411] hub 2-0:1.0: 1 port detected [ 9.124863] (stk) : timed out waiting for ldisc to be un-installed [ 9.232090] (stk) :ldisc_install = 1 [ 9.959454] ubi1: scanning is finished [ 9.991279] ubi1: attached mtd12 (name "NAND.file-data", size 686 MiB) [ 9.991298] ubi1: PEB size: 262144 bytes (256 KiB), LEB size: 258048 bytes [ 9.991303] ubi1: min./max. I/O unit sizes: 4096/4096, sub-page size 1024 [ 9.991308] ubi1: VID header offset: 1024 (aligned 1024), data offset: 4096 [ 9.991312] ubi1: good PEBs: 2744, bad PEBs: 0, corrupted PEBs: 0 [ 9.991317] ubi1: user volume: 1, internal volumes: 1, max. volumes count: 128 [ 9.991324] ubi1: max/mean erase counter: 16/6, WL threshold: 4096, image sequence number: 1898721964 [ 9.991330] ubi1: available PEBs: 0, total reserved PEBs: 2744, PEBs reserved for bad PEB handling: 80 [ 9.991377] ubi2: attaching mtd13 [ 10.001131] ubi1: background thread "ubi_bgt1d" started, PID 222 [ 10.254578] (stk) :ldisc installation timeout [ 10.254595] (stk) :ldisc_install = 0 [ 10.336369] ubi2: scanning is finished [ 10.354577] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 235 [ 10.366812] ubi2: attached mtd13 (name "NAND.nv-log", size 64 MiB) [ 10.366830] ubi2: PEB size: 262144 bytes (256 KiB), LEB size: 258048 bytes [ 10.366836] ubi2: min./max. I/O unit sizes: 4096/4096, sub-page size 1024 [ 10.366840] ubi2: VID header offset: 1024 (aligned 1024), data offset: 4096 [ 10.366845] ubi2: good PEBs: 256, bad PEBs: 0, corrupted PEBs: 0 [ 10.366850] ubi2: user volume: 1, internal volumes: 1, max. volumes count: 128 [ 10.366857] ubi2: max/mean erase counter: 201/84, WL threshold: 4096, image sequence number: 1033295459 [ 10.366862] ubi2: available PEBs: 0, total reserved PEBs: 256, PEBs reserved for bad PEB handling: 80 [ 10.369888] ubi2: background thread "ubi_bgt2d" started, PID 237 [ 10.520866] UBIFS (ubi1:0): recovery needed [ 10.527375] UBIFS (ubi2:0): background thread "ubifs_bgt2_0" started, PID 242 [ 10.623977] UBIFS (ubi2:0): recovery needed [ 10.721289] UBIFS (ubi1:0): recovery completed [ 10.721403] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "data" [ 10.721413] UBIFS (ubi1:0): LEB size: 258048 bytes (252 KiB), min./max. I/O unit sizes: 4096 bytes/4096 bytes [ 10.721423] UBIFS (ubi1:0): FS size: 683827200 bytes (652 MiB, 2650 LEBs), journal size 9420800 bytes (8 MiB, 37 LEBs) [ 10.721427] UBIFS (ubi1:0): reserved for root: 0 bytes (0 KiB) [ 10.721437] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID 176624D0-5952-4B29-BE84-12F224232B33, small LPT model [ 10.816740] UBIFS (ubi2:0): recovery completed [ 10.816879] UBIFS (ubi2:0): UBIFS: mounted UBI device 2, volume 0, name "nvlog" [ 10.816889] UBIFS (ubi2:0): LEB size: 258048 bytes (252 KiB), min./max. I/O unit sizes: 4096 bytes/4096 bytes [ 10.816897] UBIFS (ubi2:0): FS size: 41803776 bytes (39 MiB, 162 LEBs), journal size 9031680 bytes (8 MiB, 35 LEBs) [ 10.816902] UBIFS (ubi2:0): reserved for root: 0 bytes (0 KiB) [ 10.816911] UBIFS (ubi2:0): media format: w4/r0 (latest is w4/r0), UUID 4F9C58EE-34EC-4655-A070-A91D30B8EECA, small LPT model [ 11.284698] (stk) : timed out waiting for ldisc to be un-installed [ 11.394524] (stk) :ldisc_install = 1 [ 12.406495] (stk) :ldisc installation timeout [ 12.406520] (stk) :ldisc_install = 0 [ 13.444792] (stk) : timed out waiting for ldisc to be un-installed [ 13.446850] Bluetooth: st_register failed -22 [ 172.124768] random: crng init done [29156.373794] musb-hdrc musb-hdrc.1: remove, state 4 [29156.373876] usb usb2: USB disconnect, device number 1 [29156.385792] musb-hdrc musb-hdrc.1: USB bus 2 deregistered [29156.389693] musb-hdrc musb-hdrc.0: remove, state 4 [29156.389763] usb usb1: USB disconnect, device number 1 [29156.404835] musb-hdrc musb-hdrc.0: USB bus 1 deregistered [29193.775348] musb-hdrc musb-hdrc.0: MUSB HDRC host driver [29193.775452] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1 [29193.783825] hub 1-0:1.0: USB hub found [29193.793213] hub 1-0:1.0: 1 port detected [29193.889831] musb-hdrc musb-hdrc.1: MUSB HDRC host driver [29193.889932] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2 [29193.924916] hub 2-0:1.0: USB hub found [29193.925096] hub 2-0:1.0: 1 port detected [29194.354835] usb 2-1: new full-speed USB device number 2 using musb-hdrc [29194.494827] usb 2-1: device descriptor read/64, error -71 [29194.755081] usb 2-1: device descriptor read/64, error -71 [29195.014837] usb 2-1: new full-speed USB device number 3 using musb-hdrc [29195.154830] usb 2-1: device descriptor read/64, error -71 [29195.414829] usb 2-1: device descriptor read/64, error -71 [29195.534984] usb usb2-port1: attempt power cycle [29196.014830] usb 2-1: new full-speed USB device number 4 using musb-hdrc [29196.594839] usb 2-1: new full-speed USB device number 5 using musb-hdrc [29229.664839] usb 2-1: new high-speed USB device number 6 using musb-hdrc [29229.852704] option 2-1:1.0: GSM modem (1-port) converter detected [29229.866673] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0 [29229.868396] option 2-1:1.1: GSM modem (1-port) converter detected [29229.875369] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1 [29229.877134] option 2-1:1.2: GSM modem (1-port) converter detected [29229.889778] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2 [29229.891537] option 2-1:1.3: GSM modem (1-port) converter detected [29229.895491] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3 [29229.914875] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device [29229.917297] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-musb-hdrc.1-1, WWAN/QMI device, 36:5f:f3:a4:5d:4a ~ # ~ # ~ # ~ # echo 0 > ctl:usb_vbus_en/brightness sh: can't create ctl:usb_vbus_en/brightness: nonexistent directory ~ # cd /sys/class/leds/ /sys/class/leds # echo 0 > ctl:usb_vbus_en/brightness /sys/class/leds # [29505.622588] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_vrise (80, <SessEnd), retry #3, port1 0008050f Jun 12 19:42:42 tms user.debug kernel: [29505.165155] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_host (89, <AValid), retry #1, port1 00000507 Jun 12 19:42:42 tms user.debug kernel: [29505.317731] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_vrise (81, <SessEnd), retry #2, port1 00000507 Jun 12 19:42:42 tms user.debug kernel: [29505.470159] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_vrise (81, <SessEnd), retry #3, port1 00000507 Jun 12 19:42:43 tms user.err kernel: [29505.622588] musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_vrise (80, <SessEnd), retry #3, port1 0008050f /sys/class/leds # /sys/class/leds #
