One thing that I forgot to mention is that this hotplugging workaround requires USB power management support in the kernel in order to work (Device Drivers → USB support → USB runtime power management (autosuspend) and wakeup).
Additional information on the USB -110 error:
I set usbcore.usbfs_snoop=1 as a kernel command line argument in uEnv.txt to gather some more detailed information. Here are the system log messages for a boot that gives the -110 error. Sorry for the large size of the log, but I felt it better to include everything than to accidentally cull out something that might end up being important.
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.8.11-bone16 (user@ubuntu) (gcc version 4.7.3 2013 0226 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #67 Fri May 10 22:39:14 EDT 2013
[ 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] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] On node 0 totalpages: 130816
[ 0.000000] free_area_init_node: node 0, pgdat c07c29a8, node_mem_map c0833000
[ 0.000000] Normal zone: 1024 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 129792 pages, LIFO batch:31
[ 0.000000] AM335X ES1.0 (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: 129792
[ 0.000000] Kernel command line: usbcore.usbfs_snoop=1 video=720x480-16@60 console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] __ex_table already sorted, skipping sort
[ 0.000000] allocated 1048576 bytes of page_cgroup
[ 0.000000] please try ‘cgroup_disable=memory’ option if you don’t want memory cgroups
[ 0.000000] Memory: 511MB = 511MB total
[ 0.000000] Memory: 509224k/509224k available, 15064k 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 : 0xe0800000 - 0xff000000 ( 488 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc070a718 (7178 kB)
[ 0.000000] .init : 0xc070b000 - 0xc074c6a4 ( 262 kB)
[ 0.000000] .data : 0xc074e000 - 0xc07c4dd8 ( 476 kB)
[ 0.000000] .bss : 0xc07c4dd8 - 0xc08324d4 ( 438 kB)
[ 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] Total of 128 interrupts on 1 active controller
[ 0.000000] OMAP clockevent source: GPTIMER1 at 24000000 Hz
[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[ 0.000000] OMAP clocksource: GPTIMER2 at 24000000 Hz
[ 0.000000] Console: colour dummy device 80x30
[ 0.000325] Calibrating delay loop… 365.94 BogoMIPS (lpj=356352)
[ 0.015466] pid_max: default: 32768 minimum: 301
[ 0.015619] Security Framework initialized
[ 0.015685] Mount-cache hash table entries: 512
[ 0.023117] Initializing cgroup subsys cpuacct
[ 0.023156] Initializing cgroup subsys memory
[ 0.023225] Initializing cgroup subsys blkio
[ 0.023388] CPU: Testing write buffer coherency: ok
[ 0.023849] Setting up static identity map for 0x804d2028 - 0x804d2080
[ 0.025576] devtmpfs: initialized
[ 0.084772] pinctrl core: initialized pinctrl subsystem
[ 0.084916] rstctl core: initialized rstctl subsystem
[ 0.085318] regulator-dummy: no parameters
[ 0.085712] NET: Registered protocol family 16
[ 0.086606] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.096167] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[ 0.096799] platform 49000000.edma: alias fck already exists
[ 0.096828] platform 49000000.edma: alias fck already exists
[ 0.096851] platform 49000000.edma: alias fck already exists
[ 0.097789] gpiochip_add: registered GPIOs 0 to 31 on device: gpio
[ 0.097913] OMAP GPIO hardware version 0.1
[ 0.099047] gpiochip_add: registered GPIOs 32 to 63 on device: gpio
[ 0.100117] gpiochip_add: registered GPIOs 64 to 95 on device: gpio
[ 0.101124] gpiochip_add: registered GPIOs 96 to 127 on device: gpio
[ 0.101670] of_get_named_gpio_flags exited with status 52
[ 0.101698] gpio-rctrl rstctl.3: loaded OK
[ 0.106043] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.108078] cpsw.0: No hwaddr in dt. Using c8:a0:30:bf:67:55 from efuse
[ 0.108108] cpsw.1: No hwaddr in dt. Using c8:a0:30:bf:67:57 from efuse
[ 0.116143] bio: create slab at 0
[ 0.125778] edma-dma-engine edma-dma-engine.0: TI EDMA DMA engine driver
[ 0.125977] of_get_named_gpio_flags: can’t parse gpios property
[ 0.126198] vmmcsd_fixed: 3300 mV
[ 0.128467] usbcore: registered new interface driver usbfs
[ 0.128572] usbcore: registered new interface driver hub
[ 0.128862] usbcore: registered new device driver usb
[ 0.130597] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 0.132657] DCDC1: at 1500 mV
[ 0.133639] vdd_mpu: 925 <–> 1325 mV at 1100 mV
[ 0.134567] vdd_core: 925 <–> 1150 mV at 1100 mV
[ 0.135518] LDO1: at 1800 mV
[ 0.136430] LDO2: at 3300 mV
[ 0.138078] LDO3: 1800 mV
[ 0.139028] LDO4: at 3300 mV
[ 0.139857] tps65217 0-0024: TPS65217 ID 0xe version 1.2
[ 0.140572] omap_i2c 44e0b000.i2c: unable to select pin group
[ 0.141249] omap_i2c 4819c000.i2c: bus 1 rev0.11 at 100 kHz
[ 0.143247] omap_i2c 4819c000.i2c: unable to select pin group
[ 0.143948] Advanced Linux Sound Architecture Driver Initialized.
[ 0.144820] NetLabel: Initializing
[ 0.144838] NetLabel: domain hash size = 128
[ 0.144849] NetLabel: protocols = UNLABELED CIPSOv4
[ 0.144950] NetLabel: unlabeled traffic allowed by default
[ 0.145239] Switching to clocksource gp_timer
[ 0.180702] NET: Registered protocol family 2
[ 0.181585] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.181724] TCP bind hash table entries: 4096 (order: 4, 81920 bytes)
[ 0.181892] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.181985] TCP: reno registered
[ 0.182011] UDP hash table entries: 256 (order: 1, 12288 bytes)
[ 0.182056] UDP-Lite hash table entries: 256 (order: 1, 12288 bytes)
[ 0.182475] NET: Registered protocol family 1
[ 0.183008] RPC: Registered named UNIX socket transport module.
[ 0.183027] RPC: Registered udp transport module.
[ 0.183038] RPC: Registered tcp transport module.
[ 0.183050] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.184076] CPU PMU: probing PMU on CPU 0
[ 0.184103] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available
[ 0.184588] omap2_mbox_probe: platform not supported
[ 0.419639] VFS: Disk quotas dquot_6.5.2
[ 0.419733] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.420569] NFS: Registering the id_resolver key type
[ 0.420765] Key type id_resolver registered
[ 0.420782] Key type id_legacy registered
[ 0.420851] fuse init (API version 7.20)
[ 0.421390] msgmni has been set to 994
[ 0.423190] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.423212] io scheduler noop registered
[ 0.423225] io scheduler deadline registered
[ 0.423254] io scheduler cfq registered (default)
[ 0.424540] tps65217-bl tps65217-bl: no platform data provided
[ 0.424634] tps65217-bl: probe of tps65217-bl failed with error -22
[ 0.425340] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.427440] omap_uart 44e09000.serial: did not get pins for uart0 error: -19
[ 0.427708] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88) is a OMAP UART0
[ 1.089079] console [ttyO0] enabled
[ 1.093600] [drm] Initialized drm 1.1.0 20060810
[ 1.107915] brd: module loaded
[ 1.116041] loop: module loaded
[ 1.119496] at24 0-0050: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 1.126785] at24 1-0054: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 1.134062] at24 1-0055: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 1.141388] at24 1-0056: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 1.148692] at24 1-0057: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 1.162577] bone-capemgr bone_capemgr.9: Baseboard: ‘A335BNLT,0A5A,1613BBBK3306’
[ 1.170377] bone-capemgr bone_capemgr.9: compatible-baseboard=ti,beaglebone-black
[ 1.205854] bone-capemgr bone_capemgr.9: slot #0: No cape found
[ 1.242959] bone-capemgr bone_capemgr.9: slot #1: No cape found
[ 1.280067] bone-capemgr bone_capemgr.9: slot #2: No cape found
[ 1.317177] bone-capemgr bone_capemgr.9: slot #3: No cape found
[ 1.323434] bone-capemgr bone_capemgr.9: slot #4: specific override
[ 1.330044] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 4
[ 1.338098] bone-capemgr bone_capemgr.9: slot #4: ‘Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G’
[ 1.348253] bone-capemgr bone_capemgr.9: slot #5: specific override
[ 1.354860] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 5
[ 1.362914] bone-capemgr bone_capemgr.9: slot #5: ‘Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI’
[ 1.373288] bone-capemgr bone_capemgr.9: loader: before slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.382183] bone-capemgr bone_capemgr.9: loader: check slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.390984] bone-capemgr bone_capemgr.9: initialized OK.
[ 1.396593] bone-capemgr bone_capemgr.9: loader: before slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.405370] bone-capemgr bone_capemgr.9: loader: check slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.415239] OneNAND driver initializing
[ 1.420384] usbcore: registered new interface driver cdc_ether
[ 1.426623] usbcore: registered new interface driver rndis_host
[ 1.432929] bone-capemgr bone_capemgr.9: loader: after slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.441722] bone-capemgr bone_capemgr.9: loader: after slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.450511] usbcore: registered new interface driver cdc_ncm
[ 1.456499] bone-capemgr bone_capemgr.9: slot #4: Requesting firmware ‘cape-bone-2g-emmc1.dtbo’ for board-name ‘Bone-LT-eMMC-2G’, version ‘00A0’
[ 1.470682] ehci_hcd: USB 2.0 ‘Enhanced’ Host Controller (EHCI) Driver
[ 1.477574] ehci_hcd: block sizes: qh 60 qtd 96 itd 160 sitd 96
[ 1.477720] ehci-platform: EHCI generic platform driver
[ 1.483259] bone-capemgr bone_capemgr.9: slot #4: dtbo ‘cape-bone-2g-emmc1.dtbo’ loaded; converting to live tree
[ 1.493996] bone-capemgr bone_capemgr.9: slot #5: Requesting firmware ‘cape-boneblack-hdmi-00A0.dtbo’ for board-name ‘Bone-Black-HDMI’, version ‘00A0’
[ 1.508220] ohci_hcd: USB 1.1 ‘Open’ Host Controller (OHCI) Driver
[ 1.514723] ohci_hcd: block sizes: ed 64 td 64
[ 1.515040] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 1.521613] bone-capemgr bone_capemgr.9: slot #4: #2 overlays
[ 1.527696] bone-capemgr bone_capemgr.9: slot #5: dtbo ‘cape-boneblack-hdmi-00A0.dtbo’ loaded; converting to live tree
[ 1.539299] musb-hdrc musb-hdrc.0.auto: pdev->id = 0
[ 1.544557] musb-hdrc musb-hdrc.0.auto: drivers/usb/musb/musb_dsps.c:462 dsps_musb_init: OK
[ 1.553631] bone-capemgr bone_capemgr.9: slot #4: Applied #2 overlays.
[ 1.560514] bone-capemgr bone_capemgr.9: loader: done slot-4 BB-BONE-EMMC-2G:00A0 (prio 1)
[ 1.569531] bone-capemgr bone_capemgr.9: slot #5: #4 overlays
[ 1.575644] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 1.575663] musb-hdrc: MHDRC RTL version 2.0
[ 1.575677] musb-hdrc: setup fifo_mode 4
[ 1.575702] musb-hdrc: 28/31 max ep, 16384/16384 memory
[ 1.575847] musb-hdrc musb-hdrc.0.auto: *** mode=3
[ 1.580908] musb-hdrc musb-hdrc.0.auto: *** power=250
[ 1.587873] platform 4830e000.fb: alias fck already exists
[ 1.595279] bone-capemgr bone_capemgr.9: slot #5: Applied #4 overlays.
[ 1.602180] bone-capemgr bone_capemgr.9: loader: done slot-5 BB-BONELT-HDMI:00A0 (prio 1)
[ 1.611447] musb-hdrc musb-hdrc.1.auto: pdev->id = 1
[ 1.616720] musb-hdrc musb-hdrc.1.auto: drivers/usb/musb/musb_dsps.c:462 dsps_musb_init: OK
[ 1.625520] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 1.625537] musb-hdrc: MHDRC RTL version 2.0
[ 1.625550] musb-hdrc: setup fifo_mode 4
[ 1.625571] musb-hdrc: 28/31 max ep, 16384/16384 memory
[ 1.625692] musb-hdrc musb-hdrc.1.auto: *** mode=1
[ 1.630750] musb-hdrc musb-hdrc.1.auto: *** power=250
[ 1.636070] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 1.642591] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 1
[ 1.650866] musb-hdrc musb-hdrc.1.auto: supports USB remote wakeup
[ 1.650985] usb usb1: default language 0x0409
[ 1.651036] usb usb1: udev 1, busnum 1, minor = 0
[ 1.651057] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.658205] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.665798] usb usb1: Product: MUSB HDRC host driver
[ 1.671025] usb usb1: Manufacturer: Linux 3.8.11-bone16 musb-hcd
[ 1.677341] usb usb1: SerialNumber: musb-hdrc.1.auto
[ 1.683194] usb usb1: usb_probe_device
[ 1.683220] usb usb1: configuration #1 chosen from 1 choice
[ 1.683285] usb usb1: adding 1-0:1.0 (config #1, interface 0)
[ 1.683481] hub 1-0:1.0: usb_probe_interface
[ 1.683502] hub 1-0:1.0: usb_probe_interface - got id
[ 1.683528] hub 1-0:1.0: USB hub found
[ 1.687525] hub 1-0:1.0: 1 port detected
[ 1.691663] hub 1-0:1.0: standalone hub
[ 1.691681] hub 1-0:1.0: individual port power switching
[ 1.691697] hub 1-0:1.0: no over-current protection
[ 1.691712] hub 1-0:1.0: Single TT
[ 1.691730] hub 1-0:1.0: TT requires at most 8 FS bit times (666 ns)
[ 1.691747] hub 1-0:1.0: power on to power good time: 10ms
[ 1.691783] hub 1-0:1.0: local power source is good
[ 1.691876] hub 1-0:1.0: enabling power on all ports
[ 1.692921] mousedev: PS/2 mouse device common for all mice
[ 1.700711] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc as rtc0
[ 1.708444] i2c /dev entries driver
[ 1.712933] Driver for 1-wire Dallas network protocol.
[ 1.719732] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 1.727243] cpuidle: using governor ladder
[ 1.731576] cpuidle: using governor menu
[ 1.736019] of_get_named_gpio_flags: can’t parse gpios property
[ 1.736035] of_get_named_gpio_flags: can’t parse gpios property
[ 1.736047] of_get_named_gpio_flags: can’t parse gpios property
[ 1.736080] omap_hsmmc mmc.4: of_parse_phandle_with_args of ‘reset’ failed
[ 1.743320] omap_hsmmc mmc.4: Failed to get rstctl; not using any
[ 1.749772] omap_hsmmc mmc.4: unable to select pin group
[ 1.755606] edma-dma-engine edma-dma-engine.0: allocated channel for 0:25
[ 1.762807] edma-dma-engine edma-dma-engine.0: allocated channel for 0:24
[ 1.770132] mmc.4 supply vmmc_aux not found, using dummy regulator
[ 1.776773] omap_hsmmc mmc.4: pins are not configured from the driver
[ 1.791920] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0000
[ 1.791990] hub 1-0:1.0: hub_suspend
[ 1.792030] usb usb1: bus auto-suspend, wakeup 1
[ 1.809499] of_get_named_gpio_flags: can’t parse gpios property
[ 1.809519] of_get_named_gpio_flags: can’t parse gpios property
[ 1.809532] of_get_named_gpio_flags: can’t parse gpios property
[ 1.809579] gpio-rctrl rstctl.3: gpio_rctrl_request eMMC_RSTn
[ 1.815794] omap_hsmmc mmc.5: Got rstctl (gpio:#0 name eMMC_RSTn) label:eMMC_RSTn
[ 1.823708] gpio-rctrl rstctl.3: gpio_rctrl_deassert eMMC_RSTn
[ 1.830157] edma-dma-engine edma-dma-engine.0: allocated channel for 0:3
[ 1.837304] edma-dma-engine edma-dma-engine.0: allocated channel for 0:2
[ 1.844787] mmc.5 supply vmmc_aux not found, using dummy regulator
[ 1.851433] omap_hsmmc mmc.5: pins are not configured from the driver
[ 1.865561] usb usb1: usb wakeup-resume
[ 1.865607] usb usb1: usb auto-resume
[ 1.865634] hub 1-0:1.0: hub_resume
[ 1.865681] hub 1-0:1.0: port 1: status 0301 change 0001
[ 1.886045] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8
[ 1.897765] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22
[ 1.905085] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single
[ 1.914095] leds-gpio gpio-leds.8: pins are not configured from the driver
[ 1.921377] of_get_named_gpio_flags exited with status 54
[ 1.921394] of_get_named_gpio_flags exited with status 55
[ 1.921411] of_get_named_gpio_flags exited with status 56
[ 1.921448] of_get_named_gpio_flags exited with status 53
[ 1.921664] of_get_named_gpio_flags exited with status 54
[ 1.921851] of_get_named_gpio_flags exited with status 55
[ 1.922065] of_get_named_gpio_flags exited with status 56
[ 1.922451] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.929223] edma-dma-engine edma-dma-engine.0: allocated channel for 0:36
[ 1.936477] omap-sham 53100000.sham: hw accel on OMAP rev 4.3
[ 1.944564] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2
[ 1.950915] edma-dma-engine edma-dma-engine.0: allocated channel for 0:5
[ 1.958026] mmc0: host does not support reading read-only switch. assuming write-enable.
[ 1.966578] edma-dma-engine edma-dma-engine.0: allocated channel for 0:6
[ 1.973722] hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0000
[ 1.973783] hub 1-0:1.0: port 1, status 0301, change 0000, 1.5 Mb/s
[ 1.974808] usbcore: registered new interface driver usbhid
[ 1.980737] usbhid: USB HID core driver
[ 1.984861] mmc0: new high speed SDHC card at address b368
[ 1.992657] of_get_named_gpio_flags exited with status 59
[ 1.994297] davinci_evm sound.13: nxp-hdmi-hifi <-> 48038000.mcasp mapping ok
[ 2.002199] mmcblk0: mmc0:b368 USD 7.46 GiB
[ 2.009165] mmcblk0: p1 p2
[ 2.014317] TCP: cubic registered
[ 2.019035] NET: Registered protocol family 10
[ 2.024985] NET: Registered protocol family 17
[ 2.030232] Key type dns_resolver registered
[ 2.034721] CAUTION: musb: Babble Interrupt Occurred
[ 2.040233] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 2.048321] ThumbEE CPU extension supported.
[ 2.052904] Registering SWP/SWPB emulation handler
[ 2.058985] registered taskstats version 1
[ 2.063492] [drm] init
[ 2.068449] of_get_named_gpio_flags: can’t parse gpios property
[ 2.068481] tilcdc 4830e000.fb: No power control GPIO
[ 2.073856] [drm] Maximum Bandwidth Value 83927040
[ 2.078915] [drm] Maximum Horizontal Pixel Width Value 1366pixels
[ 2.085334] [drm] Maximum Pixel Clock Value 126000KHz
[ 2.090648] [drm] Allowing Standard Monitor Modes: true
[ 2.096140] [drm] Allowing Non Audio Monitor Modes: false
[ 2.101880] usb 1-1: new low-speed USB device number 2 using musb-hdrc
[ 2.108878] [drm] loading module: slave
[ 2.144897] mmc1: BKOPS_EN bit is not set
[ 2.151653] mmc1: new high speed MMC card at address 0001
[ 2.157908] mmcblk1: mmc1:0001 MMC02G 1.78 GiB
[ 2.162905] mmcblk1boot0: mmc1:0001 MMC02G partition 1 1.00 MiB
[ 2.169456] mmcblk1boot1: mmc1:0001 MMC02G partition 2 1.00 MiB
[ 2.177816] mmcblk1: p1 p2
[ 2.183282] mmcblk1boot1: unknown partition table
[ 2.190252] mmcblk1boot0: unknown partition table
[ 2.229985] tilcdc 4830e000.fb: found TDA19988
[ 2.235361] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 2.242326] [drm] No driver support for vblank timestamp query.
[ 2.248708] [drm] BeagleSNES: cmdline mode for connector HDMI-A-1 720x480@60Hz
[ 2.256518] tilcdc 4830e000.fb: No connectors reported connected with modes
[ 2.263857] [drm] BeagleSNES - Resolution 720(720):480(480) 16(16)
[ 2.277128] Console: switching to colour frame buffer device 90x30
[ 2.287816] tilcdc 4830e000.fb: fb0: frame buffer device
[ 2.293499] tilcdc 4830e000.fb: registered panic notifier
[ 2.299297] [drm] Initialized tilcdc 1.0.0 20121205 on minor 0
[ 2.354325] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 2.360756] davinci_mdio 4a101000.mdio: detected phy mask fffffffe
[ 2.368307] libphy: 4a101000.mdio: probed
[ 2.372570] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver SMSC LAN8710/LAN8720
[ 2.382368] Detected MACID = c8:a0:30:bf:67:55
[ 2.387019] cpsw 4a100000.ethernet: NAPI disabled
[ 2.393698] omap_rtc 44e3e000.rtc: setting system clock to 2000-01-01 00:00:01 UTC (946684801)
[ 2.405512] ALSA device list:
[ 2.408651] #0: TI BeagleBone Black
[ 2.416943] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[ 2.424643] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[ 7.086532] EXT4-fs (mmcblk0p2): recovery complete
[ 7.112141] usb 1-1: khubd timed out on ep0in len=0/64
[ 7.591281] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 7.599860] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 7.632380] devtmpfs: mounted
[ 7.635875] Freeing init memory: 260K
[ 8.542179] init: ureadahead main process (79) terminated with status 5
[ 9.484638] udevd[147]: starting version 175
[ 11.710950] net eth0: initializing cpsw version 1.12 (0)
[ 11.713098] net eth0: phy found : id is : 0x7c0f1
[ 11.713117] libphy: PHY 4a101000.mdio:01 not found
[ 11.718197] net eth0: phy 4a101000.mdio:01 not found on slave 1
[ 11.743193] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 11.857639] EXT4-fs (mmcblk0p2): re-mounted. Opts: errors=remount-ro
[ 12.112207] usb 1-1: khubd timed out on ep0in len=0/64
[ 14.653366] init: plymouth-log main process (345) terminated with status 1
[ 15.419340] init: plymouth-upstart-bridge main process (364) terminated with status 1
[ 16.065159] init: plymouth-stop pre-start process (393) terminated with status 1
[ 16.245212] init: lxdm main process (404) terminated with status 127
[ 17.112152] usb 1-1: khubd timed out on ep0in len=0/64
[ 17.217571] usb 1-1: device descriptor read/64, error -110
[ 22.325034] usb 1-1: khubd timed out on ep0in len=0/64
[ 27.325030] usb 1-1: khubd timed out on ep0in len=0/64
[ 32.325037] usb 1-1: khubd timed out on ep0in len=0/64
[ 32.430465] usb 1-1: device descriptor read/64, error -110
[ 32.643348] usb 1-1: new low-speed USB device number 3 using musb-hdrc
[ 37.643389] usb 1-1: khubd timed out on ep0in len=0/64
[ 42.643384] usb 1-1: khubd timed out on ep0in len=0/64
[ 47.643402] usb 1-1: khubd timed out on ep0in len=0/64
[ 47.748824] usb 1-1: device descriptor read/64, error -110
[ 52.856274] usb 1-1: khubd timed out on ep0in len=0/64
[ 57.856271] usb 1-1: khubd timed out on ep0in len=0/64
[ 62.856270] usb 1-1: khubd timed out on ep0in len=0/64
[ 62.961719] usb 1-1: device descriptor read/64, error -110
[ 63.174596] usb 1-1: new low-speed USB device number 4 using musb-hdrc
[ 68.174634] usb 1-1: khubd timed out on ep0out len=0/0
[ 73.377762] usb 1-1: khubd timed out on ep0out len=0/0
[ 73.580846] usb 1-1: device not accepting address 4, error -110
[ 73.692175] usb 1-1: new low-speed USB device number 5 using musb-hdrc
[ 78.692217] usb 1-1: khubd timed out on ep0out len=0/0
[ 83.895334] usb 1-1: khubd timed out on ep0out len=0/0
[ 84.098439] usb 1-1: device not accepting address 5, error -110
[ 84.105097] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 84.111780] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[ 84.114113] usb usb1: opened by process 429: cat
[ 84.121624] hub 1-0:1.0: port 1 enable change, status 00000301
[ 84.121709] hub 1-0:1.0: hub_suspend
[ 84.121739] usb usb1: bus auto-suspend, wakeup 1
Andrew