OTG烧写失败--OKMX6UL-C工业级Nand版
板子：OKMX6UL-C工业级Nand版使用mfgtool升级下载提供的镜像，执行到Jumping to OS image步骤，就显示No Device Connected停止了。
串口打印信息为：
U-Boot 2015.04-g5d63276bfe-dirty (Jan 10 2017 - 15:40:43)
CPU: Freescale i.MX6UL rev1.1 at 396 MHz
CPU: Temperature 50 C
Reset cause: POR
Board: MX6UL 14x14 EVK
I2C: ready
DRAM:256 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Card did not respond to voltage select!
MMC init failed
Using default environment
Display: TFT43AB (480x272)
Video: 480x272x24
In: serial
Out: serial
Err: serial
MMC: no card present
Net: FEC1
Error: FEC1 address not set.
Boot from USB for mfgtools
Use default environment for mfgtools
Run bootcmd_mfg: run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
Hit any key to stop autoboot:0
Kernel image @ 0x80800000 [ 0x000000 - 0x622528 ]
## Loading init Ramdisk from Legacy Image at 83800000 ...
Image Name: fsl-image-mfgtool-initramfs-imx_
Image Type: ARM Linux RAMDisk Image (gzip compressed)
Data Size: 7485694 Bytes = 7.1 MiB
Load Address: 00000000
Entry Point:00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 83000000
Booting using the fdt blob at 0x83000000
Using Device Tree in place at 83000000, end 8300c5c9
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.14.38-6UL_ga-00003-g9b1d9f6 (liyue@developer-RH2485-V2) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #1 SMP PREEMPT Mon Feb 12 11:31:44 CST 2018
[ 0.000000] CPU: ARMv7 Processor revision 5 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine model: Freescale i.MX6 UltraLite 14x14 EVK Board
[ 0.000000] cma: CMA: reserved 64 MiB at 8c000000
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] PERCPU: Embedded 8 pages/cpu @8bdbf000 s8832 r8192 d15744 u32768
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.Total pages: 60928
[ 0.000000] Kernel command line: console=ttymxc0,115200 rdinit=/linuxrc cma=64m g_mass_storage.stall=0 g_mass_storage.removable=1 g_mass_storage.idVendor=0x066F g_mass_storage.idProduct=0x37FF g_mass_storage.iSerialNumber= clk_ignore_unused
[ 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: 158316K/245760K available (7922K kernel code, 481K rwdata, 2792K rodata, 396K init, 433K bss, 87444K 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 : 0x90800000 - 0xff000000 (1768 MB)
[ 0.000000] lowmem: 0x80000000 - 0x90000000 ( 256 MB)
[ 0.000000] pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
[ 0.000000] modules : 0x7f000000 - 0x7fe00000 (14 MB)
[ 0.000000] .text : 0x80008000 - 0x80a7ecf8 (10716 kB)
[ 0.000000] .init : 0x80a7f000 - 0x80ae2280 ( 397 kB)
[ 0.000000] .data : 0x80ae4000 - 0x80b5c760 ( 482 kB)
[ 0.000000] .bss : 0x80b5c76c - 0x80bc8cf4 ( 434 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000]RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] Switching to timer-based delay loop
[ 0.000019] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655765682ns
[ 0.002790] clocksource_of_init: no matching clocksources found
[ 0.003161] Console: colour dummy device 80x30
[ 0.003211] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
[ 0.003243] pid_max: default: 32768 minimum: 301
[ 0.003654] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.003683] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.005449] Initializing cgroup subsys net_cls
[ 0.005539] CPU: Testing write buffer coherency: ok
[ 0.006036] /cpus/cpu@0 missing clock-frequency property
[ 0.006075] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.006134] Setting up static identity map for 0x807855f8 - 0x80785650
[ 0.040766] Brought up 1 CPUs
[ 0.040801] SMP: Total of 1 processors activated (6.00 BogoMIPS).
[ 0.040819] CPU: All CPU(s) started in SVC mode.
[ 0.041821] devtmpfs: initialized
[ 0.053885] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.054675] pinctrl core: initialized pinctrl subsystem
[ 0.055639] regulator-dummy: no parameters
[ 0.061093] NET: Registered protocol family 16
[ 0.079588] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.081441] cpuidle: using governor ladder
[ 0.081473] cpuidle: using governor menu
[ 0.082299] Use WDOG1 as reset source
[ 0.101348] syscon 20c8000.anatop: regmap registered
[ 0.102091] vdd3p0: 2625 <--> 3400 mV at 3000 mV
[ 0.103004] cpu: 725 <--> 1450 mV at 1150 mV
[ 0.103922] vddsoc: 725 <--> 1450 mV at 1175 mV
[ 0.109339] syscon 20e4000.iomuxc-gpr: regmap registered
[ 0.116483] syscon 21ac000.romcp: regmap registered
[ 0.117974] syscon 21bc000.ocotp-ctrl: regmap registered
[ 0.125646] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.125676] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.129790] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[ 0.133374] 20dc000.gpc supply pu not found, using dummy regulator
[ 0.169673] bio: create slab <bio-0> at 0
[ 0.176611] mxs-dma 1804000.dma-apbh: initialized
[ 0.177597] can-3v3: 3300 mV
[ 0.178185] VSD_3V3: 3300 mV
[ 0.178973] usb_otg1_vbus: 5000 mV
[ 0.179546] vref-3v3: 3300 mV
[ 0.180898] gpio_dvfs: 1300 <--> 1400 mV at 1400 mV
[ 0.182430] i2c-core: driver using legacy suspend method
[ 0.182459] i2c-core: driver using legacy resume method
[ 0.183824] SCSI subsystem initialized
[ 0.185098] usbcore: registered new inte**ce driver usbfs
[ 0.185284] usbcore: registered new inte**ce driver hub
[ 0.185614] usbcore: registered new device driver usb
[ 0.190538] i2c i2c-0: IMX I2C adapter registered
[ 0.193143] i2c i2c-1: IMX I2C adapter registered
[ 0.193450] Linux video capture inte**ce: v2.00
[ 0.193651] pps_core: LinuxPPS API ver. 1 registered
[ 0.193673] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.193759] PTP clock support registered
[ 0.196615] MIPI CSI2 driver module loaded
[ 0.197183] Advanced Linux Sound Architecture Driver Initialized.
[ 0.199279] Bluetooth: Core ver 2.18
[ 0.199415] NET: Registered protocol family 31
[ 0.199440] Bluetooth: HCI device and connection manager initialized
[ 0.199480] Bluetooth: HCI socket layer initialized
[ 0.199515] Bluetooth: L2CAP socket layer initialized
[ 0.199628] Bluetooth: SCO socket layer initialized
[ 0.200637] cfg80211: Calling CRDA to update world regulatory domain
[ 0.202226] Switched to clocksource mxc_timer1
[ 0.228937] NET: Registered protocol family 2
[ 0.230961] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.231051] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.231143] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.231261] TCP: reno registered
[ 0.231298] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.231357] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.231961] NET: Registered protocol family 1
[ 0.232878] RPC: Registered named UNIX socket transport module.
[ 0.232911] RPC: Registered udp transport module.
[ 0.232932] RPC: Registered tcp transport module.
[ 0.232951] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.233482] Trying to unpack rootfs image as initramfs...
[ 1.637360] Freeing initrd memory: 7304K (83801000 - 83f23000)
[ 1.640295] imx rpmsg driver is registered.
[ 1.641990] Bus freq driver module loaded
[ 1.644311] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 1.664158] VFS: Disk quotas dquot_6.5.2
[ 1.664918] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.671039] NFS: Registering the id_resolver key type
[ 1.671149] Key type id_resolver registered
[ 1.671172] Key type id_legacy registered
[ 1.671262] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[ 1.673355] fuse init (API version 7.22)
[ 1.674661] msgmni has been set to 451
[ 1.683335] io scheduler noop registered
[ 1.683367] io scheduler deadline registered
[ 1.683879] io scheduler cfq registered (default)
[ 1.685011] imx-weim 21b8000.weim: Driver registered.
[ 1.690762] backlight.9 supply power not found, using dummy regulator
[ 1.694086] MIPI DSI driver module loaded
[ 1.698650] 21c8000.lcdif supply lcd not found, using dummy regulator
[ 1.699031] mxsfb 21c8000.lcdif: failed to find mxc display driver
[ 1.699836] mxsfb 21c8000.lcdif: initialized
[ 1.707418] imx-sdma 20ec000.sdma: no event needs to be remapped
[ 1.707625] imx-sdma 20ec000.sdma: loaded firmware 3.1
[ 1.716430] imx-sdma 20ec000.sdma: initialized
[ 1.717928] Serial: IMX driver
[ 1.718583] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58, base_baud = 5000000) is a IMX
[ 2.484259] console enabled
[ 2.489736] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 59, base_baud = 5000000) is a IMX
[ 2.499687] 21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 60, base_baud = 5000000) is a IMX
[ 2.509364] serial: Freescale lpuart driver
[ 2.517663] imx sema4 driver is registered.
[ 2.522061] Initialized drm 1.1.0 20060810
[ 2.527961] Initialized vivante 1.0.0 20120216 on minor 0
[ 2.556160] brd: module loaded
[ 2.571193] loop: module loaded
[ 2.578254] spi_gpio spi4.15: gpio-miso property not found, switching to no-rx mode
[ 2.597488] CAN device driver inte**ce
[ 2.604985] flexcan 2090000.can: device registered (reg_base=90968000, irq=142)
[ 2.615161] flexcan 2094000.can: device registered (reg_base=90970000, irq=143)
[ 2.624849] 20b4000.ethernet supply phy not found, using dummy regulator
[ 2.633014] pps pps0: new PPS source ptp0
[ 2.637550] fec 20b4000.ethernet (unregistered net_device): Invalid MAC address: 00:00:00:00:00:00
[ 2.646766] fec 20b4000.ethernet (unregistered net_device): Using random MAC address: 9e:05:73:cb:e9:49
[ 2.656979] libphy: fec_enet_mii_bus: probed
[ 2.677939] fec 20b4000.ethernet eth0: registered PHC device 0
[ 2.685691] 2188000.ethernet supply phy not found, using dummy regulator
[ 2.694060] pps pps1: new PPS source ptp1
[ 2.698521] fec 2188000.ethernet (unregistered net_device): Invalid MAC address: 00:00:00:00:00:00
[ 2.707742] fec 2188000.ethernet (unregistered net_device): Using random MAC address: 4e:12:f7:db:ba:72
[ 2.719258] fec 2188000.ethernet eth1: registered PHC device 1
[ 2.726887] PPP generic driver version 2.4.2
[ 2.731766] PPP BSD Compression module registered
[ 2.736594] PPP Deflate Compression module registered
[ 2.741866] usbcore: registered new inte**ce driver asix
[ 2.747508] usbcore: registered new inte**ce driver cdc_ether
[ 2.753564] usbcore: registered new inte**ce driver cdc_eem
[ 2.759493] usbcore: registered new inte**ce driver cdc_ncm
[ 2.765235] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 2.771797] ehci-mxc: Freescale On-Chip EHCI Host driver
[ 2.777612] usbcore: registered new inte**ce driver usb-storage
[ 2.784036] usbcore: registered new inte**ce driver usbserial
[ 2.790014] usbcore: registered new inte**ce driver usbserial_generic
[ 2.796740] usbserial: USB Serial support registered for generic
[ 2.802943] usbcore: registered new inte**ce driver ftdi_sio
[ 2.808839] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 2.816356] usbcore: registered new inte**ce driver option
[ 2.822066] usbserial: USB Serial support registered for GSM modem (1-port)
[ 2.829216] usbcore: registered new inte**ce driver pl2303
[ 2.834967] usbserial: USB Serial support registered for pl2303
[ 2.841088] usbcore: registered new inte**ce driver cdc_xr_usb_serial
[ 2.847693] xr_usb_serial_common: Exar USB UART (serial port) driver
[ 2.854249] usbcore: registered new inte**ce driver usb_ehset_test
[ 2.862927] 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
[ 2.877991] 2184200.usb supply vbus not found, using dummy regulator
[ 2.888342] ci_hdrc ci_hdrc.1: EHCI Host Controller
[ 2.893385] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[ 2.912328] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[ 2.919847] hub 1-0:1.0: USB hub found
[ 2.923847] hub 1-0:1.0: 1 port detected
[ 2.930115] mousedev: PS/2 mouse device common for all mice
[ 2.937880] input: 20cc000.snvs-pwrkey as /devices/soc0/soc.0/2000000.aips-bus/20cc000.snvs-pwrkey/input/input0
[ 2.948806] snvs_pwrkey 20cc000.snvs-pwrkey: i.MX snvs powerkey probed
[ 2.956360] edt_ft5x06 0-0038: touchscreen probe failed
[ 2.961660] edt_ft5x06: probe of 0-0038 failed with error -5
[ 2.969532] input: iMX6UL TouchScreen Controller as /devices/virtual/input/input2
[ 2.979176] <<-GTP-INFO->> GTP driver installing...
[ 2.984601] <<-GTP-INFO->> GTP Driver Version: V2.4<2014/11/28>
[ 2.990560] <<-GTP-INFO->> GTP Driver Built@11:31:15, Feb 12 2018
[ 2.996789] <<-GTP-INFO->> GTP I2C Address: 0x5d
[ 3.002550] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 3.009456] <<-GTP-ERROR->> GTP i2c test failed time 1.
[ 3.033362] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 3.040267] <<-GTP-ERROR->> GTP i2c test failed time 2.
[ 3.063357] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 3.070259] <<-GTP-ERROR->> GTP i2c test failed time 3.
[ 3.093328] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 3.100229] <<-GTP-ERROR->> GTP i2c test failed time 4.
[ 3.123545] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 3.130447] <<-GTP-ERROR->> GTP i2c test failed time 5.
[ 3.152270] <<-GTP-ERROR->> I2C read failed.
[ 3.156992] i2c-core: driver using legacy suspend method
[ 3.163348] i2c-core: driver using legacy resume method
[ 3.173253] rtc-rx8010 0-0032: Update timer was detected
[ 3.181455] rtc-rx8010 0-0032: rtc core: registered rx8010 as rtc0
[ 3.189257] snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc1
[ 3.197956] i2c /dev entries driver
[ 3.202887] IR NEC protocol handler initialized
[ 3.207458] IR RC5(x) protocol handler initialized
[ 3.212333] IR RC6 protocol handler initialized
[ 3.216891] IR JVC protocol handler initialized
[ 3.221443] IR Sony protocol handler initialized
[ 3.226118] IR RC5 (streamzap) protocol handler initialized
[ 3.231716] IR SANYO protocol handler initialized
[ 3.236477] IR MCE Keyboard/mouse protocol handler initialized
[ 3.242516] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[ 3.252186] pxp-v4l2 pxp_v4l2.10: initialized
[ 3.257260] usbcore: registered new inte**ce driver uvcvideo
[ 3.263113] USB Video Class driver (1.1.1)
[ 3.268368] i2c-core: driver using legacy suspend method
[ 3.274659] i2c-core: driver using legacy resume method
[ 3.281853] imx2-wdt 20bc000.wdog: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0)
[ 3.290489] Bluetooth: HCI UART driver ver 2.2
[ 3.295031] Bluetooth: HCI H4 protocol initialized
[ 3.299853] Bluetooth: HCI BCSP protocol initialized
[ 3.304875] Bluetooth: HCIATH3K protocol initialized
[ 3.310087] usbcore: registered new inte**ce driver bcm203x
[ 3.316253] usbcore: registered new inte**ce driver btusb
[ 3.321959] usbcore: registered new inte**ce driver ath3k
[ 3.327732] usbcore: registered new inte**ce driver rtk_btusb
[ 3.334250] sdhci: Secure Digital Host Controller Inte**ce driver
[ 3.340462] sdhci: Copyright(c) Pierre Ossman
[ 3.344897] sdhci-pltfm: SDHCI platform and OF driver helper
[ 3.354258] mmc0: no vqmmc regulator found
[ 3.402368] mmc0: SDHCI controller on 2190000.usdhc using ADMA
[ 3.414052] hub 1-1:1.0: USB hub found
[ 3.422415] hub 1-1:1.0: 4 ports detected
[ 3.470375] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
[ 3.476831] nand: Micron MT29F2G08ABAEAWP
[ 3.480893] nand: 256MiB, SLC, page size: 2048, OOB size: 64
[ 3.489544] gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
[ 3.496622] Scanning device for bad blocks
[ 3.785685] 6 ofpart partitions found on MTD device gpmi-nand
[ 3.791477] Creating 6 MTD partitions on "gpmi-nand":
[ 3.796613] 0x000000000000-0x000000400000 : "boot"
[ 3.804265] 0x000000400000-0x000000600000 : "logo"
[ 3.811735] 0x000000600000-0x000000700000 : "ENV"
[ 3.819192] 0x000000700000-0x000000a00000 : "DTB"
[ 3.826726] 0x000000a00000-0x000001200000 : "kernel"
[ 3.834628] 0x000001200000-0x000010000000 : "rootfs"
[ 3.842770] gpmi-nand 1806000.gpmi-nand: driver registered.
[ 3.853009] usbcore: registered new inte**ce driver usbhid
[ 3.858626] usbhid: USB HID core driver
[ 3.876271] fsl-asrc 2034000.asrc: driver registered
[ 3.891039] snd-soc-dummy snd-soc-dummy: ASoC: Failed to create platform debugfs directory
[ 3.900612] imx-wm8960 sound.14: wm8960-hifi <-> 202c000.sai mapping ok
[ 3.908947] imx-wm8960 sound.14: snd-soc-dummy-dai <-> 2034000.asrc mapping ok
[ 3.916494] imx-wm8960 sound.14: wm8960-hifi <-> 202c000.sai mapping ok
[ 3.934568] NET: Registered protocol family 26
[ 3.939071] Netfilter messages via NETLINK v0.30.
[ 3.943930] nfnl_acct: registering with nfnetlink.
[ 3.948885] nf_conntrack version 0.5.0 (3611 buckets, 14444 max)
[ 3.956269] ctnetlink v0.93: registering with nfnetlink.
[ 3.961946] nf_tables: (c) 2007-2009 Patrick McHardy <kaber@trash.net>
[ 3.968600] nf_tables_compat: (c) 2012 Pablo Neira Ayuso <pablo@netfilter.org>
[ 3.976363] xt_time: kernel timezone is -0000
[ 3.981468] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 3.987338] ipt_CLUSTERIP: ClusterIP Version 0.8 loaded successfully
[ 3.993908] arp_tables: (C) 2002 David S. Miller
[ 3.998681] TCP: cubic registered
[ 4.003507] NET: Registered protocol family 10
[ 4.010182] sit: IPv6 over IPv4 tunneling driver
[ 4.016670] NET: Registered protocol family 17
[ 4.021193] can: controller area network core (rev 20120528 abi 9)
[ 4.027685] NET: Registered protocol family 29
[ 4.032358] can: raw protocol (rev 20120528)
[ 4.036665] can: broadcast manager protocol (rev 20120528 t)
[ 4.042521] can: netlink gateway (rev 20130117) max_hops=1
[ 4.048689] Bluetooth: RFCOMM TTY layer initialized
[ 4.053831] Bluetooth: RFCOMM socket layer initialized
[ 4.059058] Bluetooth: RFCOMM ver 1.11
[ 4.062953] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 4.068299] Bluetooth: BNEP filters: protocol multicast
[ 4.073623] Bluetooth: BNEP socket layer initialized
[ 4.078619] Bluetooth: HIDP (Human Inte**ce Emulation) ver 1.2
[ 4.084626] Bluetooth: HIDP socket layer initialized
[ 4.089735] 8021q: 802.1Q VLAN Support v1.8
[ 4.094147] Key type dns_resolver registered
[ 4.100450] cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)
[ 4.126465] gpio_dvfs: disabling
[ 4.129742] vref-3v3: disabling
[ 4.133032] usb_otg1_vbus: disabling
[ 4.136642] VSD_3V3: disabling
[ 4.139721] can-3v3: disabling
[ 4.143368] regulator-dummy: disabling
[ 4.147617] imx mcc test is registered.
[ 4.153611] rtc-rx8010 0-0032: setting system clock to 1970-01-01 00:28:35 UTC (1715)
[ 4.181445] clk: Not disabling unused clocks
[ 4.185853] ALSA device list:
[ 4.188846] #0: wm8960-audio
[ 4.193226] Freeing unused kernel memory: 396K (80a7f000 - 80ae2000)
Starting UTP
uuc 0.5
UTP: Waiting for device to appear
[ 24.042410] random: nonblocking pool is initialized
您好：
您的底板是我们的还是您自己开发的去过是您自己开发的建议您开一下OTG口的id线，看看是否被拉低了
如果是我们标准的底板，那您装个刷驱动的软件监控一下驱动，在卡住的时候看一下驱动是否正常，不正常的话刷一下驱动
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