Re: pandaboard usb ethernet failed to connect to network

Re: pandaboard usb ethernet failed to connect to network

[Roger Quadros]

Hi,

On 07/22/2013 11:17 AM, 菲 徐 wrote:
> Hi all:
> 
> I met a problem about USB Ethernet on panda board with kernel 3.10 .  USB Ethernet can be detected  when device tree enabled but failed to connect to network.

We don't yet support USB Host on panda with DT boot on 3.10.  It should work with non-DT boot.

It will work on 3.11-rc1 with this patch on top https://lkml.org/lkml/2013/6/18/492

Hopefully it should work out of the box from 3.11-rc2 onwards.

cheers,
-roger
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Re: pandaboard usb ethernet failed to connect to network

[Roger Quadros]

Hi,

Please don't drop mailing list from cc.

On 07/22/2013 11:27 AM, xufei_wh@hotmail.com wrote:
> Hi roger:
>  Do you mean it works from 3.11-rc2.  But I've tested with 3.11-rc2,  there is the same problem.  
>  Should I have to use 3.11-rc1 with your patch.

OK. In your earlier mail you mentioned 3.10.

Looks like that patch didn't go in 3.11-rc2. So can you please try
with the patch on top of 3.11-rc2?

cheers,
-roger

> 
> ------------------------------------------------------------------------------------------------------------------------------
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Linux version 3.11.0-rc2 (root@localhost.localdomain) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #2 SMP Mon Jul 22 14:34:58 CST 2013
> [    0.000000] CPU: ARMv7 Processor [411fc093] revision 3 (ARMv7), cr=10c53c7d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
> [    0.000000] Machine: Generic OMAP4 (Flattened Device Tree), model: TI OMAP4 PandaBoard
> [    0.000000] cma: CMA: reserved 16 MiB at ae800000
> [    0.000000] Memory policy: ECC disabled, Data cache writealloc
> [    0.000000] OMAP4430 ES2.3
> [    0.000000] PERCPU: Embedded 9 pages/cpu @c160f000 s14144 r8192 d14528 u36864
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 246032
> [    0.000000] Kernel command line: console=ttyO2,115200n8 mem=456M@0x80000000 mem=512M@0xA0000000 root=/dev/nfs nfsroot=10.38.58.209:/srv/rootfs-panda rw ip=10.38.58.246:::::eth0 rootdelay=2
> [    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: 950788K/990208K available (5759K kernel code, 614K rwdata, 1944K rodata, 381K init, 5522K bss, 39420K reserved, 269312K highmem)
> [    0.000000] Virtual kernel memory layout:
> [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> [    0.000000]     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
> [    0.000000]     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
> [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
> [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
> [    0.000000]       .text : 0xc0008000 - 0xc078e124   (7705 kB)
> [    0.000000]       .init : 0xc078f000 - 0xc07ee740   ( 382 kB)
> [    0.000000]       .data : 0xc07f0000 - 0xc0889a80   ( 615 kB)
> [    0.000000]        .bss : 0xc0889a80 - 0xc0dee5b0   (5523 kB)
> [    0.000000] Hierarchical RCU implementation.
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] OMAP clockevent source: timer1 at 32768 Hz
> [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
> [    0.000000] OMAP clocksource: 32k_counter at 32768 Hz
> [    0.000000] smp_twd: clock not found -2
> [    0.000000] Console: colour dummy device 80x30
> [    0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
> [    0.000000] ... MAX_LOCKDEP_SUBCLASSES:  8
> [    0.000000] ... MAX_LOCK_DEPTH:          48
> [    0.000000] ... MAX_LOCKDEP_KEYS:        8191
> [    0.000000] ... CLASSHASH_SIZE:          4096
> [    0.000000] ... MAX_LOCKDEP_ENTRIES:     16384
> [    0.000000] ... MAX_LOCKDEP_CHAINS:      32768
> [    0.000000] ... CHAINHASH_SIZE:          16384
> [    0.000000]  memory used by lock dependency info: 3695 kB
> [    0.000000]  per task-struct memory footprint: 1152 bytes
> [    0.001922] Calibrating delay loop... 1191.11 BogoMIPS (lpj=5955584)
> [    0.079620] pid_max: default: 32768 minimum: 301
> [    0.080352] Security Framework initialized
> [    0.080596] Mount-cache hash table entries: 512
> [    0.096557] CPU: Testing write buffer coherency: ok
> [    0.098632] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> [    0.098663] Calibrating local timer... 298.93MHz.
> [    0.149749] Setting up static identity map for 0xc057adc0 - 0xc057ae30
> [    0.149871] L310 cache controller enabled
> [    0.149902] l2x0: 16 ways, CACHE_ID 0x410000c4, AUX_CTRL 0x7e470000, Cache size: 1048576 B
> [    0.155456] CPU1: Booted secondary processor
> [    0.189544] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
> [    0.190155] Brought up 2 CPUs
> [    0.190185] SMP: Total of 2 processors activated (2382.23 BogoMIPS).
> [    0.190185] CPU: All CPU(s) started in SVC mode.
> [    0.193023] devtmpfs: initialized
> [    0.274963] pinctrl core: initialized pinctrl subsystem
> [    0.278717] regulator-dummy: no parameters
> [    0.282470] NET: Registered protocol family 16
> [    0.291381] DMA: preallocated 256 KiB pool for atomic coherent allocations
> [    0.380187] OMAP GPIO hardware version 0.1
> [    0.394531] omap-gpmc 50000000.gpmc: error: clk_get
> [    0.394592] omap-gpmc: probe of 50000000.gpmc failed with error -2
> [    0.427581] No ATAGs?
> [    0.427642] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
> [    0.427642] hw-breakpoint: maximum watchpoint size is 4 bytes.
> [    0.432128] OMAP DMA hardware revision 0.0
> [    0.435302] ARM PMU: not yet supported on OMAP4430 due to missing CTI driver
> [    0.484527] bio: create slab <bio-0> at 0
> [    0.487884] edma-dma-engine edma-dma-engine.0: Can't allocate PaRAM dummy slot
> [    0.487945] edma-dma-engine: probe of edma-dma-engine.0 failed with error -5
> [    0.551391] omap-dma-engine 4a056000.dma-controller: OMAP DMA engine driver
> [    0.553649] hsusb1_reset: 3300 mV 
> [    0.554687] hsusb1_vbus: 3300 mV 
> [    0.561767] SCSI subsystem initialized
> [    0.563568] usbcore: registered new interface driver usbfs
> [    0.563934] usbcore: registered new interface driver hub
> [    0.564453] usbcore: registered new device driver usb
> [    0.567565] omap_i2c 48070000.i2c: could not find pctldev for node /ocp/pinmux@4a100040/pinmux_i2c1_pins, deferring probe
> [    0.567596] platform 48070000.i2c: Driver omap_i2c requests probe deferral
> [    0.567687] omap_i2c 48072000.i2c: could not find pctldev for node /ocp/pinmux@4a100040/pinmux_i2c2_pins, deferring probe
> [    0.567718] platform 48072000.i2c: Driver omap_i2c requests probe deferral
> [    0.567779] omap_i2c 48060000.i2c: could not find pctldev for node /ocp/pinmux@4a100040/pinmux_i2c3_pins, deferring probe
> [    0.567810] platform 48060000.i2c: Driver omap_i2c requests probe deferral
> [    0.567871] omap_i2c 48350000.i2c: could not find pctldev for node /ocp/pinmux@4a100040/pinmux_i2c4_pins, deferring probe
> [    0.567901] platform 48350000.i2c: Driver omap_i2c requests probe deferral
> [    0.574890] Switched to clocksource 32k_counter
> [    0.695770] NET: Registered protocol family 2
> [    0.697845] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
> [    0.698242] TCP bind hash table entries: 8192 (order: 6, 294912 bytes)
> [    0.701354] TCP: Hash tables configured (established 8192 bind 8192)
> [    0.701660] TCP: reno registered
> [    0.701721] UDP hash table entries: 512 (order: 3, 40960 bytes)
> [    0.702148] UDP-Lite hash table entries: 512 (order: 3, 40960 bytes)
> [    0.703765] NET: Registered protocol family 1
> [    0.705413] RPC: Registered named UNIX socket transport module.
> [    0.705413] RPC: Registered udp transport module.
> [    0.705444] RPC: Registered tcp transport module.
> [    0.705444] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [    0.709838] NetWinder Floating Point Emulator V0.97 (double precision)
> [    0.905731] bounce pool size: 64 pages
> [    0.906494] VFS: Disk quotas dquot_6.5.2
> [    0.906768] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> [    0.909515] NFS: Registering the id_resolver key type
> [    0.909973] Key type id_resolver registered
> [    0.909973] Key type id_legacy registered
> [    0.910125] jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
> [    0.910766] msgmni has been set to 1363
> [    0.914276] io scheduler noop registered
> [    0.914306] io scheduler deadline registered
> [    0.914398] io scheduler cfq registered (default)
> [    0.916503] pinctrl-single 4a100040.pinmux: 203 pins at pa fc100040 size 406
> [    0.917144] pinctrl-single 4a31e040.pinmux: 28 pins at pa fc31e040 size 56
> [    0.920989] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    0.926879] omap_uart 4806a000.serial: did not get pins for uart0 error: -19
> [    0.928100] 4806a000.serial: ttyO0 at MMIO 0x4806a000 (irq = 104) is a OMAP UART0
> [    0.930053] omap_uart 4806c000.serial: did not get pins for uart1 error: -19
> [    0.930480] 4806c000.serial: ttyO1 at MMIO 0x4806c000 (irq = 105) is a OMAP UART1
> [    0.931640] omap_uart 48020000.serial: did not get pins for uart2 error: -19
> [    0.932067] 48020000.serial: ttyO2 at MMIO 0x48020000 (irq = 106) is a OMAP UART2
> [    1.703094] console [ttyO2] enabled
> [    1.708129] omap_uart 4806e000.serial: did not get pins for uart3 error: -19
> [    1.716033] 4806e000.serial: ttyO3 at MMIO 0x4806e000 (irq = 102) is a OMAP UART3
> [    1.751525] brd: module loaded
> [    1.770568] loop: module loaded
> [    1.779632] mtdoops: mtd device (mtddev=name/number) must be supplied
> [    1.798187] usbcore: registered new interface driver asix
> [    1.804290] usbcore: registered new interface driver ax88179_178a
> [    1.811157] usbcore: registered new interface driver cdc_ether
> [    1.817779] usbcore: registered new interface driver r815x
> [    1.823974] usbcore: registered new interface driver smsc95xx
> [    1.830474] usbcore: registered new interface driver net1080
> [    1.836914] usbcore: registered new interface driver cdc_subset
> [    1.843536] usbcore: registered new interface driver zaurus
> [    1.849945] usbcore: registered new interface driver cdc_ncm
> [    1.857238] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    1.864227] ehci-omap: OMAP-EHCI Host Controller driver
> [    1.940185] ehci-omap 4a064c00.ehci: EHCI Host Controller
> [    1.948303] ehci-omap 4a064c00.ehci: new USB bus registered, assigned bus number 1
> [    1.958343] ehci-omap 4a064c00.ehci: irq 109, io mem 0x4a064c00
> [    1.984863] ehci-omap 4a064c00.ehci: USB 2.0 started, EHCI 1.00
> [    1.992004] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
> [    1.999267] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> [    2.006958] usb usb1: Product: EHCI Host Controller
> [    2.012145] usb usb1: Manufacturer: Linux 3.11.0-rc2 ehci_hcd
> [    2.018280] usb usb1: SerialNumber: 4a064c00.ehci
> [    2.027557] hub 1-0:1.0: USB hub found
> [    2.031646] hub 1-0:1.0: 3 ports detected
> [    2.039459] usbcore: registered new interface driver cdc_wdm
> [    2.046325] usbcore: registered new interface driver usb-storage
> [    2.053100] usbcore: registered new interface driver usbtest
> [    2.060821] mousedev: PS/2 mouse device common for all mice
> [    2.071472] i2c /dev entries driver
> [    2.075561] Driver for 1-wire Dallas network protocol.
> [    2.086029] omap_wdt: OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
> [    2.096466] omap-dma-engine 4a056000.dma-controller: allocating channel for 62
> [    2.104187] omap-dma-engine 4a056000.dma-controller: allocating channel for 61
> [    2.111999] omap_hsmmc 4809c000.mmc: vmmc regulator missing
> [    2.118255] omap-dma-engine 4a056000.dma-controller: freeing channel for 61
> [    2.125671] omap-dma-engine 4a056000.dma-controller: freeing channel for 62
> [    2.133148] platform 4809c000.mmc: Driver omap_hsmmc requests probe deferral
> [    2.141387] omap-dma-engine 4a056000.dma-controller: allocating channel for 60
> [    2.149108] omap-dma-engine 4a056000.dma-controller: allocating channel for 59
> [    2.156890] omap_hsmmc 480d5000.mmc: vmmc regulator missing
> [    2.162841] omap-dma-engine 4a056000.dma-controller: freeing channel for 59
> [    2.170288] omap-dma-engine 4a056000.dma-controller: freeing channel for 60
> [    2.182464] ledtrig-cpu: registered to indicate activity on CPUs
> [    2.190063] usbcore: registered new interface driver usbhid
> [    2.196014] usbhid: USB HID core driver
> [    2.201171] oprofile: no performance counters
> [    2.207733] oprofile: using timer interrupt.
> [    2.212982] TCP: cubic registered
> [    2.216552] Initializing XFRM netlink socket
> [    2.221221] NET: Registered protocol family 17
> [    2.226043] NET: Registered protocol family 15
> [    2.231140] Key type dns_resolver registered
> [    2.235839] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
> [    2.245574] Power Management for TI OMAP4+ devices.
> [    2.250823] Power Management for TI OMAP4.
> [    2.255218] OMAP4 PM: u-boot >= v2012.07 is required for full PM support
> [    2.262542] ThumbEE CPU extension supported.
> [    2.274932] omap_i2c 48070000.i2c: bus 0 rev0.10 at 400 kHz
> [    2.286071] Skipping twl internal clock init and using bootloader value (unknown osc rate)
> [    2.298095] twl 0-0048: PIH (irq 39) chaining IRQs 416..436
> [    2.306488] twl_rtc rtc.10: Power up reset detected.
> [    2.312835] twl_rtc rtc.10: Enabling TWL-RTC
> [    2.322723] twl_rtc rtc.10: rtc core: registered rtc.10 as rtc0
> [    2.332244] VAUX1_6030: 1000 <--> 3000 mV at 1800 mV 
> [    2.340423] VAUX2_6030: 1200 <--> 2800 mV at 1800 mV 
> [    2.348266] VAUX3_6030: 1000 <--> 3000 mV at 1200 mV 
> [    2.356079] VMMC: 1200 <--> 3000 mV at 3000 mV 
> [    2.363220] VPP: 1800 <--> 2500 mV at 1900 mV 
> [    2.370300] VUSIM: 1200 <--> 2900 mV at 1800 mV 
> [    2.377258] VDAC: 1800 mV 
> [    2.381835] VANA: 2100 mV 
> [    2.386871] VCXIO: 1800 mV 
> [    2.391601] VUSB: 3300 mV 
> [    2.396759] V1V8: 1800 mV 
> [    2.401763] V2V1: 2100 mV 
> [    2.407684] usb 1-1: new high-speed USB device number 2 using ehci-omap
> [    2.428192] omap_i2c 48072000.i2c: bus 1 rev0.10 at 400 kHz
> [    2.436584] omap_i2c 48060000.i2c: bus 2 rev0.10 at 100 kHz
> [    2.446136] omap_i2c 48350000.i2c: bus 3 rev0.10 at 400 kHz
> [    2.452941] omap-dma-engine 4a056000.dma-controller: allocating channel for 62
> [    2.460693] omap-dma-engine 4a056000.dma-controller: allocating channel for 61
> [    2.472412] omap_hsmmc 4809c000.mmc: pins are not configured from the driver
> [    2.529968] twl_rtc rtc.10: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
> [    2.585601] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
> [    2.592773] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> [    2.602966] hub 1-1:1.0: USB hub found
> [    2.607299] hub 1-1:1.0: 5 ports detected
> [    2.720733] mmc0: host does not support reading read-only switch. assuming write-enable.
> [    2.732025] mmc0: new high speed SDHC card at address 1234
> [    2.740447] mmcblk0: mmc0:1234 SA04G 3.67 GiB 
> [    2.751312]  mmcblk0: p1 p2
> [    2.904937] usb 1-1.1: new high-speed USB device number 3 using ehci-omap
> [    3.040222] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
> [    3.047576] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> [    3.059692] smsc95xx v1.0.4
> [    3.719573] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-4a064c00.ehci-1.1, smsc95xx USB 2.0 Ethernet, ea:6e:f5:1a:32:8b
> [    6.476684] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
> [    9.224060] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
> [    9.258178] IP-Config: Guessing netmask 255.0.0.0
> [    9.258178] IP-Config: Complete:
> [    9.267089]      device=eth0, hwaddr=ea:6e:f5:1a:32:8b, ipaddr=10.38.58.246, mask=255.0.0.0, gw=255.255.255.255
> [    9.277923]      host=10.38.58.246, domain=, nis-domain=(none)
> [    9.284149]      bootserver=255.255.255.255, rootserver=10.38.58.209, rootpath=
> [    9.294799] Waiting 2 sec before mounting root device...
> [    9.304931] smsc95xx 1-1.1:1.0 eth0: Failed to write reg index 0x00000114: -71
> [    9.312744] smsc95xx 1-1.1:1.0 eth0: Error writing MII_ADDR
> [    9.322875] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -71
> [    9.330505] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
> [    9.336730] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
> [    9.347839] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -71
> [    9.355529] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
> [    9.361724] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
> [    9.372772] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -71
> [    9.380432] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
> [    9.386596] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
> [    9.397735] smsc95xx 1-1.1:1.0 eth0: Failed to read reg index 0x00000114: -71
> [    9.405395] smsc95xx 1-1.1:1.0 eth0: Error reading MII_ACCESS
> [    9.411529] smsc95xx 1-1.1:1.0 eth0: MII is busy in smsc95xx_mdio_read
> [    9.422729] smsc95xx 1-1.1:1.0 eth0: Failed to write reg index 0x00000100: -71
> [    9.430480] smsc95xx 1-1.1:1.0 eth0: link reset failed (-71) usbnet usb-4a064c00.ehci-1.1, smsc95xx USB 2.0 Ethernet
> [  254.893829] usb 1-1.1: USB disconnect, device number 3
> [  254.905975] smsc95xx 1-1.1:1.0 eth0: unregister 'smsc95xx' usb-4a064c00.ehci-1.1, smsc95xx USB 2.0 Ethernet
> [  254.905975] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
> [  255.212585] usb 1-1: reset high-speed USB device number 2 using ehci-omap
> [  255.520080] usb 1-1: device descriptor read/64, error -71
> [  256.664794] usb 1-1: device descriptor read/64, error -71
> [  256.945129] usb 1-1: reset high-speed USB device number 2 using ehci-omap
> [  257.464782] usb 1-1: device descriptor read/64, error -71
> [  258.544799] usb 1-1: device descriptor read/64, error -71
> [  258.774780] usb 1-1: reset high-speed USB device number 2 using ehci-omap
> [  259.374816] usb 1-1: device not accepting address 2, error -71
> [  259.600677] usb 1-1: reset high-speed USB device number 2 using ehci-omap
> [  260.350799] usb 1-1: device not accepting address 2, error -71
> [  260.464782] hub 1-1:1.0: activate --> -19
> [  260.469238] usb 1-1: USB disconnect, device number 2
> [  260.605133] usb 1-1: new high-speed USB device number 4 using ehci-omap
> [  260.883819] usb 1-1: device descriptor read/64, error -71
> [  262.784790] usb 1-1: device descriptor read/64, error -71
> [  263.084320] usb 1-1: new high-speed USB device number 5 using ehci-omap
> [  264.763946] usb 1-1: device descriptor read/64, error -71
> [  265.655029] usb 1-1: device descriptor read/64, error -71
> [  265.914978] usb 1-1: new high-speed USB device number 6 using ehci-omap
> [  266.633605] usb 1-1: device not accepting address 6, error -71
> [  266.804779] usb 1-1: new high-speed USB device number 7 using ehci-omap
> [  267.304779] usb 1-1: device not accepting address 7, error -71
> [  267.311065] hub 1-0:1.0: unable to enumerate USB device on port 1
> [  282.028167] VFS: Unable to mount root fs via NFS, trying floppy.
> [  282.035308] VFS: Cannot open root device "nfs" or unknown-block(2,0): error -6
> [  282.043395] Please append a correct "root=" boot option; here are the available partitions:
> [  282.052307] b300         3858432 mmcblk0  driver: mmcblk
> [  282.056610]   b301           40131 mmcblk0p1 00000000-01
> [  282.056610]   b302         3815437 mmcblk0p2 00000000-02
> [  282.069335] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
> [  282.078643] CPU1: stopping
> [  282.081665] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.11.0-rc2 #2
> [  282.088378] [<c001cd00>] (unwind_backtrace+0x0/0xf4) from [<c0018b9c>] (show_stack+0x10/0x14)
> [  282.088378] [<c0018b9c>] (show_stack+0x10/0x14) from [<c0570350>] (dump_stack+0x70/0x90)
> [  282.088378] [<c0570350>] (dump_stack+0x70/0x90) from [<c001a1bc>] (handle_IPI+0x10c/0x134)
> [  282.114898] [<c001a1bc>] (handle_IPI+0x10c/0x134) from [<c0008698>] (gic_handle_irq+0x58/0x60)
> [  282.124084] [<c0008698>] (gic_handle_irq+0x58/0x60) from [<c05757a4>] (__irq_svc+0x44/0x5c)
> [  282.124084] Exception stack(0xed8a7f78 to 0xed8a7fc0)
> [  282.124084] 7f60:                                                       00056c26 00000001
> [  282.124084] 7f80: 00000000 ed8a5480 ed8a6000 00000000 c0888270 00000003 c0581740 c088827c
> [  282.155761] 7fa0: c07f89a8 c0887cee 00000001 ed8a7fc0 00056c27 c00162e0 20000113 ffffffff
> [  282.155761] [<c05757a4>] (__irq_svc+0x44/0x5c) from [<c00162e0>] (arch_cpu_idle+0x20/0x44)
> [  282.173278] [<c00162e0>] (arch_cpu_idle+0x20/0x44) from [<c008ea4c>] (cpu_startup_entry+0xa8/0x1ec)
> [  282.173278] [<c008ea4c>] (cpu_startup_entry+0xa8/0x1ec) from [<800081bc>] (0x800081bc)
> 
> 
> 
> 
> 
> 
> 在 2013-07-22 16:20:40，"Roger Quadros" <rogerq@ti.com> 写道：
>>Hi,
>>
>>On 07/22/2013 11:17 AM, 菲 徐 wrote:
>>> Hi all:
>>> 
>>> I met a problem about USB Ethernet on panda board with kernel 3.10 .  USB Ethernet can be detected  when device tree enabled but failed to connect to network.
>>
>>We don't yet support USB Host on panda with DT boot on 3.10.  It should work with non-DT boot.
>>
>>It will work on 3.11-rc1 with this patch on top https://lkml.org/lkml/2013/6/18/492
>>
>>Hopefully it should work out of the box from 3.11-rc2 onwards.
>>
>>cheers,
>>-roger
>>
> 

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