MX51 Babbage Linux version 2.6.35.3 otg usb不能识别 求高手解惑

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Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 008c FLR PCD
Jan  1 08:01:47 lucid-desktop kernel: hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 14001403 POWER sig=k CSC CONNECT
Jan  1 08:01:47 lucid-desktop kernel: hub 1-0:1.0: port 1, status 0301, change 0001, 1.5 Mb/s
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 14001401 POWER sig=k CONNECT
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 008c FLR PCD
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 008c FLR PCD
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 10001803 POWER sig=j CSC CONNECT
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 10001801 POWER sig=j CONNECT
Jan  1 08:01:47 lucid-desktop kernel: last message repeated 3 times
Jan  1 08:01:47 lucid-desktop kernel: hub 1-0:1.0: debounce: port 1: total 125ms stable 100ms status 0x101
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: port 1 reset
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 008c FLR PCD
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 18001205 POWER sig=se0 PE CONNECT
Jan  1 08:01:47 lucid-desktop kernel: usb 1-1: new high speed USB device using fsl-ehci and address 2
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: submit_async 1 urb 99d18080 ep0out len 64, qtd fa0a7060 [qh (null)]
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 1
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 2
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 3
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 4
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 5
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/64 retry 6
Jan  1 08:01:47 lucid-desktop kernel: fsl-ehci fsl-ehci.0: irq status 808a Async FLR ERR
设置完地址 后获取设备描述符 失败

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小成说事

irq status 808a Async FLR ERR,应该是找不到IRQ 808A，这个你注意看一下。