Add logs/sys_kernel_debug_usb_devices.txt
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root@OpenWrt:/sys/kernel/debug/usb# cat devices
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T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
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B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
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D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
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P: Vendor=1d6b ProdID=0002 Rev= 4.14
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S: Manufacturer=Linux 4.14.275 ehci_hcd
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S: Product=EHCI Host Controller
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S: SerialNumber=ehci-platform
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C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
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I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
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E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
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T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 1
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B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
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D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
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P: Vendor=1d6b ProdID=0001 Rev= 4.14
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S: Manufacturer=Linux 4.14.275 ohci_hcd
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S: Product=Generic Platform OHCI controller
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S: SerialNumber=ohci-platform
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C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
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I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
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E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
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T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
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D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
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P: Vendor=0d8c ProdID=0014 Rev= 1.00
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S: Manufacturer=C-Media Electronics Inc.
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S: Product=USB Audio Device
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C:* #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=100mA
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I:* If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
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I:* If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
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I: If#= 1 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
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E: Ad=01(O) Atr=09(Isoc) MxPS= 200 Ivl=1ms
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I:* If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
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I: If#= 2 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
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E: Ad=82(I) Atr=0d(Isoc) MxPS= 100 Ivl=1ms
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I:* If#= 3 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=(none)
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E: Ad=87(I) Atr=03(Int.) MxPS= 4 Ivl=2ms
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