On Tue, Aug 14, 2018 at 2:39 PM, Oliver Neukum <oneukum@xxxxxxxx> wrote:
> On Di, 2018-08-14 at 14:29 +0530, Muni Sekhar wrote:
>>
>> Is there any way to know which HC I’m is using? I checked the
>> /sys/kernel/debug/usb/devices file and I see three HC’s.
>>
>>
>>
>> T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
>
> Match the 'Bus' number or use 'lsusb -t'
$ lsusb -t
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 5000M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 480M
|__ Port 2: Dev 91, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 2: Dev 100, If 0, Class=Hub, Driver=hub/3p, 480M
|__ Port 1: Dev 101, If 0, Class=Vendor Specific Class,
Driver=ftdi_sio, 12M
|__ Port 2: Dev 102, If 0, Class=Vendor Specific Class,
Driver=ftdi_sio, 12M
|__ Port 3: Dev 103, If 0, Class=Vendor Specific Class,
Driver=ftdi_sio, 12M
|__ Port 4: Dev 2, If 0, Class=Communications, Driver=cdc_acm, 480M
|__ Port 4: Dev 2, If 1, Class=CDC Data, Driver=cdc_acm, 480M
|__ Port 6: Dev 3, If 0, Class=Hub, Driver=hub/5p, 480M
|__ Port 5: Dev 4, If 0, Class=Vendor Specific Class, Driver=, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/8p, 480M
>
> HTH
> Oliver
>
--
Thanks,
Sekhar
