Hi Sid, alas no device in udc, what can I do? marcusmae@m1k:~$ cat /sys/class/usb_role/intel_xhci_usb_sw-role-switch/role device marcusmae@m1k:~$ ls -l /sys/class/udc total 0 чт, 22 окт. 2020 г. в 23:26, Sid Spry <sid@xxxxxxx>: > > On Thu, Oct 22, 2020, at 4:06 PM, Dmitry N. Mikushin wrote: > > Yes, AFAIK PCI_DEVICE_ID_INTEL_GLK_XHCI is actually 0x31a8, and I do have it: > > > > 00:15.0 USB controller [0c03]: Intel Corporation Device [8086:31a8] (rev 03) > > > > Board is M1K. > > My kernel is 5.4.0-48-lowlatency with the following additional patch: > > https://lore.kernel.org/patchwork/patch/1037542/ > > I have dwc3 as a kernel module. > > I'm not testing any gadget, I just have no idea what to test. Could > > you please suggest some sources on how I should map gadget onto my > > dwc3 port? > > > > Thanks & Kind Regards, > > - Dmitry. > > > > After you set the DRD switch to device do you see a device in /sys/class/udc? > > I will show you how to use configfs. You must enable USB gadget configfs. It > is easier to use in my opinion. The other gadget drivers simply need to be > loaded, but I am unsure how they work with newer DWC3 hardware. Most > of the code is written for android and android uses configfs. > > `modprobe libcomposite` then execute the following, using that name: > > #!/usr/bin/env bash > cd /sys/kernel/config/usb_gadget > if [[ -d "g0" ]]; then > echo "" > g0/UDC > rm -rf g0; > fi > > mkdir g0 > cd g0 > > echo "0x1d6b" > idVendor > echo "0x0104" > idProduct > > mkdir strings/0x409 > echo "0000000000" > strings/0x409/serialnumber > echo "Your Company" > strings/0x409/manufacturer > echo "Your Device" > strings/0x409/product > > mkdir functions/ncm.usb0 > > mkdir configs/c.1 > ln -s functions/ncm.usb0 configs/c.1 > > # List /sys/class/udc and take a name for this line: > echo "" > UDC > > This will set up a Ethernet NCM device. There are similar instructions > from the configfs author in a powerpoint. More device types are in the > documentation.
