Through the debug, the problem has been resolved, it can be recognized normally, and the windows driver can be loaded normally, thank you On Tue, Nov 10, 2020 at 10:28 AM app l <lipc198702@xxxxxxxxx> wrote: > > Hi, > Version: 4.9 and uac1 driver is V5.9. I tested it based on 4.9 with > backported dwc3 driver frome v5.9. > 1. According to configfs-usb-gadget-uvc, PC(Windows 10) can get ISO > data normally; > 2. According to configfs-usb-gadget-uac1, PC(Windows 10) can install > audio driver normally(AC Interface,/Captue Input terminal/Speaker); > 3、uvc+uac1 composite device, PC(Windows 10) can get ISO data normally, > but PC shows that the uac1 driver installation failed(AC > Interface/Capture Inactive/Playback Inactive). AC Interface/Capture > Inactive/Playback Inactive all show the device cannot start code 10, > The settings of the I/O device are incorrect or the configuration > parameters of the driver are incorrect. Through the USB analyzer to > capture the packet, I found that the Index value seems to be wrong > when PC host to get the descriptor. The acquisition is Playback > Inactive and Capture Inactive, and the PC did not send the command > packet about uac1. It is difficult to debug it. > I suspect that some parts of the uac1 descriptor need to be modified, > but I don’t know which one to modify. > I sincerely hope that everyone can give some suggestions or related > patches to help me. Thanks very much! > > Regards, > pengcheng
