On Wed, Sep 06, 2023, Michael Grzeschik wrote: > > > 2) Burst setting > > I think this is self-explainatory. Large data request needs > > higher burst. > > I will have to find out if the burst setting can be changed on the > rk3568 somehow. This sounds very likely. > The dwc3 driver checks the endpoint descriptor from the UVC function driver to setup the burst. So just setup the max 16 bursts (or 15 in the descriptor). The dwc3 controller supports that. Whether the host would do 16 bursts is another thing. Note that there's no "mult" setting for SuperSpeed. I recall that UVC tries to pack a lot of data in a single request. All the while some intervals it would send 0-length data because of idle time. I would spread to more requests with a little less data to give the host a little more breathing room and bandwidth. BR, Thinh
