Hi, kun peng <kunpeng0891@xxxxxxxxx> writes: > On Thu, Jun 10, 2021 at 6:07 PM Felipe Balbi <balbi@xxxxxxxxxx> wrote: >> >> Hi, >> >> kun peng <kunpeng0891@xxxxxxxxx> writes: >> > Hi ， I'm using the 4*A53 with DWC3 USB controller, my hardware to work >> > like a USB camera and so make use of the USB 3.0 UVC gadget driver。 >> > usb3.0 isoc transfer with missisoc -18，larger maxburst is set, the >> > more -18 appears。 >> > but from trace info, the trb has been put in advance。 >> > >> > test setting: >> > dwc3 driver version：5.12 >> > PC： potplayer >> > >> > maxpacket : 3072 >> > maxburst : 15 >> > interval : 1 >> > UVC_NUM_REQUESTS: 8 >> >> sorry, you're running 4.14.74 kernel. That's far too old for this forum >> to help you. Try reproducing with the latest v5.13-rc kernel. >> >> -- >> balbi > > thanks for your reply. > > my kernel is 4.14, but usb and uvc related driver has been update to > 5.12.0 linux main line. > The problem mentioned above is after the update. right, many other things happen in the framework. You could bisect and try to find the offending commit, but this forum can't do much to help, sorry. -- balbi
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