On Tue, Apr 13, 2010 at 10:27 AM, Andreas Auer <[email protected]> wrote: > Hi, > > I'm trying to get a UVC webcam working with the latest khilman kernel > (2.6.34) on a Davinci EVM like board with DM6446 processor. > > I'm able to request the buffers and queue them without errors. But if I > switch on the streaming the UVC driver tells me: > "uvcvideo: USB isochronous frame lost (-18)." > > Some time ago, I tried the 2.6.32 kernel from the arago project and webcam > capturing was working out of the box but WLAN was not working. (so, I > switched to the khilman kernel). > > Maybe, someone can help me with the uvc webcam problem!!! >
with our tests the DM6446 only supported up to around 4.5 mbyte of isochronous data... Raw Analog TV 720x576x25 requires around 170 mbit, I guess webcams are near to that level there's no chance to get such a thing work. Maybe MJPEG or MPEG based devices can work with it. Markus _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
