Hi Bastian, On Tuesday 22 March 2011 17:11:04 Bastian Hecht wrote: > Hello omap isp devs, > > maybe you can help me, I am a bit desperate with my current cam problem: > > I use a ov5642 chip and get only 0x55 in my data output when I use a > camclk > 1 MHz. With 1 MHz data rate from the camera chip to the omap > all works (well the colorspace is strange - it's greenish, but that is > not my main concern). > I looked up the data on the oscilloscope and all flanks seem to be > fine at the isp. Very clear cuts with 4 MHz and 10MHz. Also the data > pins are flickering fine. Looks like a picture. > > I found that the isp stats module uses 0x55 as a magic number but I > don't see why it should confuse my readout. > > I use 2592x1944 raw bayer output via the ccdc. Next to the logical > right config I tried all possible configurations of vs/hs active high > and low on camera and isp. The isp gets the vs flanks right as the > images come out in time (sometimes it misses 1 frame). > > Anyone of you had this behaviour before?
How do you capture images ? yavta will fill buffers with 0x55 before queueing them, so this might indicate that no data is written to the buffer at all. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
