Quoting Petko Manolov (2022-07-14 16:22:09) > Hi guys, > > I've got a long pipeline of four entities and need to make the imx492 sensor > stream out a test pattern. When i do: > > v4l2-ctl -d /dev/v4l-subdev2 --set-ctrl=test_pattern=2 > > I can see the driver acknowledging the switch to test pattern 2. However, when > start streaming with: > > v4l2-ctl -d /dev/video0 --stream-mmap --stream-to=frame.raw --stream-count=1 > > the driver reports setting the test pattern to the default 0. How should this > be done properly? 'Which' driver is reporting setting the test pattern? Can you check where that's happening and identify 'why'? As I understand it - it shouldn't be happening, so I suspect it's something in your CSI2 receiver driver initialising some defaults perhaps. -- Kieran > > > thanks, > Petko
