On Tue, Mar 21, 2017 at 11:59:02AM +0100, Hans Verkuil wrote: > Ah, good to hear that -s works with MC. I was not sure about that. > Thanks for the feedback! Not soo good on iMX6: $ v4l2-compliance -d /dev/video10 -s --expbuf-device=/dev/video0 ... Input ioctls: test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported) test VIDIOC_G/S_FREQUENCY: OK (Not Supported) test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported) test VIDIOC_ENUMAUDIO: OK (Not Supported) fail: v4l2-test-input-output.cpp(420): G_INPUT not supported for a capture device test VIDIOC_G/S/ENUMINPUT: FAIL test VIDIOC_G/S_AUDIO: OK (Not Supported) Inputs: 0 Audio Inputs: 0 Tuners: 0 ... Control ioctls: test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK test VIDIOC_QUERYCTRL: OK test VIDIOC_G/S_CTRL: OK test VIDIOC_G/S/TRY_EXT_CTRLS: OK fail: v4l2-test-controls.cpp(782): subscribe event for control 'User Controls' failed test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL ... Streaming ioctls: test read/write: OK (Not Supported) fail: v4l2-test-buffers.cpp(297): g_field() == V4L2_FIELD_ANY fail: v4l2-test-buffers.cpp(703): buf.check(q, last_seq) fail: v4l2-test-buffers.cpp(973): captureBufs(node, q, m2m_q, frame_count, false) test MMAP: FAIL test USERPTR: OK (Not Supported) fail: v4l2-test-buffers.cpp(1188): can_stream && ret != EINVAL test DMABUF: FAIL (/dev/video0 being CODA). CODA itself seems to have failures: Format ioctls: test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK warn: v4l2-test-formats.cpp(1187): S_PARM is supported for buftype 2, but not ENUM_FRAMEINTERVALS warn: v4l2-test-formats.cpp(1194): S_PARM is supported but doesn't report V4L2_CAP_TIMEPERFRAME test VIDIOC_G/S_PARM: OK test VIDIOC_G_FBUF: OK (Not Supported) test VIDIOC_G_FMT: OK test VIDIOC_TRY_FMT: OK fail: v4l2-test-formats.cpp(774): fmt_out.g_colorspace() != col ... Streaming ioctls: test read/write: OK (Not Supported) fail: v4l2-test-buffers.cpp(956): q.create_bufs(node, 1, &fmt) != EINVAL test MMAP: FAIL test USERPTR: OK (Not Supported) test DMABUF: Cannot test, specify --expbuf-device -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.