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media: imx.rst: Provide an example for unprocessed video capture

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The current example for imx6q-sabresd is for a direct conversion pipeline.

Provide an extra example using unprocessed video capture for completeness.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fabio Estevam 2020-04-09 18:29:43 +02:00 committed by Mauro Carvalho Chehab
parent 9429e7072f
commit 62ce7201f4
1 changed files with 20 additions and 0 deletions
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Documentation/admin-guide/media/imx.rst
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@ -589,6 +589,26 @@ CSI-2 OV5640 has been tested, so the OV5642 node is currently disabled.
The OV5640 module connects to MIPI connector J5 (sorry I don't have the
compatible module part number or URL).
The following example configures unprocessed video capture pipeline to
capture from the OV5640, transmitting on MIPI CSI-2 virtual channel 0:
.. code-block:: none
# Setup links
media-ctl -l "'ov5640 1-003c':0 -> 'imx6-mipi-csi2':0[1]"
media-ctl -l "'imx6-mipi-csi2':1 -> 'ipu1_csi0_mux':0[1]"
media-ctl -l "'ipu1_csi0_mux':2 -> 'ipu1_csi0':0[1]"
media-ctl -l "'ipu1_csi0':2 -> 'ipu1_csi0 capture':0[1]"
# Configure pads
media-ctl -V "'ov5640 1-003c':0 [fmt:UYVY2X8/640x480]"
media-ctl -V "'imx6-mipi-csi2':1 [fmt:UYVY2X8/640x480]"
media-ctl -V "'ipu1_csi0_mux':0 [fmt:UYVY2X8/640x480]"
media-ctl -V "'ipu1_csi0':0 [fmt:AYUV32/640x480]"
Streaming can then begin on "ipu1_csi0 capture" node. The v4l2-ctl
tool can be used to select any supported pixelformat on the capture
device node.
The following example configures a direct conversion pipeline to capture
from the OV5640, transmitting on MIPI CSI-2 virtual channel 0. It also
shows colorspace conversion and scaling at IC output.