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media: Documentation: Update link frequency driver documentation

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Add the get_mbus_config() as the means for conveying the link frequency
towards the receiver drivers.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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Sakari Ailus 2024-05-16 15:25:38 +03:00 • committed by Hans Verkuil
parent 9849b9fead
commit be1e7b0e78
1 changed files with 4 additions and 0 deletions
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4
Documentation/driver-api/media/tx-rx.rst
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@ -49,6 +49,10 @@ Link frequency
The :ref:`V4L2_CID_LINK_FREQ <v4l2-cid-link-freq>` control is used to tell the
receiver the frequency of the bus (i.e. it is not the same as the symbol rate).
Drivers that do not have user-configurable link frequency should report it
through the ``.get_mbus_config()`` subdev pad operation, in the ``link_freq``
field of struct v4l2_mbus_config, instead of through controls.
``.enable_streams()`` and ``.disable_streams()`` callbacks
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^