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media: Documentation: Improve LINK_FREQ documentation

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Add a reference to the LINK_FREQ control and clarify the meaning of the
control as for C-PHY the matter is less obvious.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Sakari Ailus 2026-02-06 11:38:18 +02:00
parent e11fb2d3a4
commit ef56c563c4
2 changed files with 6 additions and 2 deletions
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3
Documentation/driver-api/media/tx-rx.rst
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@ -93,7 +93,8 @@ where
* - variable or constant
- description
* - link_freq
- The value of the ``V4L2_CID_LINK_FREQ`` integer64 menu item.
- The value of the :ref:`V4L2_CID_LINK_FREQ <v4l2-cid-link-freq>` integer64
menu item.
* - nr_of_lanes
- Number of data lanes used on the CSI-2 link.
* - 2

5
Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst
View File

@ -24,7 +24,10 @@ Image Process Control IDs
.. _v4l2-cid-link-freq:
``V4L2_CID_LINK_FREQ (integer menu)``
The frequency of the data bus (e.g. parallel or CSI-2).
The fundamental frequency of the operating symbol rate (serial interfaces
such as CSI-2) or the sampling rate (parallel interfaces such as DVP or
Bt.565) of the data interface. For CSI-2, the frequency is equal to
_1 / (2 * UI)_.
.. _v4l2-cid-pixel-rate: