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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2026-02-06 12:38:18 +0300 |
|---|---|---|
| committer | Sakari Ailus <sakari.ailus@linux.intel.com> | 2026-05-07 13:23:47 +0300 |
| commit | ef56c563c4b756c6ab7ee02ea5d3b7cb7b70748c (patch) | |
| tree | 1963ea69766cb28c31aa4b45cb4d5d3e1592a177 | |
| parent | e11fb2d3a4dfd32b5f50e89892799729ee1a8049 (diff) | |
| download | linux-ef56c563c4b756c6ab7ee02ea5d3b7cb7b70748c.tar.xz | |
media: Documentation: Improve LINK_FREQ documentation
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>
| -rw-r--r-- | Documentation/driver-api/media/tx-rx.rst | 3 | ||||
| -rw-r--r-- | Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst | 5 |
2 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/driver-api/media/tx-rx.rst b/Documentation/driver-api/media/tx-rx.rst index 22e1b13ecde9..7df2407817b3 100644 --- a/Documentation/driver-api/media/tx-rx.rst +++ b/Documentation/driver-api/media/tx-rx.rst @@ -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 diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst index 6d516f041ca2..57c2baf34acf 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-image-process.rst @@ -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: |