[PATCH 1/1] Documentation: media: Document media bus codes to use on serial busses

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Document media bus codes on serial busses. The single sample per pixel
variant is to be chosen from all the possible variants. While this has
been the practice since the introduction of CSI-2 support, it never was
written down. Do it now.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 Documentation/driver-api/media/csi2.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/driver-api/media/csi2.rst b/Documentation/driver-api/media/csi2.rst
index da8b356389f0..af078ac927bd 100644
--- a/Documentation/driver-api/media/csi2.rst
+++ b/Documentation/driver-api/media/csi2.rst
@@ -10,6 +10,16 @@ the host SoC. It is defined by the `MIPI alliance`_.
 
 .. _`MIPI alliance`: http://www.mipi.org/
 
+Media bus formats
+-----------------
+
+Always use single sample per pixel formats on the CSI-2 bus.
+
+No new media bus formats were created when the support for serial busses were
+added. To avoid using different media bus codes to describe the same format, the
+practice is to use a format that has a single sample per pixel on the parallel
+bus.
+
 Transmitter drivers
 -------------------
 
-- 
2.20.1