linux-kernel - [PATCH 2/2] media:admin-guide:mgb4: Add zDML color mapping info

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Message-ID: <20260127120913.4690-3-tumic@gpxsee.org>
Date: Tue, 27 Jan 2026 13:09:13 +0100
From: tumic@...see.org
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans Verkuil <hverkuil@...all.nl>
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Tůma <martin.tuma@...iteqautomotive.com>
Subject: [PATCH 2/2] media:admin-guide:mgb4: Add zDML color mapping info

From: Martin Tůma <martin.tuma@...iteqautomotive.com>

Document the zDML (Audi Digital Matrix Light) color mapping option for
the inputs and the new outputs color mapping property.

Signed-off-by: Martin Tůma <martin.tuma@...iteqautomotive.com>
---
 Documentation/admin-guide/media/mgb4.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/admin-guide/media/mgb4.rst b/Documentation/admin-guide/media/mgb4.rst
index 0a8a56e837f7..8e429fd77712 100644
--- a/Documentation/admin-guide/media/mgb4.rst
+++ b/Documentation/admin-guide/media/mgb4.rst
@@ -74,6 +74,7 @@ Common FPDL3/GMSL input parameters
 
     | 0 - OLDI/JEIDA
     | 1 - SPWG/VESA (default)
+    | 2 - ZDML
 
 **link_status** (R):
     Video link status. If the link is locked, chips are properly connected and
@@ -240,6 +241,13 @@ Common FPDL3/GMSL output parameters
     *Note: This parameter can not be changed while the output v4l2 device is
     open.*
 
+**color_mapping** (RW):
+    Mapping of the outgoing bits in the signal to the colour bits of the pixels.
+
+    | 0 - OLDI/JEIDA
+    | 1 - SPWG/VESA (default)
+    | 2 - ZDML
+
 **frame_rate** (RW):
     Output video signal frame rate limit in frames per second. Due to
     the limited output pixel clock steps, the card can not always generate
-- 
2.52.0