linux-kernel - [PATCH v2] dt-bindings: display: bridge: ldb: Add check for reg and reg-names

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Message-ID: <20260106012236.295834-1-marek.vasut@mailbox.org>
Date: Tue,  6 Jan 2026 02:22:20 +0100
From: Marek Vasut <marek.vasut@...lbox.org>
To: dri-devel@...ts.freedesktop.org
Cc: Marek Vasut <marek.vasut@...lbox.org>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Conor Dooley <conor+dt@...nel.org>,
	David Airlie <airlied@...il.com>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Jonas Karlman <jonas@...boo.se>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Robert Foss <rfoss@...nel.org>,
	Simona Vetter <simona@...ll.ch>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] dt-bindings: display: bridge: ldb: Add check for reg and reg-names

Make "reg" property mandatory for all LDB devices and "reg-names"
mandatory for i.MX8MP and i.MX93 which have two "reg" values. The
i.MX6SX has only one "reg" value so the "reg-names" property there
is optional and not needed.

Signed-off-by: Marek Vasut <marek.vasut@...lbox.org>
---
Cc: Andrzej Hajda <andrzej.hajda@...el.com>
Cc: Conor Dooley <conor+dt@...nel.org>
Cc: David Airlie <airlied@...il.com>
Cc: Jernej Skrabec <jernej.skrabec@...il.com>
Cc: Jonas Karlman <jonas@...boo.se>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc: Maxime Ripard <mripard@...nel.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Rob Herring <robh@...nel.org>
Cc: Robert Foss <rfoss@...nel.org>
Cc: Simona Vetter <simona@...ll.ch>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: devicetree@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
Cc: linux-kernel@...r.kernel.org
---
V2: Include only reg-names in the required: field for non-MX6SX
---
 .../devicetree/bindings/display/bridge/fsl,ldb.yaml    | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml
index 07388bf2b90df..49664101a3537 100644
--- a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml
@@ -59,6 +59,7 @@ required:
   - compatible
   - clocks
   - ports
+  - reg
 
 allOf:
   - if:
@@ -73,6 +74,15 @@ allOf:
         ports:
           properties:
             port@2: false
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: fsl,imx6sx-ldb
+    then:
+      required:
+        - reg-names
 
 additionalProperties: false
 
-- 
2.51.0