From 3a7c9b42b464becfec9e98776b169f38f8520d8a Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Date: Tue, 17 Dec 2024 07:31:38 +0200
Subject: [PATCH] dt-bindings: display: renesas,du: Add r8a779h0

Extend the Renesas DU display bindings to support the r8a779h0 V4M.

Note that we remove the requirement for two ports from the global part
of the bindings, as each conditional part defines the number of required
ports already. This came up with r8a779h0 as it's the first one that has
only one port.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217-rcar-gh-dsi-v5-4-e77421093c05@ideasonboard.com
---
 .../bindings/display/renesas,du.yaml          | 52 +++++++++++++++++--
 1 file changed, 48 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/renesas,du.yaml b/Documentation/devicetree/bindings/display/renesas,du.yaml
index ef4568118e945..3880b4c2ea9ad 100644
--- a/Documentation/devicetree/bindings/display/renesas,du.yaml
+++ b/Documentation/devicetree/bindings/display/renesas,du.yaml
@@ -41,6 +41,7 @@ properties:
       - renesas,du-r8a77995 # for R-Car D3 compatible DU
       - renesas,du-r8a779a0 # for R-Car V3U compatible DU
       - renesas,du-r8a779g0 # for R-Car V4H compatible DU
+      - renesas,du-r8a779h0 # for R-Car V4M compatible DU
 
   reg:
     maxItems: 1
@@ -69,10 +70,6 @@ properties:
         $ref: /schemas/graph.yaml#/properties/port
         unevaluatedProperties: false
 
-    required:
-      - port@0
-      - port@1
-
     unevaluatedProperties: false
 
   renesas,cmms:
@@ -820,6 +817,53 @@ allOf:
         - reset-names
         - renesas,vsps
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,du-r8a779h0
+    then:
+      properties:
+        clocks:
+          items:
+            - description: Functional clock
+
+        clock-names:
+          items:
+            - const: du.0
+
+        interrupts:
+          maxItems: 1
+
+        resets:
+          maxItems: 1
+
+        reset-names:
+          items:
+            - const: du.0
+
+        ports:
+          properties:
+            port@0:
+              description: DSI 0
+            port@1: false
+            port@2: false
+            port@3: false
+
+          required:
+            - port@0
+
+        renesas,vsps:
+          maxItems: 1
+
+      required:
+        - clock-names
+        - interrupts
+        - resets
+        - reset-names
+        - renesas,vsps
+
 additionalProperties: false
 
 examples:
-- 
2.50.1