From 3a2be32a681764f20601a8d9692d4cd5fed5dcbd Mon Sep 17 00:00:00 2001
From: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Date: Tue, 19 May 2026 17:08:21 +0100
Subject: [PATCH] dt-bindings: display: renesas,rzg2l-du: Refuse port@1 for
 RZ/G2UL

The RZ/G2UL DU supports only a single port@0 DPI. Explicitly refuse
port@1 in the ports node.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://patch.msgid.link/20260519160825.4082566-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
index 2cc66dcef870a..5add3b832eab0 100644
--- a/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
+++ b/Documentation/devicetree/bindings/display/renesas,rzg2l-du.yaml
@@ -102,6 +102,7 @@ allOf:
           properties:
             port@0:
               description: DPI
+            port@1: false
 
           required:
             - port@0
-- 
2.47.3