linux-kernel - [PATCH RFC v2 1/5] dt-bindings: display: panel: Fix port binding

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Message-Id: <20250424-feature_sfto340xc-v2-1-ff7da6192df2@bootlin.com>
Date: Thu, 24 Apr 2025 17:07:39 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Miquel Raynal <miquel.raynal@...tlin.com>, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Kory Maincent <kory.maincent@...tlin.com>
Subject: [PATCH RFC v2 1/5] dt-bindings: display: panel: Fix port binding

Faced a binding error check while adding the data-lanes property in the
ilitek,ili9881c binding. See the next patch for the binding changes.
Here is the error:
Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.example.dtb:
panel@0: port:endpoint: Unevaluated properties are not allowed
('data-lanes' was unexpected)

Change the reference of properties/port to $defs/port-base to makes it
work.
The only difference between port and port-base is the unevaluatedProperty
set to false. I have tried to use properties/port in both panel-common
and ilitek,ili9881c bindings but the error is still there. The only way
to not face the error is to use $defs/port-base reference. I don't
really understand the ins and outs, maybe it is a issue from the binding
check tool.

Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---

Changes in v2:
- New patch
---
 Documentation/devicetree/bindings/display/panel/panel-common.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
index 087415753d606ce67bceabaa9b0ba7d463282f92..635f67ced0cb7103684a1415ab740d83409a7dbb 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
@@ -76,7 +76,7 @@ properties:
 
   # Connectivity
   port:
-    $ref: /schemas/graph.yaml#/properties/port
+    $ref: /schemas/graph.yaml#/$defs/port-base
 
   ddc-i2c-bus:
     $ref: /schemas/types.yaml#/definitions/phandle

-- 
2.34.1