linux-kernel - [PATCH] dt-bindings: display/msm/gmu: fix the schema being not applied

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Date: Sun, 23 Jun 2024 14:59:30 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Rob Clark <robdclark@...il.com>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-arm-msm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Akhil P Oommen <quic_akhilpo@...cinc.com>
Subject: [PATCH] dt-bindings: display/msm/gmu: fix the schema being not applied

dtschema v2024.4, v2024.5 and maybe earlier do not select device nodes for
given binding validation if the schema contains compatible list with
pattern and a const fallback.  This leads to binding being a no-op - not
being applied at all.  Issue should be fixed in the dtschema but for now
add a work-around do the binding can be used against DTS validation.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Cc: Akhil P Oommen <quic_akhilpo@...cinc.com>
---
 .../devicetree/bindings/display/msm/gmu.yaml         | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
index b3837368a260..8d1b515f59ec 100644
--- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
@@ -17,6 +17,18 @@ description: |
   management and support to improve power efficiency and reduce the load on
   the CPU.
 
+# dtschema does not select nodes based on pattern+const, so add custom select
+# as a work-around:
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,adreno-gmu
+          - qcom,adreno-gmu-wrapper
+  required:
+    - compatible
+
 properties:
   compatible:
     oneOf:
-- 
2.43.0