[PATCH v2 4/4] dt-bindings: display/msm/gpu: fix the schema being not applied

[Krzysztof Kozlowski]

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 at linaro.org>

---

This will uncover issues with DTS, which is expected and fixed in:
1. Incorrect AMD compatible:
   https://lore.kernel.org/linux-arm-msm/20240623193420.333735-1-krzysztof.kozlowski@linaro.org/T/#t

2. alwayson clock:
   https://lore.kernel.org/linux-arm-msm/20240121194221.13513-6-a39.skl@gmail.com/
---
 Documentation/devicetree/bindings/display/msm/gpu.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
index 03aaced1abda..6ddc72fd85b0 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
@@ -10,6 +10,18 @@ title: Adreno or Snapdragon GPUs
 maintainers:
   - Rob Clark <robdclark at gmail.com>
 
+# dtschema does not select nodes based on pattern+const, so add custom select
+# as a work-around:
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,adreno
+          - amd,imageon
+  required:
+    - compatible
+
 properties:
   compatible:
     oneOf:

-- 
2.43.0