[PATCH 2/4] dt-bindings: display/msm/gpu: document using the amd, imageon adreno too

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The DT binding desribes using amd,imageon only for Imageon 2xx GPUs. We
have been using amd,imageon with newer (Adreno) GPUs to describe the
headless setup, when the platform does not (yet) have the display DT
nodes (and no display support). Document this trick in the schema.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/display/msm/gpu.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
index 346aabdccf7b..e006da95462c 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
@@ -16,9 +16,13 @@ properties:
       - description: |
           The driver is parsing the compat string for Adreno to
           figure out the gpu-id and patch level.
+          Optional amd,imageon compatibility string enables using Adreno
+          without the display node.
         items:
           - pattern: '^qcom,adreno-[3-6][0-9][0-9]\.[0-9]$'
           - const: qcom,adreno
+          - const: amd,imageon
+        minItems: 2
       - description: |
           The driver is parsing the compat string for Imageon to
           figure out the gpu-id and patch level.
@@ -148,6 +152,8 @@ allOf:
                 description: GPU 3D engine clock
               - const: rbbmtimer
                 description: GPU RBBM Timer for Adreno 5xx series
+              - const: rbcpr
+                description: GPU RB CPR clock
           minItems: 2
           maxItems: 7
 
-- 
2.35.1




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