[PATCH 3/3] dt-bindings: display: msm: sm8550-mdss: document displayport controller subnode

[Neil Armstrong <neil.armstrong@xxxxxxxxxx>]

Document the optional document displayport controller subnode
of the SM8550 MDSS.

Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
 .../devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
index 887be33ba108..70ce7cb7a80d 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8550-mdss.yaml
@@ -42,6 +42,14 @@ patternProperties:
       compatible:
         const: qcom,sm8550-dpu
 
+  "^displayport-controller@[0-9a-f]+$":
+    type: object
+    properties:
+      compatible:
+        items:
+          - const: qcom,sm8550-dp
+          - const: qcom,sm8350-dp
+
   "^dsi@[0-9a-f]+$":
     type: object
     properties:

-- 
2.34.1