diff --git a/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml b/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml
index deb5b657a2d5..d36fcca04cbc 100644
--- a/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml
+++ b/Documentation/devicetree/bindings/media/mediatek,vcodec-encoder.yaml
@@ -63,6 +63,9 @@ properties:
     description:
       Describes point to scp.
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg