diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index e756977acd51..e5f19dd2ff38 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -675,6 +675,7 @@ properties:
           - enum:
               - powkiddy,rgb30
               - powkiddy,rk2023
+              - powkiddy,x55
           - const: rockchip,rk3566
 
       - description: Radxa Compute Module 3(CM3)