diff --git a/Documentation/devicetree/bindings/phy/rockchip,rk3588-hdptx-phy.yaml b/Documentation/devicetree/bindings/phy/rockchip,rk3588-hdptx-phy.yaml
index 54e822c715f3f4060afed91590f4fa24fa2999af..84fe59dbcf487c8471f2d27597a624000dac6256 100644
--- a/Documentation/devicetree/bindings/phy/rockchip,rk3588-hdptx-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/rockchip,rk3588-hdptx-phy.yaml
@@ -27,6 +27,9 @@ properties:
       - const: ref
       - const: apb
 
+  "#clock-cells":
+    const: 0
+
   "#phy-cells":
     const: 0