diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
index dfebf425ca49..8fe31a7083db 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
+++ b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
@@ -141,6 +141,7 @@ allOf:
           unevaluatedProperties: false
 
         pcie-phy:
+          type: object
           description:
             Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt