diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 0a1059f70985..517e84071a8d 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -853,7 +853,7 @@
 	};
 
 	grf: syscon@ff770000 {
-		compatible = "rockchip,rk3288-grf", "syscon";
+		compatible = "rockchip,rk3288-grf", "syscon", "simple-mfd";
 		reg = <0xff770000 0x1000>;
 	};