diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 6fa9cc332482..f42589f83eb5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -390,8 +390,10 @@
 	};
 
 	pmugrf: syscon@ff320000 {
-		compatible = "rockchip,rk3399-pmugrf", "syscon";
+		compatible = "rockchip,rk3399-pmugrf", "syscon", "simple-mfd";
 		reg = <0x0 0xff320000 0x0 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
 	};
 
 	spi3: spi@ff350000 {
@@ -497,8 +499,10 @@
 	};
 
 	grf: syscon@ff770000 {
-		compatible = "rockchip,rk3399-grf", "syscon";
+		compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
 		reg = <0x0 0xff770000 0x0 0x10000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
 	};
 
 	watchdog@ff840000 {