diff --git a/arch/arm64/boot/dts/rockchip/rk3368.dtsi b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
index 8b4a7c9154e9..4fb8484f1af3 100644
--- a/arch/arm64/boot/dts/rockchip/rk3368.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
@@ -632,7 +632,7 @@
 	};
 
 	pmugrf: syscon@ff738000 {
-		compatible = "rockchip,rk3368-pmugrf", "syscon";
+		compatible = "rockchip,rk3368-pmugrf", "syscon", "simple-mfd";
 		reg = <0x0 0xff738000 0x0 0x1000>;
 	};
 
@@ -645,7 +645,7 @@
 	};
 
 	grf: syscon@ff770000 {
-		compatible = "rockchip,rk3368-grf", "syscon";
+		compatible = "rockchip,rk3368-grf", "syscon", "simple-mfd";
 		reg = <0x0 0xff770000 0x0 0x1000>;
 	};