diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 2257706ce84fc..cd9dc815089ff 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -87,6 +87,7 @@
 			reg = <0x4000c000 0x1000>;
 			status = "okay";
 			#clock-cells = <1>;
+			#power-domain-cells = <0>;
 
 			clocks = <&ext_mclk>, <&ext_rtc_clk>,
 					<&ext_jtag_clk>, <&ext_rgmii_ref>;