diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-k1-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-k1-plus.dts
index 10d567ea7..726d76b47 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-k1-plus.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-k1-plus.dts
@@ -152,6 +152,10 @@
     };
 };

+&cpu0 {
+	cpu-supply = <&reg_vdd_cpux>;
+};
+
 &codec {
 	allwinner,audio-routing =
 		"Line Out", "LINEOUT",
@@ -301,6 +305,31 @@
 	status = "okay";
 };

+
+&r_i2c {
+	status = "okay";
+	reg_vdd_cpux: regulator@65 {
+		compatible = "silergy,sy8106a";
+		reg = <0x65>;
+		regulator-name = "vdd-cpux";
+		silergy,fixed-microvolt = <1200000>;
+		/*
+		 * The datasheet uses 1.1V as the minimum value of VDD-CPUX,
+		 * however both the Armbian DVFS table and the official one
+		 * have operating points with voltage under 1.1V, and both
+		 * DVFS table are known to work properly at the lowest
+		 * operating point.
+		 *
+		 * Use 1.0V as the minimum voltage instead.
+		 */
+		regulator-min-microvolt = <1000000>;
+		regulator-max-microvolt = <1400000>;
+		regulator-ramp-delay = <200>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
 &spi0 {
 	status = "okay";
         spi-flash@0 {