[PATCH] arm64: dts: sun50i-h5-orange-pi-pc2: Add CPUX voltage regulator

[Ondrej Jirman <megous@xxxxxxxxxx>]

Orange Pi PC2 features sy8106a regulator just like Orange Pi PC.

Signed-off-by: Ondrej Jirman <megous@xxxxxxxxxx>
---
 .../dts/allwinner/sun50i-h5-orangepi-pc2.dts  | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dts
index 70b5f09984218..5feedde95b5fc 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-pc2.dts
@@ -85,6 +85,10 @@ reg_usb0_vbus: usb0-vbus {
 	};
 };
 
+&cpu0 {
+	cpu-supply = <&reg_vdd_cpux>;
+};
+
 &codec {
 	allwinner,audio-routing =
 		"Line Out", "LINEOUT",
@@ -180,6 +184,31 @@ flash@0 {
 	};
 };
 
+&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;
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pa_pins>;
-- 
2.25.1