From fe15516466ced5e9aa71d71b44134833cab19ac4 Mon Sep 17 00:00:00 2001
From: The-going <48602507+The-going@users.noreply.github.com>
Date: Mon, 24 Jan 2022 18:23:18 +0300
Subject: [PATCH 083/101] arm:dts: h3-orangepi-2 Add regulator vdd cpu

---
 arch/arm/boot/dts/sun8i-h3-orangepi-2.dts | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-2.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-2.dts
index 0347b763a..fcecfa037 100644
--- a/arch/arm/boot/dts/sun8i-h3-orangepi-2.dts
+++ b/arch/arm/boot/dts/sun8i-h3-orangepi-2.dts
@@ -123,6 +123,10 @@ &de {
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_vdd_cpux>;
+};
+
 &ehci1 {
 	status = "okay";
 };
@@ -177,6 +181,31 @@ rtl8189: sdio_wifi@1 {
 	};
 };
 
+&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;
+	};
+};
+
 &reg_usb1_vbus {
 	gpio = <&pio 6 13 GPIO_ACTIVE_HIGH>;
 	status = "okay";
-- 
2.31.1