ARM: dts: owl-s500-roseapplepi: Add ATC2603C PMIC

Add device tree node for ATC2603C PMIC and remove the 'fixed-3.1V'
dummy regulator used for the uSD supply.

Additionally, add 'SYSPWR' fixed regulator and provide cpu0 supply.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://lore.kernel.org/r/2e0a2931ae3757f016948e7c78e8e54afa325ae0.1615538629.git.cristian.ciocaltea@gmail.com
Link: https://lore.kernel.org/r/20210408062232.3575-1-mani@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/owl-s500-roseapplepi.dts

@@ -2,7 +2,7 @@
 /*
  * Roseapple Pi
  *
- * Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
+ * Copyright (C) 2020-2021 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
  */
 
 /dts-v1/;
@@ -27,20 +27,140 @@ memory@0 {
 		reg = <0x0 0x80000000>; /* 2GB */
 	};
 
-	/* Fixed regulator used in the absence of PMIC */
-	sd_vcc: sd-vcc {
+	syspwr: regulator-5v0 {
 		compatible = "regulator-fixed";
-		regulator-name = "fixed-3.1V";
-		regulator-min-microvolt = <3100000>;
-		regulator-max-microvolt = <3100000>;
+		regulator-name = "SYSPWR";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
 		regulator-always-on;
 	};
 };
 
+&cpu0 {
+	cpu0-supply = <&vdd_cpu>;
+};
+
 &i2c0 {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins>;
+
+	atc260x: pmic@65 {
+		compatible = "actions,atc2603c";
+		reg = <0x65>;
+		interrupt-parent = <&sirq>;
+		interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
+
+		reset-time-sec = <6>;
+
+		regulators {
+			compatible = "actions,atc2603c-regulator";
+
+			dcdc1-supply = <&syspwr>;
+			dcdc2-supply = <&syspwr>;
+			dcdc3-supply = <&syspwr>;
+			ldo1-supply = <&syspwr>;
+			ldo2-supply = <&syspwr>;
+			ldo3-supply = <&syspwr>;
+			ldo5-supply = <&syspwr>;
+			ldo6-supply = <&syspwr>;
+			ldo7-supply = <&syspwr>;
+			ldo8-supply = <&syspwr>;
+			ldo11-supply = <&syspwr>;
+			ldo12-supply = <&syspwr>;
+			switchldo1-supply = <&vcc>;
+
+			vdd_cpu: dcdc1 {
+				regulator-name = "VDD_CPU";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-always-on;
+			};
+
+			vddq: dcdc2 {
+				regulator-name = "VDDQ";
+				regulator-min-microvolt = <1300000>;
+				regulator-max-microvolt = <2150000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+
+			vcc: dcdc3 {
+				regulator-name = "VCC";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vcc_3v3: ldo1 {
+				regulator-name = "VCC_3V3";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			avcc: ldo2 {
+				regulator-name = "AVCC";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			vdd_1v8: ldo3 {
+				regulator-name = "VDD_1V8";
+				regulator-min-microvolt = <1500000>;
+				regulator-max-microvolt = <2000000>;
+				regulator-always-on;
+			};
+
+			vcc_3v1: ldo5 {
+				regulator-name = "VCC_3V1";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			avdd: ldo6 {
+				regulator-name = "AVDD";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-always-on;
+			};
+
+			sens_1v8: ldo7 {
+				regulator-name = "SENS_1V8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
+
+			ldo8: ldo8 {
+				regulator-name = "LDO8";
+				regulator-min-microvolt = <2300000>;
+				regulator-max-microvolt = <3300000>;
+			};
+
+			svcc: ldo11 {
+				regulator-name = "SVCC";
+				regulator-min-microvolt = <2600000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+			};
+
+			rtc_vdd: ldo12 {
+				regulator-name = "RTC_VDD";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+
+			sd_vcc: switchldo1 {
+				regulator-name = "SD_VCC";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-always-on;
+				regulator-boot-on;
+			};
+		};
+	};
 };
 
 &i2c1 {