ARM: dt: tegra: ventana: add regulators

Ventana uses a TPS6586x regulator. Instantiate this, and hook up a
couple of fixed GPIO-controlled regulators too.

The data was chosen to match the PMIC HW defaults, with the following
exception:

ldo6: The HW default is 2.85v. The schematics are unlabelled. Internal
research indicates that 1.8v is correct. Our downstream kernel also uses
1.8v.

Portions based on work by Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra20-ventana.dts

@@ -289,6 +289,156 @@ i2c@7000c500 {
 	i2c@7000d000 {
 		status = "okay";
 		clock-frequency = <400000>;
+
+		pmic: tps6586x@34 {
+			compatible = "ti,tps6586x";
+			reg = <0x34>;
+			interrupts = <0 86 0x4>;
+
+			#gpio-cells = <2>;
+			gpio-controller;
+
+			sys-supply = <&vdd_5v0_reg>;
+			vin-sm0-supply = <&sys_reg>;
+			vin-sm1-supply = <&sys_reg>;
+			vin-sm2-supply = <&sys_reg>;
+			vinldo01-supply = <&sm2_reg>;
+			vinldo23-supply = <&sm2_reg>;
+			vinldo4-supply = <&sm2_reg>;
+			vinldo678-supply = <&sm2_reg>;
+			vinldo9-supply = <&sm2_reg>;
+
+			regulators {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				sys_reg: regulator@0 {
+					reg = <0>;
+					regulator-compatible = "sys";
+					regulator-name = "vdd_sys";
+					regulator-always-on;
+				};
+
+				regulator@1 {
+					reg = <1>;
+					regulator-compatible = "sm0";
+					regulator-name = "vdd_sm0,vdd_core";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+				};
+
+				regulator@2 {
+					reg = <2>;
+					regulator-compatible = "sm1";
+					regulator-name = "vdd_sm1,vdd_cpu";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				sm2_reg: regulator@3 {
+					reg = <3>;
+					regulator-compatible = "sm2";
+					regulator-name = "vdd_sm2,vin_ldo*";
+					regulator-min-microvolt = <3700000>;
+					regulator-max-microvolt = <3700000>;
+					regulator-always-on;
+				};
+
+				/* LDO0 is not connected to anything */
+
+				regulator@5 {
+					reg = <5>;
+					regulator-compatible = "ldo1";
+					regulator-name = "vdd_ldo1,avdd_pll*";
+					regulator-min-microvolt = <1100000>;
+					regulator-max-microvolt = <1100000>;
+					regulator-always-on;
+				};
+
+				regulator@6 {
+					reg = <6>;
+					regulator-compatible = "ldo2";
+					regulator-name = "vdd_ldo2,vdd_rtc";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+				};
+
+				regulator@7 {
+					reg = <7>;
+					regulator-compatible = "ldo3";
+					regulator-name = "vdd_ldo3,avdd_usb*";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+
+				regulator@8 {
+					reg = <8>;
+					regulator-compatible = "ldo4";
+					regulator-name = "vdd_ldo4,avdd_osc,vddio_sys";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				regulator@9 {
+					reg = <9>;
+					regulator-compatible = "ldo5";
+					regulator-name = "vdd_ldo5,vcore_mmc";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+					regulator-always-on;
+				};
+
+				regulator@10 {
+					reg = <10>;
+					regulator-compatible = "ldo6";
+					regulator-name = "vdd_ldo6,avdd_vdac";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				regulator@11 {
+					reg = <11>;
+					regulator-compatible = "ldo7";
+					regulator-name = "vdd_ldo7,avdd_hdmi,vdd_fuse";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+				};
+
+				regulator@12 {
+					reg = <12>;
+					regulator-compatible = "ldo8";
+					regulator-name = "vdd_ldo8,avdd_hdmi_pll";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+				};
+
+				regulator@13 {
+					reg = <13>;
+					regulator-compatible = "ldo9";
+					regulator-name = "vdd_ldo9,avdd_2v85,vdd_ddr_rx";
+					regulator-min-microvolt = <2850000>;
+					regulator-max-microvolt = <2850000>;
+					regulator-always-on;
+				};
+
+				regulator@14 {
+					reg = <14>;
+					regulator-compatible = "ldo_rtc";
+					regulator-name = "vdd_rtc_out,vdd_cell";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+				};
+			};
+		};
+	};
+
+	pmc {
+		nvidia,invert-interrupt;
 	};
 
 	usb@c5000000 {
@@ -317,6 +467,60 @@ sdhci@c8000600 {
 		bus-width = <8>;
 	};
 
+	regulators {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdd_5v0_reg: regulator@0 {
+			compatible = "regulator-fixed";
+			reg = <0>;
+			regulator-name = "vdd_5v0";
+			regulator-min-microvolt = <5000000>;
+			regulator-max-microvolt = <5000000>;
+			regulator-always-on;
+		};
+
+		regulator@1 {
+			compatible = "regulator-fixed";
+			reg = <1>;
+			regulator-name = "vdd_1v5";
+			regulator-min-microvolt = <1500000>;
+			regulator-max-microvolt = <1500000>;
+			gpio = <&pmic 0 0>;
+		};
+
+		regulator@2 {
+			compatible = "regulator-fixed";
+			reg = <2>;
+			regulator-name = "vdd_1v2";
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+			gpio = <&pmic 1 0>;
+			enable-active-high;
+		};
+
+		regulator@3 {
+			compatible = "regulator-fixed";
+			reg = <3>;
+			regulator-name = "vdd_pnl";
+			regulator-min-microvolt = <2800000>;
+			regulator-max-microvolt = <2800000>;
+			gpio = <&gpio 22 0>; /* gpio PC6 */
+			enable-active-high;
+		};
+
+		regulator@4 {
+			compatible = "regulator-fixed";
+			reg = <4>;
+			regulator-name = "vdd_bl";
+			regulator-min-microvolt = <2800000>;
+			regulator-max-microvolt = <2800000>;
+			gpio = <&gpio 176 0>; /* gpio PW0 */
+			enable-active-high;
+		};
+	};
+
 	sound {
 		compatible = "nvidia,tegra-audio-wm8903-ventana",
 			     "nvidia,tegra-audio-wm8903";