[PATCH v1 26/30] ARM: tegra: ventana: Add voltage supplies to DVFS-capable devices

[Dmitry Osipenko]

Add voltage supplies to DVFS-capable devices in order to enable
system-wide voltage scaling and allow CORE/RTC regulators to go lower.

Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
 arch/arm/boot/dts/tegra20-ventana.dts | 65 +++++++++++++++++++++++----
 1 file changed, 56 insertions(+), 9 deletions(-)

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index b158771ac0b7..d5d90605e649 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -23,7 +23,19 @@ memory@0 {
 	};
 
 	host1x@50000000 {
+		core-supply = <&vdd_core>;
+
+		gr2d@54140000 {
+			core-supply = <&vdd_core>;
+		};
+
+		gr3d@54180000 {
+			core-supply = <&vdd_core>;
+		};
+
 		dc@54200000 {
+			core-supply = <&vdd_core>;
+
 			rgb {
 				status = "okay";
 
@@ -31,11 +43,16 @@ rgb {
 			};
 		};
 
+		dc@54240000 {
+			core-supply = <&vdd_core>;
+		};
+
 		hdmi@54280000 {
 			status = "okay";
 
 			vdd-supply = <&hdmi_vdd_reg>;
 			pll-supply = <&hdmi_pll_reg>;
+			core-supply = <&vdd_core>;
 
 			nvidia,ddc-i2c-bus = <&hdmi_ddc>;
 			nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
@@ -43,6 +60,10 @@ hdmi@54280000 {
 		};
 	};
 
+	vde@6001a000 {
+		core-supply = <&vdd_core>;
+	};
+
 	pinmux@70000014 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&state_default>;
@@ -419,18 +440,28 @@ sys_reg: sys {
 					regulator-always-on;
 				};
 
-				sm0 {
+				vdd_core: sm0 {
 					regulator-name = "vdd_sm0,vdd_core";
-					regulator-min-microvolt = <1200000>;
-					regulator-max-microvolt = <1200000>;
+					regulator-min-microvolt = <950000>;
+					regulator-max-microvolt = <1300000>;
+					regulator-coupled-with = <&rtc_vdd &vdd_cpu>;
+					regulator-coupled-max-spread = <170000 550000>;
 					regulator-always-on;
+					regulator-boot-on;
+
+					nvidia,tegra-core-regulator;
 				};
 
-				sm1 {
+				vdd_cpu: sm1 {
 					regulator-name = "vdd_sm1,vdd_cpu";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
+					regulator-min-microvolt = <750000>;
+					regulator-max-microvolt = <1125000>;
+					regulator-coupled-with = <&vdd_core &rtc_vdd>;
+					regulator-coupled-max-spread = <550000 550000>;
 					regulator-always-on;
+					regulator-boot-on;
+
+					nvidia,tegra-cpu-regulator;
 				};
 
 				sm2_reg: sm2 {
@@ -449,10 +480,16 @@ ldo1 {
 					regulator-always-on;
 				};
 
-				ldo2 {
+				rtc_vdd: ldo2 {
 					regulator-name = "vdd_ldo2,vdd_rtc";
-					regulator-min-microvolt = <1200000>;
-					regulator-max-microvolt = <1200000>;
+					regulator-min-microvolt = <950000>;
+					regulator-max-microvolt = <1300000>;
+					regulator-coupled-with = <&vdd_core &vdd_cpu>;
+					regulator-coupled-max-spread = <170000 550000>;
+					regulator-always-on;
+					regulator-boot-on;
+
+					nvidia,tegra-rtc-regulator;
 				};
 
 				ldo3 {
@@ -526,8 +563,13 @@ pmc@7000e400 {
 		nvidia,sys-clock-req-active-high;
 	};
 
+	memory-controller@7000f400 {
+		core-supply = <&vdd_core>;
+	};
+
 	usb@c5000000 {
 		status = "okay";
+		core-supply = <&vdd_core>;
 	};
 
 	usb-phy@c5000000 {
@@ -538,6 +580,7 @@ usb@c5004000 {
 		status = "okay";
 		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 1)
 			GPIO_ACTIVE_LOW>;
+		core-supply = <&vdd_core>;
 	};
 
 	usb-phy@c5004000 {
@@ -548,6 +591,7 @@ usb-phy@c5004000 {
 
 	usb@c5008000 {
 		status = "okay";
+		core-supply = <&vdd_core>;
 	};
 
 	usb-phy@c5008000 {
@@ -559,6 +603,7 @@ mmc@c8000000 {
 		power-gpios = <&gpio TEGRA_GPIO(K, 6) GPIO_ACTIVE_HIGH>;
 		bus-width = <4>;
 		keep-power-in-suspend;
+		core-supply = <&vdd_core>;
 	};
 
 	mmc@c8000400 {
@@ -567,12 +612,14 @@ mmc@c8000400 {
 		wp-gpios = <&gpio TEGRA_GPIO(H, 1) GPIO_ACTIVE_HIGH>;
 		power-gpios = <&gpio TEGRA_GPIO(I, 6) GPIO_ACTIVE_HIGH>;
 		bus-width = <4>;
+		core-supply = <&vdd_core>;
 	};
 
 	mmc@c8000600 {
 		status = "okay";
 		bus-width = <8>;
 		non-removable;
+		core-supply = <&vdd_core>;
 	};
 
 	backlight: backlight {
-- 
2.27.0