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
