[PATCH v1 27/30] ARM: tegra: paz00: Add voltage supplies to DVFS-capable devices

Dmitry Osipenko
2020-11-04T23:46:59Z

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

Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra20-paz00.dts | 40 ++++++++++++++++++++++++-----
1 file changed, 33 insertions(+), 7 deletions(-)

diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index 52a81d888424..d497eb149fba 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts
@@ -26,7 +26,19 @@ memory@0 {
};

host1x@50000000 {
+ core-supply = <&core_vdd_reg>;
+
+ gr2d@54140000 {
+ core-supply = <&core_vdd_reg>;
+ };
+
+ gr3d@54180000 {
+ core-supply = <&core_vdd_reg>;
+ };
+
dc@54200000 {
+ core-supply = <&core_vdd_reg>;
+
rgb {
status = "okay";

@@ -34,11 +46,16 @@ rgb {
};
};

+ dc@54240000 {
+ core-supply = <&core_vdd_reg>;
+ };
+
hdmi@54280000 {
status = "okay";

vdd-supply = <&hdmi_vdd_reg>;
pll-supply = <&hdmi_pll_reg>;
+ core-supply = <&core_vdd_reg>;

nvidia,ddc-i2c-bus = <&hdmi_ddc>;
nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
@@ -46,6 +63,10 @@ hdmi@54280000 {
};
};

+ vde@6001a000 {
+ core-supply = <&core_vdd_reg>;
+ };
+
pinmux@70000014 {
pinctrl-names = "default";
pinctrl-0 = <&state_default>;
@@ -389,10 +410,10 @@ sys_reg: sys {

core_vdd_reg: sm0 {
regulator-name = "+1.2vs_sm0,vdd_core";
- regulator-min-microvolt = <1200000>;
- regulator-max-microvolt = <1225000>;
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
regulator-coupled-with = <&rtc_vdd_reg &cpu_vdd_reg>;
- regulator-coupled-max-spread = <170000 450000>;
+ regulator-coupled-max-spread = <170000 550000>;
regulator-always-on;

nvidia,tegra-core-regulator;
@@ -403,7 +424,7 @@ cpu_vdd_reg: sm1 {
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1100000>;
regulator-coupled-with = <&core_vdd_reg &rtc_vdd_reg>;
- regulator-coupled-max-spread = <450000 450000>;
+ regulator-coupled-max-spread = <550000 550000>;
regulator-always-on;

nvidia,tegra-cpu-regulator;
@@ -427,10 +448,10 @@ ldo1 {

rtc_vdd_reg: ldo2 {
regulator-name = "+1.2vs_ldo2,vdd_rtc";
- regulator-min-microvolt = <1200000>;
- regulator-max-microvolt = <1225000>;
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
regulator-coupled-with = <&core_vdd_reg &cpu_vdd_reg>;
- regulator-coupled-max-spread = <170000 450000>;
+ regulator-coupled-max-spread = <170000 550000>;
regulator-always-on;

nvidia,tegra-rtc-regulator;
@@ -519,6 +540,7 @@ usb@c5000000 {
compatible = "nvidia,tegra20-udc";
status = "okay";
dr_mode = "peripheral";
+ core-supply = <&core_vdd_reg>;
};

usb-phy@c5000000 {
@@ -529,6 +551,7 @@ usb@c5004000 {
status = "okay";
nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 0)
GPIO_ACTIVE_LOW>;
+ core-supply = <&core_vdd_reg>;
};

usb-phy@c5004000 {
@@ -539,6 +562,7 @@ usb-phy@c5004000 {

usb@c5008000 {
status = "okay";
+ core-supply = <&core_vdd_reg>;
};

usb-phy@c5008000 {
@@ -551,12 +575,14 @@ mmc@c8000000 {
wp-gpios = <&gpio TEGRA_GPIO(H, 1) GPIO_ACTIVE_HIGH>;
power-gpios = <&gpio TEGRA_GPIO(V, 1) GPIO_ACTIVE_HIGH>;
bus-width = <4>;
+ core-supply = <&core_vdd_reg>;
};

mmc@c8000600 {
status = "okay";
bus-width = <8>;
non-removable;
+ core-supply = <&core_vdd_reg>;
};

backlight: backlight {
--
2.27.0