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 {