[PATCH v1 01/13] ARM: tegra: ventana: Support CPU and Core voltage scaling

Dmitry Osipenko
2021-01-21T18:38:56Z

Support CPU and Core voltage scaling on Tegra20 Ventana board.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra20-ventana.dts | 37 ++++++++++++++++++++-------
1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index 055334ae3d28..02b94ed722d0 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -4,6 +4,7 @@
#include <dt-bindings/input/input.h>
#include "tegra20.dtsi"
#include "tegra20-cpu-opp.dtsi"
+#include "tegra20-cpu-opp-microvolt.dtsi"

/ {
model = "NVIDIA Tegra20 Ventana evaluation board";
@@ -420,18 +421,28 @@ 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 {
@@ -450,10 +461,16 @@ 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 {
@@ -595,10 +612,12 @@ clk32k_in: clock@0 {

cpus {
cpu0: cpu@0 {
+ cpu-supply = <&vdd_cpu>;
operating-points-v2 = <&cpu0_opp_table>;
};

cpu@1 {
+ cpu-supply = <&vdd_cpu>;
operating-points-v2 = <&cpu0_opp_table>;
};
};
--
2.29.2