[v2,46/48] ARM: tegra: ventana: Enable core voltage scaling

Commit Message

Dmitry Osipenko Dec. 17, 2020, 6:06 p.m. UTC

Allow lower core voltages on Ventana board.

Signed-off-by: Dmitry Osipenko <[e-mail]>
---
 arch/arm/boot/dts/tegra20-ventana.dts | 32 ++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 8 deletions(-)

Patch

diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
index 0b03b3b0fd0c..14ace2ef749c 100644
--- a/arch/arm/boot/dts/tegra20-ventana.dts
+++ b/arch/arm/boot/dts/tegra20-ventana.dts
@@ -422,16 +422,26 @@  sys_reg: sys {
 
 				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 +460,16 @@  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 {