Enable CPU voltage scaling and thermal throttling on Tegra30 Cardhu board.
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
arch/arm/boot/dts/tegra30-cardhu.dtsi | 61 ++++++++++++++++++++++++++-
1 file changed, 60 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi
b/arch/arm/boot/dts/tegra30-cardhu.dtsi
index d74c9ca78a7f..08c0ea4e6228 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -1,6 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
#include <dt-bindings/input/input.h>
+#include <dt-bindings/thermal/thermal.h>
#include "tegra30.dtsi"
+#include "tegra30-cpu-opp.dtsi"
+#include "tegra30-cpu-opp-microvolt.dtsi"
/**
* This file contains common DT entry for all fab version of Cardhu.
@@ -339,12 +342,13 @@ ldo8_reg: ldo8 {
};
};
- temperature-sensor@4c {
+ nct1008: temperature-sensor@4c {
compatible = "onnn,nct1008";
reg = <0x4c>;
vcc-supply = <&sys_3v3_reg>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(CC, 2) IRQ_TYPE_LEVEL_LOW>;
+ #thermal-sensor-cells = <1>;
};
vdd_core: tps62361@60 {
@@ -438,6 +442,29 @@ clk32k_in: clock@0 {
#clock-cells = <0>;
};
+ cpus {
+ cpu0: cpu@0 {
+ cpu-supply = <&vddctrl_reg>;
+ operating-points-v2 = <&cpu0_opp_table>;
+ #cooling-cells = <2>;
+ };
+
+ cpu@1 {
+ cpu-supply = <&vddctrl_reg>;
+ operating-points-v2 = <&cpu0_opp_table>;
+ };
+
+ cpu@2 {
+ cpu-supply = <&vddctrl_reg>;
+ operating-points-v2 = <&cpu0_opp_table>;
+ };
+
+ cpu@3 {
+ cpu-supply = <&vddctrl_reg>;
+ operating-points-v2 = <&cpu0_opp_table>;
+ };
+ };
+
panel: panel {
compatible = "chunghwa,claa101wb01";
ddc-i2c-bus = <&panelddc>;
@@ -617,6 +644,38 @@ sound {
<&tegra_car TEGRA30_CLK_EXTERN1>;
};
+ thermal-zones {
+ cpu-thermal {
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <5000>; /* milliseconds */
+
+ thermal-sensors = <&nct1008 1>;
+
+ trips {
+ trip0: cpu-alert0 {
+ /* throttle at 57C until temperature
drops to 56.8C */
+ temperature = <57000>;
+ hysteresis = <200>;
+ type = "passive";
+ };
+
+ trip1: cpu-crit {
+ /* shut down at 60C */
+ temperature = <60000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&trip0>;
+ cooling-device = <&cpu0
THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
gpio-keys {
compatible = "gpio-keys";
--
2.29.2
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