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authorDmitry Osipenko <digetx@gmail.com>2021-03-02 13:09:53 +0100
committerThierry Reding <treding@nvidia.com>2021-03-24 16:07:11 +0100
commit107f2c6995b6e5fb4b3138145b9a40d81f843c42 (patch)
tree2d27f18d2bd85b141d2c67e83c14130096550822 /arch/arm/boot/dts/tegra30-cardhu.dtsi
parentARM: tegra: cardhu: Support CPU frequency and voltage scaling on all board va... (diff)
downloadlinux-107f2c6995b6e5fb4b3138145b9a40d81f843c42.tar.xz
linux-107f2c6995b6e5fb4b3138145b9a40d81f843c42.zip
ARM: tegra: cardhu: Support CPU thermal throttling
Enable CPU thermal throttling on Tegra30 Cardhu board. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm/boot/dts/tegra30-cardhu.dtsi')
-rw-r--r--arch/arm/boot/dts/tegra30-cardhu.dtsi43
1 files changed, 42 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi
index 42ea949953c7..844ed700c0e6 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -1,5 +1,6 @@
// 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"
@@ -341,12 +342,13 @@
};
};
- 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 {
@@ -440,21 +442,25 @@
cpu0: cpu@0 {
cpu-supply = <&vddctrl_reg>;
operating-points-v2 = <&cpu0_opp_table>;
+ #cooling-cells = <2>;
};
cpu1: cpu@1 {
cpu-supply = <&vddctrl_reg>;
operating-points-v2 = <&cpu0_opp_table>;
+ #cooling-cells = <2>;
};
cpu2: cpu@2 {
cpu-supply = <&vddctrl_reg>;
operating-points-v2 = <&cpu0_opp_table>;
+ #cooling-cells = <2>;
};
cpu3: cpu@3 {
cpu-supply = <&vddctrl_reg>;
operating-points-v2 = <&cpu0_opp_table>;
+ #cooling-cells = <2>;
};
};
@@ -637,6 +643,41 @@
<&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>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
gpio-keys {
compatible = "gpio-keys";