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| author | Dmitry Osipenko <digetx@gmail.com> | 2021-03-02 13:09:53 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-03-24 16:07:11 +0100 |
| commit | 107f2c6995b6e5fb4b3138145b9a40d81f843c42 (patch) | |
| tree | 2d27f18d2bd85b141d2c67e83c14130096550822 | |
| parent | ARM: tegra: cardhu: Support CPU frequency and voltage scaling on all board va... (diff) | |
| download | linux-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>
| -rw-r--r-- | arch/arm/boot/dts/tegra30-cardhu.dtsi | 43 |
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"; |