Enable CPU voltage scaling and thermal throttling on Tegra30 Cardhu board.
Signed-off-by: Dmitry Osipenko digetx@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";