[PATCH v2 48/48] ARM: tegra: cardhu: Support CPU voltage scaling and thermal throttling

[Daniel Lezcano]

On 17/12/2020 19:06, Dmitry Osipenko wrote:
> Enable CPU voltage scaling and thermal throttling on Tegra30 Cardhu board.
> 
> Signed-off-by: Dmitry Osipenko <digetx at gmail.com>
> ---

Same comments as 47/48



>  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 at 4c {
> +		nct1008: temperature-sensor at 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 at 60 {
> @@ -438,6 +442,29 @@ clk32k_in: clock at 0 {
>  		#clock-cells = <0>;
>  	};
>  
> +	cpus {
> +		cpu0: cpu at 0 {
> +			cpu-supply = <&vddctrl_reg>;
> +			operating-points-v2 = <&cpu0_opp_table>;
> +			#cooling-cells = <2>;
> +		};
> +
> +		cpu at 1 {
> +			cpu-supply = <&vddctrl_reg>;
> +			operating-points-v2 = <&cpu0_opp_table>;
> +		};
> +
> +		cpu at 2 {
> +			cpu-supply = <&vddctrl_reg>;
> +			operating-points-v2 = <&cpu0_opp_table>;
> +		};
> +
> +		cpu at 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";
>  
> 


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