Re: [PATCH] arm64: dts: renesas: r8a77961: Add thermal nodes

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Hi Geert,

Thanks for your work.

On 2020-03-06 12:00:25 +0100, Geert Uytterhoeven wrote:
> Add a device node for the Thermal Sensor/Chip Internal Voltage Monitor
> in the R-Car M3-W+ (R8A77961) SoC, and describe the thermal zones.
> 
> According to the R-Car Gen3 Hardware Manual Errata for Revision 2.00 of
> Jan 31, 2020, the thermal parameters for R-Car M3-W+ are the same as for
> R-Car M3-W.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> ---
> It's a bit cold in Magnus' lab:
> 
> / # grep . /sys/devices/virtual/thermal/thermal_zone?/temp
> /sys/devices/virtual/thermal/thermal_zone0/temp:17000
> /sys/devices/virtual/thermal/thermal_zone1/temp:19000
> /sys/devices/virtual/thermal/thermal_zone2/temp:18000
> ---
>  arch/arm64/boot/dts/renesas/r8a77961.dtsi | 80 +++++++++++++++++++++++
>  1 file changed, 80 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a77961.dtsi b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> index b6915319a61c8bf0..2f016458f57d3a33 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77961.dtsi
> @@ -474,6 +474,20 @@
>  			#power-domain-cells = <1>;
>  		};
>  
> +		tsc: thermal@e6198000 {
> +			compatible = "renesas,r8a77961-thermal";
> +			reg = <0 0xe6198000 0 0x100>,
> +			      <0 0xe61a0000 0 0x100>,
> +			      <0 0xe61a8000 0 0x100>;
> +			interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 522>;
> +			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
> +			resets = <&cpg 522>;
> +			#thermal-sensor-cells = <1>;
> +		};
> +
>  		intc_ex: interrupt-controller@e61c0000 {
>  			#interrupt-cells = <2>;
>  			interrupt-controller;
> @@ -785,6 +799,7 @@
>  			status = "disabled";
>  		};
>  
> +

This don't looks like it's needed :-) With this fixed,

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>

>  		pwm1: pwm@e6e31000 {
>  			reg = <0 0xe6e31000 0 8>;
>  			#pwm-cells = <2>;
> @@ -1073,6 +1088,71 @@
>  		};
>  	};
>  
> +	thermal-zones {
> +		sensor_thermal1: sensor-thermal1 {
> +			polling-delay-passive = <250>;
> +			polling-delay = <1000>;
> +			thermal-sensors = <&tsc 0>;
> +			sustainable-power = <3874>;
> +
> +			trips {
> +				sensor1_crit: sensor1-crit {
> +					temperature = <120000>;
> +					hysteresis = <1000>;
> +					type = "critical";
> +				};
> +			};
> +		};
> +
> +		sensor_thermal2: sensor-thermal2 {
> +			polling-delay-passive = <250>;
> +			polling-delay = <1000>;
> +			thermal-sensors = <&tsc 1>;
> +			sustainable-power = <3874>;
> +
> +			trips {
> +				sensor2_crit: sensor2-crit {
> +					temperature = <120000>;
> +					hysteresis = <1000>;
> +					type = "critical";
> +				};
> +			};
> +		};
> +
> +		sensor_thermal3: sensor-thermal3 {
> +			polling-delay-passive = <250>;
> +			polling-delay = <1000>;
> +			thermal-sensors = <&tsc 2>;
> +			sustainable-power = <3874>;
> +
> +			cooling-maps {
> +				map0 {
> +					trip = <&target>;
> +					cooling-device = <&a57_0 2 4>;
> +					contribution = <1024>;
> +				};
> +				map1 {
> +					trip = <&target>;
> +					cooling-device = <&a53_0 0 2>;
> +					contribution = <1024>;
> +				};
> +			};
> +			trips {
> +				target: trip-point1 {
> +					temperature = <100000>;
> +					hysteresis = <1000>;
> +					type = "passive";
> +				};
> +
> +				sensor3_crit: sensor3-crit {
> +					temperature = <120000>;
> +					hysteresis = <1000>;
> +					type = "critical";
> +				};
> +			};
> +		};
> +	};
> +
>  	timer {
>  		compatible = "arm,armv8-timer";
>  		interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
> -- 
> 2.17.1
> 

-- 
Regards,
Niklas Söderlund



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