linux-kernel - Re: [PATCH 4/6] arm64: dts: meson: sei510: Add minimal thermal zone

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Date:   Wed, 31 Jul 2019 14:51:39 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Guillaume La Roque <glaroque@...libre.com>,
        daniel.lezcano@...aro.org, khilman@...libre.com
Cc:     devicetree@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH 4/6] arm64: dts: meson: sei510: Add minimal thermal zone

On 31/07/2019 14:14, Guillaume La Roque wrote:
> Add minimal thermal zone for DDR and CPU sensor
> 
> Signed-off-by: Guillaume La Roque <glaroque@...libre.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
> index c7a87368850b..79ae514e238d 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
> @@ -33,6 +33,19 @@
>  		ethernet0 = &ethmac;
>  	};
>  
> +	thermal-zones {
> +		soc_thermal {
> +			polling-delay = <1000>;
> +			polling-delay-ptripsassive = <100>;
> +			thermal-sensors = <&cpu_temp 0>;


Seems the trips & cooling-maps are required as described in thermal.txt

For the soc_thermal zone it's esy to add a cooling map with the CPU
and cooling devices, but for the ddr_thermal, no idea if we can use the
CPUs within 2 cooling maps.

> +		};

I would add a blank line between the zones, same for other files.


> +		ddr_thermal {
> +			polling-delay = <1000>;
> +			polling-delay-passive = <100>;
> +			thermal-sensors = <&ddr_temp 1>;
> +		};
> +	};
> +
>  	mono_dac: audio-codec-0 {
>  		compatible = "maxim,max98357a";
>  		#sound-dai-cells = <0>;
>