Re: [PATCH v3 25/30] ARM: dts: sun8i: h3: add thermal zone to H3

Maxime Ripard
2018-08-31T09:14:10Z

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On Thu, Aug 30, 2018 at 05:45:13PM +0200, Philipp Rossak wrote:
> This patch adds the thermal zones to the H3. We have only one sensor and
> that is placed in the cpu.
>
> Signed-off-by: Philipp Rossak <embed3d@gmail.com>
> ---
> arch/arm/boot/dts/sun8i-h3.dtsi | 31 +++++++++++++++++++++++++++++++
> arch/arm/boot/dts/sunxi-h3-h5.dtsi | 1 +
> 2 files changed, 32 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
> index 5b7994cb1471..954848d5df50 100644
> --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> @@ -78,6 +78,8 @@
> clock-names = "cpu";
> operating-points-v2 = <&cpu0_opp_table>;
> #cooling-cells = <2>;
> + cooling-min-level = <0>;
> + cooling-max-level = <15>;
> };
>
> cpu@1 {
> @@ -102,6 +104,35 @@
> };
> };
>
> + thermal-zones {
> + cpu-thermal {
> + /* milliseconds */
> + polling-delay-passive = <250>;
> + polling-delay = <1000>;
> + thermal-sensors = <&ths>;
> +
> + trips {
> + cpu_hot_trip: cpu-warm {
> + temperature = <65000>;
> + hysteresis = <2000>;
> + type = "passive";
> + };
> + cpu_very_hot_trip: cpu-very-hot {
> + temperature = <90000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };

Where are those trip points coming from?

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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