linux-kernel - Re: [PATCH] arm64: dts: meson: vim3: reduce cpu thermal fan trigger temperature

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Date:   Fri, 11 Jun 2021 08:44:27 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     xieqinick@...il.com, robh+dt@...nel.org, khilman@...libre.com,
        jbrunet@...libre.com, martin.blumenstingl@...glemail.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     nick@...das.com, artem@...das.com
Subject: Re: [PATCH] arm64: dts: meson: vim3: reduce cpu thermal fan trigger
 temperature

Hi Nick,

On 09/06/2021 03:28, xieqinick@...il.com wrote:
> From: Nick Xie <nick@...das.com>
> 
> Reduce the MCU FAN trigger temperature from
> 80 degree centigrade to 50 degree centigrade.

Can you add some more rationale to this change ?

> 
> Signed-off-by: Nick Xie <nick@...das.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> index 66d67524b031..a9c34fee91f4 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> @@ -256,7 +256,7 @@ &cecb_AO {
>  &cpu_thermal {
>  	trips {
>  		cpu_active: cpu-active {
> -			temperature = <80000>; /* millicelsius */
> +			temperature = <50000>; /* millicelsius */
>  			hysteresis = <2000>; /* millicelsius */
>  			type = "active";
>  		};
> 

With that:
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>