linux-kernel - Re: [PATCH v1 2/3] arm64: dts: mt7986: change cooling trips

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Date:   Wed, 25 Oct 2023 14:28:39 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Frank Wunderlich <linux@...web.de>,
        linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Daniel Golle <daniel@...rotopia.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 2/3] arm64: dts: mt7986: change cooling trips

Il 20/08/23 17:31, Frank Wunderlich ha scritto:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> Add Critical and hot trips for emergency system shutdown and limiting
> system load.
> 
> Change passive trip to active to make sure fan is activated on the
> lowest trip.
> 
> Fixes: 1f5be05132f3 ("arm64: dts: mt7986: add thermal-zones")
> Suggested-by: Daniel Golle <daniel@...rotopia.org>
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> ---
>   arch/arm64/boot/dts/mediatek/mt7986a.dtsi | 20 ++++++++++++++++----
>   1 file changed, 16 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> index 207510abda89..36d8945400df 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
> @@ -614,22 +614,34 @@ cpu_thermal: cpu-thermal {
>   			thermal-sensors = <&thermal 0>;
>   
>   			trips {
> +				cpu_trip_crit: crit {
> +					temperature = <125000>;
> +					hysteresis = <2000>;
> +					type = "critical";
> +				};
> +
> +				cpu_trip_hot: hot {
> +					temperature = <120000>;
> +					hysteresis = <2000>;
> +					type = "hot";
> +				};
> +
>   				cpu_trip_active_high: active-high {
>   					temperature = <115000>;
>   					hysteresis = <2000>;
>   					type = "active";
>   				};
>   
> -				cpu_trip_active_low: active-low {
> +				cpu_trip_active_med: active-med {
>   					temperature = <85000>;
>   					hysteresis = <2000>;
>   					type = "active";
>   				};
>   
> -				cpu_trip_passive: passive {

Rule of thumb is that each commit has to build on its own: this will break build
because of mt7986a-bananapi-bpi-r3.dts referencing the now unexistant
cpu_trip_passive phandle.

Solving that is simple.
Merge commit [2/3] and [3/3] in a single commit.

Obviously, retain both fixes tags :-)

Cheers,
Angelo