linux-kernel - Re: [PATCH v2 2/8] arm64: dts: qcom: add initial SM8650 dtsi

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Date:   Sat, 18 Nov 2023 01:21:55 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/8] arm64: dts: qcom: add initial SM8650 dtsi

On 6.11.2023 09:39, Neil Armstrong wrote:
> Add initial DTSI for the Qualcomm SM8650 platform,
> only contains nodes which doesn't depend on interconnect.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
Just a couple nits

[...]

> +		cpu2-bottom-thermal {
> +			polling-delay-passive = <0>;
> +			polling-delay = <0>;
> +			thermal-sensors = <&tsens0 6>;
> +
> +			trips {
> +				trip-point0 {
> +					temperature = <90000>;
> +					hysteresis = <2000>;
> +					type = "passive";
> +				};
> +
> +				trip-point1 {
> +					temperature = <95000>;
> +					hysteresis = <2000>;
> +					type = "passive";
> +				};
> +
> +				 cpu-critical {
indentation

> +					temperature = <110000>;
> +					hysteresis = <1000>;
> +					type = "critical";
> +				};
> +			};
> +		};
[...]
> +
> +		nsphmx-0-thermal {
> +			polling-delay-passive = <10>;
> +			polling-delay = <0>;
> +			thermal-sensors = <&tsens2 8>;
> +
> +			trips {
> +				thermal-engine-config {
> +					temperature = <125000>;
> +					hysteresis = <1000>;
> +					type = "passive";
> +				};
> +
> +				thermal-hal-config {
> +					temperature = <125000>;
> +					hysteresis = <1000>;
> +					type = "passive";
> +				};
The two above nodes (which are repeated under many tzones) sound made up
just to be consumed by a bunch of android binaries

Or at least the second one, maybe "thermal engine" is some hw/fw part?

> +
> +				reset-mon-config {
"reset mon" is not a very enticing name either..

> +					temperature = <115000>;
> +					hysteresis = <5000>;
> +					type = "passive";
> +				};
> +
> +				junction-config {
...which leads me to believe only this one is meaningful

same goes for all tzones that have a similar mess :/
> +					temperature = <95000>;
> +					hysteresis = <5000>;
> +					type = "passive";
> +				};

Konrad