linux-kernel - Re: [PATCH v3 03/10] arm64: dts: qcom: kaanapali: Add TSENS and thermal zones

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Message-ID: <4c44mmkpsnj4cn2eh2xzraiw73xmhtx4qm3xiyhecm4vyou7os@skyj646r63d2>
Date: Thu, 15 Jan 2026 09:09:40 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Jingyi Wang <jingyi.wang@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, aiqun.yu@....qualcomm.com,
        tingwei.zhang@....qualcomm.com, trilok.soni@....qualcomm.com,
        yijie.yang@....qualcomm.com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        20260114-knp-remoteproc-v4-0-fcf0b04d01af@....qualcomm.com,
        Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@....qualcomm.com>
Subject: Re: [PATCH v3 03/10] arm64: dts: qcom: kaanapali: Add TSENS and
 thermal zones

On Wed, Jan 14, 2026 at 10:49:05PM -0800, Jingyi Wang wrote:
> From: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@....qualcomm.com>
> 
> The Kaanapali includes seven TSENS instances, with a total of 55 thermal
> sensors distributed across various locations on the SoC.
> 
> The TSENS max/reset threshold is configured to 130°C in the hardware.
> Enable all TSENS instances, and define the thermal zones with a critical
> trip at 125°C
> 
> Signed-off-by: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@....qualcomm.com>
> Signed-off-by: Jingyi Wang <jingyi.wang@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/kaanapali.dtsi | 745 ++++++++++++++++++++++++++++++++
>  1 file changed, 745 insertions(+)
> 
> @@ -4795,6 +4879,667 @@ pdp_tx: scp-sram-section@100 {
>  		};
>  	};
>  
> +	thermal-zones {
> +		cpullc-0-0-thermal {
> +			thermal-sensors = <&tsens0 0>;
> +
> +			trips {
> +				cpullc-0-0-critical {
> +					temperature = <125000>;
> +					hysteresis = <0>;
> +					type = "critical";

I'd really suggest having several "hot" trip points at a temp less than
125°C. (And 125°C for critical looks way too critical for me).

> +				};
> +			};
> +		};
> +

-- 
With best wishes
Dmitry