linux-kernel - Re: [PATCH v2 5/8] arm64: dts: qcom: lemans: Enable CDSP cooling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <o3gdovqbkmclpmrhjtg3lknhqcecwfrp73bpbv6nsspzvkjfm7@qqkrzte3cdy5>
Date: Thu, 29 Jan 2026 02:43:27 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Gaurav Kohli <gaurav.kohli@....qualcomm.com>
Cc: andersson@...nel.org, mathieu.poirier@...aro.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, rui.zhang@...el.com,
        lukasz.luba@....com, konradybcio@...nel.org, mani@...nel.org,
        casey.connolly@...aro.org, amit.kucheria@....qualcomm.com,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        manaf.pallikunhi@....qualcomm.com
Subject: Re: [PATCH v2 5/8] arm64: dts: qcom: lemans: Enable CDSP cooling

On Tue, Jan 27, 2026 at 09:27:19PM +0530, Gaurav Kohli wrote:
> Unlike the CPU, the CDSP does not throttle its speed automatically
> when it reaches high temperatures in Lemans.
> 
> Set up CDSP cooling by throttling the cdsp when it reaches 105°C.
> 
> Signed-off-by: Gaurav Kohli <gaurav.kohli@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/lemans.dtsi | 138 ++++++++++++++++++++++++---
>  1 file changed, 126 insertions(+), 12 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi
> index 808827b83553..c747dd534caa 100644
> --- a/arch/arm64/boot/dts/qcom/lemans.dtsi
> +++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
> @@ -7281,6 +7281,15 @@ compute-cb@11 {
>  					};
>  				};
>  			};
> +
> +			cooling {
> +				compatible = "qcom,qmi-cooling-cdsp";
> +
> +				cdsp_tmd0: cdsp-tmd0 {

This question was already raised. Are there more than one cooling device
for the DSP? If not, drop the subnodes.

> +					label = "cdsp_sw";
> +					#cooling-cells = <2>;
> +				};
> +			};
>  		};
>  
>  		nspb_noc: interconnect@...c0000 {

-- 
With best wishes
Dmitry