linux-kernel - Re: [PATCH v1 0/8] Add RemoteProc cooling support

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Message-ID: <6ae95761-6428-4a01-8c60-54df5e54b71f@oss.qualcomm.com>
Date: Tue, 13 Jan 2026 15:03:24 +0530
From: Gaurav Kohli <gaurav.kohli@....qualcomm.com>
To: Casey Connolly <casey.connolly@...aro.org>, andersson@...nel.org,
        mathieu.poirier@...aro.org, robh@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, rafael@...nel.org, daniel.lezcano@...aro.org,
        rui.zhang@...el.com, lukasz.luba@....com, konradybcio@...nel.org,
        amitk@...nel.org, mani@...nel.org
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v1 0/8] Add RemoteProc cooling support


On 1/10/2026 9:43 PM, Casey Connolly wrote:
>
>
> On 12/23/25 13:32, Gaurav Kohli wrote:
>> This series introduces a generic remote proc cooling framework to 
>> control
>> thermal sensors located on remote subsystem like modem, dsp etc.
>> Communications with these subsystems occurs through various channels, 
>> for example,
>> QMI interface for Qualcomm.
>>   The Framework provides an abstraction layer between thermal 
>> subsytem and vendor
>> specific remote subsystem. Vendor drivers are expected to implement 
>> callback
>> and registration mechanisms with cooling framework to control cooling
>> devices.
>>
>> This patchset also revives earlier discussions of QMI based TMD cooling
>> devices discussion posted on below series by Casey:
>> https://lore.kernel.org/linux-devicetree/20230905-caleb-qmi_cooling-v1-0-5aa39d4164a7@linaro.org/ 
>>
>>
>> That series introduced Qualcomm QMI-based TMD cooling devices which used
>> to mitigate thermal conditions across multiple remote subsystems. These
>> devices operate based on junction temperature sensors (TSENS) associated
>> with thermal zones for each subsystem and registering with remoteproc
>> cooling framework for cooling registration.
>>
>> This patch series has a compilation/runtime dependency on another 
>> series [1].
>>
>> [1] 
>> https://lore.kernel.org/linux-devicetree/20250822042316.1762153-1-quic_gkohli@quicinc.com/
>>
>> Casey Connolly (2):
>>    remoteproc: qcom: probe all child devices
>>    thermal: qcom: add qmi-cooling driver
>
> I'm glad this series is getting revived. It would be good if you could 
> explain what changes you made to my patches somewhere.
>
> I also remember one of my patches adding the DT parts for SDM845, 
> would you be willing to pick that up for the next revision? I'd be 
> happy to provide my Tested-by.
>
> Kind regards,
>
Hi Casey,

With this remoeproc cooling abstraction layer, we have integrated your 
patches for subsystem cooling. As lot of comments came for qmi-cooling 
driver, so need to send v2 with cleanup.

Will do clean up and send series again. Yes for other targets like 
sdm845 we will add once this is concluded.


>>
>> Gaurav Kohli (6):
>>    thermal: Add Remote Proc cooling driver
>>    dt-bindings: thermal: Add qcom,qmi-cooling yaml bindings
>>    arm64: dts: qcom: Enable cdsp qmi tmd devices for lemans
>>    arm64: dts: qcom: Enable cdsp qmi tmd devices for talos
>>    arm64: dts: qcom: Enable cdsp qmi tmd devices for kodiak
>>    arm64: dts: qcom: Enable cdsp qmi tmd devices for monaco
>>
>>   .../bindings/remoteproc/qcom,pas-common.yaml  |   6 +
>>   .../bindings/thermal/qcom,qmi-cooling.yaml    |  99 ++++
>>   MAINTAINERS                                   |   8 +
>>   arch/arm64/boot/dts/qcom/kodiak.dtsi          |  36 ++
>>   arch/arm64/boot/dts/qcom/lemans.dtsi          | 138 ++++-
>>   arch/arm64/boot/dts/qcom/monaco.dtsi          |  92 ++++
>>   arch/arm64/boot/dts/qcom/talos.dtsi           |  23 +
>>   drivers/remoteproc/qcom_q6v5.c                |   4 +
>>   drivers/remoteproc/qcom_q6v5_mss.c            |   8 -
>>   drivers/soc/qcom/Kconfig                      |  13 +
>>   drivers/soc/qcom/Makefile                     |   1 +
>>   drivers/soc/qcom/qmi-cooling.c                | 498 ++++++++++++++++++
>>   drivers/soc/qcom/qmi-cooling.h                | 428 +++++++++++++++
>>   drivers/thermal/Kconfig                       |  11 +
>>   drivers/thermal/Makefile                      |   2 +
>>   drivers/thermal/qcom/qmi-cooling.h            | 428 +++++++++++++++
>>   drivers/thermal/remoteproc_cooling.c          | 154 ++++++
>>   include/linux/remoteproc_cooling.h            |  52 ++
>>   18 files changed, 1981 insertions(+), 20 deletions(-)
>>   create mode 100644 
>> Documentation/devicetree/bindings/thermal/qcom,qmi-cooling.yaml
>>   create mode 100644 drivers/soc/qcom/qmi-cooling.c
>>   create mode 100644 drivers/soc/qcom/qmi-cooling.h
>>   create mode 100644 drivers/thermal/qcom/qmi-cooling.h
>>   create mode 100644 drivers/thermal/remoteproc_cooling.c
>>   create mode 100644 include/linux/remoteproc_cooling.h
>>
>