Re: [PATCH v1 0/8] Add RemoteProc cooling support
From: Gaurav Kohli
Date: Tue Jan 13 2026 - 04:33:34 EST
On 1/10/2026 9:43 PM, Casey Connolly wrote:
Hi Casey,
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@xxxxxxxxxx/
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@xxxxxxxxxxx/
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,
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