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authorDaniel Lezcano <daniel.lezcano@linaro.org>2019-12-20 01:53:16 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-01-27 12:24:32 +0300
commita4c428e523490bf53e9c4ba2d809130c58c06ac7 (patch)
treead6044a20c4f6ee88470acbd3a79d981cb221d33 /MAINTAINERS
parent0a1990a2d1f2217db20b30f915f48d9b8b976949 (diff)
downloadlinux-a4c428e523490bf53e9c4ba2d809130c58c06ac7.tar.xz
thermal/drivers/cpu_cooling: Introduce the cpu idle cooling driver
The cpu idle cooling device offers a new method to cool down a CPU by injecting idle cycles at runtime. It has some similarities with the intel power clamp driver but it is actually designed to be more generic and relying on the idle injection powercap framework. The idle injection duration is fixed while the running duration is variable. That allows to have control on the device reactivity for the user experience. An idle state powering down the CPU or the cluster will allow to drop the static leakage, thus restoring the heat capacity of the SoC. It can be set with a trip point between the hot and the critical points, giving the opportunity to prevent a hard reset of the system when the cpufreq cooling fails to cool down the CPU. With more sophisticated boards having a per core sensor, the idle cooling device allows to cool down a single core without throttling the compute capacity of several cpus belonging to the same clock line, so it could be used in collaboration with the cpufreq cooling device. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/20191219225317.17158-2-daniel.lezcano@linaro.org
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diff --git a/MAINTAINERS b/MAINTAINERS
index 56765f542244..fd45bd0ec68e 100644
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+++ b/MAINTAINERS
@@ -16342,12 +16342,15 @@ F: Documentation/devicetree/bindings/thermal/
THERMAL/CPU_COOLING
M: Amit Daniel Kachhap <amit.kachhap@gmail.com>
+M: Daniel Lezcano <daniel.lezcano@linaro.org>
M: Viresh Kumar <viresh.kumar@linaro.org>
M: Javi Merino <javi.merino@kernel.org>
L: linux-pm@vger.kernel.org
S: Supported
F: Documentation/driver-api/thermal/cpu-cooling-api.rst
+F: Documentation/driver-api/thermal/cpu-idle-cooling.rst
F: drivers/thermal/cpu_cooling.c
+F: drivers/thermal/cpuidle_cooling.c
F: include/linux/cpu_cooling.h
THERMAL DRIVER FOR AMLOGIC SOCS