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authorDmitry Osipenko <digetx@gmail.com>2021-05-11 00:10:02 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2021-05-21 07:16:10 +0300
commit5e480ab94db8102baa73da33534e708a8636c2f9 (patch)
tree6f4c8e4a7c74fbceff07dd456be4b91b7f25d7b6 /drivers/devfreq
parent7dbc0d246891acbb8ae5840b3237881b7a0787df (diff)
downloadlinux-5e480ab94db8102baa73da33534e708a8636c2f9.tar.xz
PM / devfreq: tegra30: Support thermal cooling
Expose ACTMON devfreq device as a cooling device in order to throttle memory freq on overheat. Throttling of memory freq has a significant cooling effect on NVIDIA Tegra SoCs since higher memory freqs require higher SoC core voltage which is one of the main causes of the heating. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/tegra30-devfreq.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index ce83f883ca65..10661eb2aed8 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -688,6 +688,7 @@ static struct devfreq_dev_profile tegra_devfreq_profile = {
.polling_ms = ACTMON_SAMPLING_PERIOD,
.target = tegra_devfreq_target,
.get_dev_status = tegra_devfreq_get_dev_status,
+ .is_cooling_device = true,
};
static int tegra_governor_get_target(struct devfreq *devfreq,