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PM / devfreq: tegra30: Support thermal cooling

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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>
This commit is contained in:
Dmitry Osipenko 2021-05-11 00:10:02 +03:00 committed by Chanwoo Choi
parent 7dbc0d2468
commit 5e480ab94d
1 changed files with 1 additions and 0 deletions
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drivers/devfreq/tegra30-devfreq.c
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@ -688,6 +688,7 @@ static struct devfreq_dev_profile tegra_devfreq_profile = {
.polling_ms = ACTMON_SAMPLING_PERIOD, .polling_ms = ACTMON_SAMPLING_PERIOD,
.target = tegra_devfreq_target, .target = tegra_devfreq_target,
.get_dev_status = tegra_devfreq_get_dev_status, .get_dev_status = tegra_devfreq_get_dev_status,
.is_cooling_device = true,
}; };
static int tegra_governor_get_target(struct devfreq *devfreq, static int tegra_governor_get_target(struct devfreq *devfreq,