On 5/11/21 6:10 AM, Dmitry Osipenko wrote:
> 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@xxxxxxxxx>
> ---
> drivers/devfreq/tegra30-devfreq.c | 1 +
> 1 file changed, 1 insertion(+)
>
> 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,
>
Applied it. Thanks.
--
Best Regards,
Chanwoo Choi
Samsung Electronics
