From: Chanwoo Choi <cw00.choi@samsung.com>
To: Dmitry Osipenko <digetx@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Rob Herring <robh+dt@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Peter Geis <pgwipeout@gmail.com>,
Matt Merhar <mattmerhar@protonmail.com>
Cc: linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v1 1/7] PM / devfreq: tegra30: Support thermal cooling
Date: Thu, 20 May 2021 11:50:50 +0900 [thread overview]
Message-ID: <65cdeb50-7ec1-4ed4-1eeb-342c4c915aa1@samsung.com> (raw)
In-Reply-To: <20210510211008.30300-2-digetx@gmail.com>
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@gmail.com>
> ---
> 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
next prev parent reply other threads:[~2021-05-20 2:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-10 21:10 [PATCH v1 0/7] Add thermal cooling support to NVIDIA Tegra devfreq Dmitry Osipenko
2021-05-10 21:10 ` [PATCH v1 1/7] PM / devfreq: tegra30: Support thermal cooling Dmitry Osipenko
2021-05-20 2:50 ` Chanwoo Choi [this message]
2021-05-10 21:10 ` [PATCH v1 2/7] ARM: tegra_defconfig: Enable CONFIG_DEVFREQ_THERMAL Dmitry Osipenko
2021-05-10 21:10 ` [PATCH v1 3/7] dt-bindings: devfreq: tegra30-actmon: Convert to schema Dmitry Osipenko
2021-05-17 21:34 ` Rob Herring
2021-05-20 2:50 ` Chanwoo Choi
2021-05-31 9:36 ` Thierry Reding
2021-05-31 19:21 ` Dmitry Osipenko
2021-05-10 21:10 ` [PATCH v1 4/7] dt-bindings: devfreq: tegra30-actmon: Add cooling-cells Dmitry Osipenko
2021-05-17 21:34 ` Rob Herring
2021-05-20 2:49 ` Chanwoo Choi
2021-05-31 9:37 ` Thierry Reding
2021-05-10 21:10 ` [PATCH v1 5/7] ARM: tegra: Add cooling cells to ACTMON device-tree node Dmitry Osipenko
2021-05-10 21:10 ` [PATCH v1 6/7] ARM: tegra: nexus7: Enable memory frequency thermal throttling using ACTMON Dmitry Osipenko
2021-05-10 21:10 ` [PATCH v1 7/7] ARM: tegra: ouya: " Dmitry Osipenko
2021-05-31 9:41 ` (subset) [PATCH v1 0/7] Add thermal cooling support to NVIDIA Tegra devfreq Thierry Reding
2021-05-31 9:43 ` Thierry Reding
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