From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: "Nícolas F. R. A. Prado" <nfraprado@collabora.com>,
"Daniel Lezcano" <daniel.lezcano@linaro.org>
Cc: Alexandre Bailon <abailon@baylibre.com>,
Balsam CHIHI <bchihi@baylibre.com>,
Chen-Yu Tsai <wenst@chromium.org>,
Alexandre Mergnat <amergnat@baylibre.com>,
kernel@collabora.com, Amit Kucheria <amitk@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Zhang Rui <rui.zhang@intel.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
linux-pm@vger.kernel.org
Subject: Re: [PATCH v3 5/6] thermal/drivers/mediatek/lvts_thermal: Don't leave threshold zeroed
Date: Fri, 7 Jul 2023 10:22:04 +0200 [thread overview]
Message-ID: <7d7db84b-e6be-2d45-fbc6-e891718b757a@collabora.com> (raw)
In-Reply-To: <20230706153823.201943-6-nfraprado@collabora.com>
Il 06/07/23 17:37, Nícolas F. R. A. Prado ha scritto:
> The thermal framework might leave the low threshold unset if there
> aren't any lower trip points. This leaves the register zeroed, which
> translates to a very high temperature for the low threshold. The
> interrupt for this threshold is then immediately triggered, and the
> state machine gets stuck, preventing any other temperature monitoring
> interrupts to ever trigger.
>
> (The same happens by not setting the Cold or Hot to Normal thresholds
> when using those)
>
> Set the unused threshold to a valid low value. This value was chosen so
> that for any valid golden temperature read from the efuse, when the
> value is converted to raw and back again to milliCelsius, the result
> doesn't underflow.
>
> Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver")
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
next prev parent reply other threads:[~2023-07-07 8:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-06 15:37 [PATCH v3 0/6] thermal/drivers/mediatek/lvts_thermal: Fixes to the interrupt handling Nícolas F. R. A. Prado
2023-07-06 15:37 ` [PATCH v3 1/6] thermal/drivers/mediatek/lvts_thermal: Handle IRQ on all controllers Nícolas F. R. A. Prado
2023-07-07 13:46 ` Alexandre Mergnat
2023-07-06 15:37 ` [PATCH v3 2/6] thermal/drivers/mediatek/lvts_thermal: Honor sensors in immediate mode Nícolas F. R. A. Prado
2023-07-07 13:50 ` Alexandre Mergnat
2023-07-06 15:37 ` [PATCH v3 3/6] thermal/drivers/mediatek/lvts_thermal: Use offset threshold for IRQ Nícolas F. R. A. Prado
2023-07-07 8:21 ` AngeloGioacchino Del Regno
2023-07-07 13:54 ` Alexandre Mergnat
2023-07-06 15:37 ` [PATCH v3 4/6] thermal/drivers/mediatek/lvts_thermal: Disable undesired interrupts Nícolas F. R. A. Prado
2023-07-07 8:21 ` AngeloGioacchino Del Regno
2023-07-07 13:58 ` Alexandre Mergnat
2023-07-06 15:37 ` [PATCH v3 5/6] thermal/drivers/mediatek/lvts_thermal: Don't leave threshold zeroed Nícolas F. R. A. Prado
2023-07-07 8:22 ` AngeloGioacchino Del Regno [this message]
2023-07-07 14:05 ` Alexandre Mergnat
2023-07-06 15:37 ` [PATCH v3 6/6] thermal/drivers/mediatek/lvts_thermal: Manage threshold between sensors Nícolas F. R. A. Prado
2023-07-07 8:22 ` AngeloGioacchino Del Regno
2023-07-07 14:11 ` Alexandre Mergnat
2023-07-13 9:04 ` [PATCH v3 0/6] thermal/drivers/mediatek/lvts_thermal: Fixes to the interrupt handling Daniel Lezcano
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