Re: [PATCH v2 2/2] thermal/drivers/mediatek/lvts_thermal: Make reset optional for MT8196

[Chen-Yu Tsai]

On Tue, Jul 21, 2026 at 6:52 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
>
> Depending on the SoC+Firmware combination, the LVTS hardware may be
> may be actively used by one or even multiple concurrent MCUs!
> In this case, resetting it may produce either a severe slowdown of
> the entire system, or even a thermal protection AP reset, as some
> MCU(s) may be reading a very high or very low temperature while the
> LVTS is being reset.
>
> On those, don't fail if no reset is found as that may be omitted on
> purpose, but still check if there's one, because some board(s) may
> be running on a different bootchain with reduced firmwares or using
> firmwares with reduced functionality.
>
> So, use devm_reset_control_get_optional_exclusive() instead, as the
> LVTS controller always had only one reset and retrieving that by
> index, specifically, always made little sense anyway.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>