[PATCH RESEND v2 2/5] thermal/drivers/mediatek/lvts: Disable Stage 3 thermal threshold

[Daniel Lezcano]

On 13/01/2025 14:27, Nícolas F. R. A. Prado wrote:
> The Stage 3 thermal threshold is currently configured during
> the controller initialization to 105 Celsius. From the kernel
> perspective, this configuration is harmful because:
> * The stage 3 interrupt that gets triggered when the threshold is
>    crossed is not handled in any way by the IRQ handler, it just gets
>    cleared. Besides, the temperature used for stage 3 comes from the
>    sensors, and the critical thermal trip points described in the
>    Devicetree will already cause a shutdown when crossed (at a lower
>    temperature, of 100 Celsius, for all SoCs currently using this
>    driver).
> * The only effect of crossing the stage 3 threshold that has been
>    observed is that it causes the machine to no longer be able to enter
>    suspend. Even if that was a result of a momentary glitch in the
>    temperature reading of a sensor (as has been observed on the
>    MT8192-based Chromebooks).
> 
> For those reasons, disable the Stage 3 thermal threshold configuration.

Does this stage 3 not designed to reset the system ? So the interrupt 
line should be attached to the reset line ? (just asking)

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