Re: [PATCH v6 11/11] drm/mediatek: dp: Don't register HPD interrupt handler for eDP case

[Alexandre Mergnat]

Reviewed-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>

On 17/07/2023 16:14, AngeloGioacchino Del Regno wrote:
> The interrupt handler for HPD is useful only if a display is actually
> supposed to be hotpluggable, as that manages the machinery to perform
> cable (un)plug detection, debouncing and setup for re-training.
>
> Since eDP panels are not supposed to be hotpluggable we can avoid
> using the HPD interrupts altogether and rely on HPD polling only
> for the suspend/resume case, saving us some spinlocking action and
> the overhead of interrupts firing at every suspend/resume cycle,
> achieving a faster (even if just slightly) display resume.

--
Regards,
Alexandre