Re: [PATCH 1/3] ALSA: hda/tegra: Skip reset on BPMP devices

Dmitry Osipenko
2021-12-08T12:06:00Z

08.12.2021 08:22, Sameer Pujar пишет:
>
>
> On 12/7/2021 11:32 PM, Dmitry Osipenko wrote
>> If display is already active, then shared power domain is already
>> ungated.
>
> If display is already active, then shared power domain is already
> ungated. HDA reset is already applied during this ungate. In other
> words, HDA would be reset as well when display ungates power-domain.

Now, if you'll reload the HDA driver module while display is active,
you'll get a different reset behaviour. HDA hardware will be reset on
pre-T186, on T186+ it won't be reset.

Please make v2 using devm_reset_control_bulk_get_exclusive(), skipping
the non-existent reset, or move the workaround to the BPMP driver like I
suggested in the other reply.