Re: [PATCH v3 2/6] ALSA: hda/tegra: Reset hardware

[Dmitry Osipenko]

25.01.2021 18:18, Takashi Iwai пишет:
> On Wed, 20 Jan 2021 01:31:50 +0100,
> Dmitry Osipenko wrote:
>>
>> Reset hardware on RPM-resume in order to bring it into a predictable
>> state.
>>
>> Tested-by: Peter Geis <pgwipeout@xxxxxxxxx> # Ouya T30 audio works
>> Tested-by: Matt Merhar <mattmerhar@xxxxxxxxxxxxxx> # Ouya T30 boot-tested
>> Tested-by: Nicolas Chauvet <kwizart@xxxxxxxxx> # TK1 boot-tested
>> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> 
> Currently we have neither dependency nor reverse-selection of
> CONFIG_RESET_CONTROLLER.  It wouldn't be a problem for builds, but
> you'll get a runtime error from
> devm_reset_control_array_get_exclusive() always when
> CONFIG_RESET_CONTROLLER=n.
> 
> I guess it must be a corner case, but just to be sure.

The CONFIG_RESET_CONTROLLER=y at least for ARM32 Tegra builds.

https://elixir.bootlin.com/linux/v5.11-rc5/source/arch/arm/mach-tegra/Kconfig#L15

Not sure about ARM64.