[PATCH] ASoC: nau8821: Add DMIC selections.

[SevenLee]

On 1/4/2022 10:29 PM, Mark Brown wrote:
> On Tue, Jan 04, 2022 at 11:05:59AM +0800, SevenLee wrote:
>>   On 2021/12/29 08:45 PM, Mark Brown wrote:
>>> The clock speed seems sensible enough to control from userspace since
>>> it's going to be a power/performance tradeoff but why also expose the
>>> slew rate to userspace - that seems more like something that would come
>>> from the board design?
>> Because customers need to adjust different DMIC materials by themselves.
>> Adjust which slope is the most suitable according to the conditions of
>> use, and
>> improve electromagnetic interference by setting the slew rate so that
>> customers
>> can try the best solution.
> Sure, but do they need to do this at runtime?  That sounds like tuning
> that you do once during system design and never touch again so better
> done as a DT property.

They are not to do at run-time. You are right, I will send the new patch
for clock
selection again, and then send the second patch with the slew rate for
the DT
property.

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