Re: [PATCH 2/3] ASoC: dt-bindings: sama7g5-pdmc: add microchip,startup-delay-us binding

[Mark Brown]

On Thu, Feb 16, 2023 at 11:18:16AM +0100, Krzysztof Kozlowski wrote:
> On 16/02/2023 11:15, Claudiu.Beznea@xxxxxxxxxxxxx wrote:

> >>> +  microchip,startup-delay-us:
> >>> +    description: |
> >>> +      Specifies the delay in microseconds that needs to be applied after
> >>> +      enabling the PDMC microphones to avoid unwanted noise due to microphones
> >>> +      not being ready.

> >> Is this some hardware delay? Or OS? If OS, why Linux specific delay is
> >> put into DT?

> > It's the delay used in software workaround that IP needs to filter noises.

> Then this sounds like OS? Linux related properties usually do not belong
> to DT.

This is a hardware property, it's the time needed for the input
to settle.

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