On 14/02/2023 17:14, Claudiu Beznea wrote: > Add microchip,startup-delay-us binding to let PDMC users to specify > startup delay. > > Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx> > --- > .../devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml b/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > index c4cf1e5ab84b..9b40268537cb 100644 > --- a/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > +++ b/Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml > @@ -67,6 +67,12 @@ properties: > maxItems: 4 > uniqueItems: true > > + 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? Best regards, Krzysztof
