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

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@microchip.com

.../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