PDMC can work with different types of microphones, thus different boards could have different microphones. Depending on microphone type the PDMC would need to wait longer or shorter period (at startup) than the default chosen one to filter unwanted noise. Thus add microchip,startup-delay-us binding to let PDMC users to specify startup delay.
Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org --- .../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. + required: - compatible - reg