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authorClaudiu Beznea <claudiu.beznea@microchip.com>2023-02-28 13:01:44 +0200
committerMark Brown <broonie@kernel.org>2023-02-28 13:58:49 +0000
commit143a2f011c4471511887807822d3fd71f25f5169 (patch)
tree80ce9d35e40f009c6c4e180849b2e65d39a4caa7 /Documentation
parent54fc4b72b630e1cb92a21140084c6852babbb234 (diff)
downloadlwn-143a2f011c4471511887807822d3fd71f25f5169.tar.gz
lwn-143a2f011c4471511887807822d3fd71f25f5169.zip
ASoC: dt-bindings: sama7g5-pdmc: add microchip,startup-delay-us binding
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> Link: https://lore.kernel.org/r/20230228110145.3770525-3-claudiu.beznea@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/sound/microchip,sama7g5-pdmc.yaml6
1 files changed, 6 insertions, 0 deletions
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