From 143a2f011c4471511887807822d3fd71f25f5169 Mon Sep 17 00:00:00 2001
From: Claudiu Beznea <claudiu.beznea@microchip.com>
Date: Tue, 28 Feb 2023 13:01:44 +0200
Subject: [PATCH] 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>
---
.../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 c4cf1e5ab84b0..9b40268537cb2 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
--
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