ASoC: dt-bindings: nau8821: Add delay control for ADC

Change the original fixed delay to the assignment from the property. It
will make it more flexible to different platforms to avoid pop noise at
the beginning of recording.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240415070649.3496487-2-wtli@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
index 054b53954ac3d812195ce401f74dca69d82e69c5..9f44168efb3ed159cf4175890e67609e784aeddb 100644 (file)
--- a/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
+++ b/Documentation/devicetree/bindings/sound/nuvoton,nau8821.yaml
@@ -103,6 +103,12 @@ properties:
         just limited to the left adc for design demand.
     type: boolean
 
+  nuvoton,adc-delay-ms:
+    description: Delay (in ms) to make input path stable and avoid pop noise.
+    minimum: 125
+    maximum: 500
+    default: 125
+
   '#sound-dai-cells':
     const: 0
 
@@ -136,6 +142,7 @@ examples:
             nuvoton,jack-eject-debounce = <0>;
             nuvoton,dmic-clk-threshold = <3072000>;
             nuvoton,dmic-slew-rate = <0>;
+            nuvoton,adc-delay-ms = <125>;
             #sound-dai-cells = <0>;
         };
     };