This property specifies power up to audio out time. It's necessary beacause this device has to wait some time before ready to output audio after MCLK, BCLK and MUTE=1 are enabled. For more details about the timing constraints, please refer to WTN0302 on https://www.cirrus.com/products/wm8524/ Signed-off-by: Chancel Liu <chancel.liu@xxxxxxx> --- .../devicetree/bindings/sound/wlf,wm8524.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/wlf,wm8524.yaml b/Documentation/devicetree/bindings/sound/wlf,wm8524.yaml index 09c54cc7de95..54b4da5470e4 100644 --- a/Documentation/devicetree/bindings/sound/wlf,wm8524.yaml +++ b/Documentation/devicetree/bindings/sound/wlf,wm8524.yaml @@ -21,6 +21,15 @@ properties: description: a GPIO spec for the MUTE pin. + wlf,power-up-delay-ms: + maximum: 1500 + default: 100 + description: + Power up sequency delay time in millisecond. It specifies power up to + audio out time. For more details about the timing constraints of this + device, please refer to WTN0302 on + https://www.cirrus.com/products/wm8524/. + required: - compatible - wlf,mute-gpios @@ -34,4 +43,5 @@ examples: wm8524: codec { compatible = "wlf,wm8524"; wlf,mute-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>; + wlf,power-up-delay-ms = <300>; }; -- 2.25.1
