there may use enable pin to control dmic start and stop, so add this property in dt-bindings.
Signed-off-by: Lin Huang hl@rock-chips.com --- Documentation/devicetree/bindings/sound/dmic.txt | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/dmic.txt b/Documentation/devicetree/bindings/sound/dmic.txt index a0c58f2..54c8ef6 100644 --- a/Documentation/devicetree/bindings/sound/dmic.txt +++ b/Documentation/devicetree/bindings/sound/dmic.txt @@ -5,8 +5,12 @@ This device support generic PDM digital microphone. Required properties: - compatible: should be "dmic-codec".
+Optional properties: + - dmicen-gpios: GPIO specifier for dmic to control start and stop + Example node:
dmic_codec: dmic@0 { compatible = "dmic-codec"; + dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>; };