Add reset-gpio property, which is an optional option

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- Changes in RESEND v3 - send updated binding document only

Changes in v3 - update binding document.

Changes in v2 - use devm_gpiod_get_optional instead of of_get_named_gpio

Documentation/devicetree/bindings/sound/cs42xx8.txt | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/cs42xx8.txt b/Documentation/devicetree/bindings/sound/cs42xx8.txt index 8619a156d038..ab8f54095269 100644 --- a/Documentation/devicetree/bindings/sound/cs42xx8.txt +++ b/Documentation/devicetree/bindings/sound/cs42xx8.txt @@ -14,6 +14,11 @@ Required properties: - VA-supply, VD-supply, VLS-supply, VLC-supply: power supplies for the device, as covered in Documentation/devicetree/bindings/regulator/regulator.txt

+Optional properties: + + - reset-gpio : a GPIO spec to define which pin is connected to the chip's + !RESET pin + Example:

cs42888: codec@48 { @@ -25,4 +30,5 @@ cs42888: codec@48 { VD-supply = <&reg_audio>; VLS-supply = <&reg_audio>; VLC-supply = <&reg_audio>; + reset-gpio = <&pca9557_b 1 1>; };