From: Peter Ujfalusi Date: Wed, 13 Nov 2019 12:47:33 +0000 (+0200) Subject: ASoC: pcm3168a: Document optional RST gpio X-Git-Tag: for-linus-20191205~91^2~2^2^2~14 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=cdacc761dae1cbd6475ac79f0e732f2b1ca021e0;p=linux-2.6-block.git ASoC: pcm3168a: Document optional RST gpio On boards where the RST line is not pulled up, but it is connected to a GPIO line this property must present in order to be able to enable the codec. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20191113124734.27984-2-peter.ujfalusi@ti.com Signed-off-by: Mark Brown --- diff --git a/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt b/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt index 5d9cb84c661d..f30aebc7603a 100644 --- a/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt +++ b/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt @@ -25,6 +25,12 @@ Required properties: For required properties on SPI/I2C, consult SPI/I2C device tree documentation +Optional properties: + + - rst-gpios : Optional RST gpio line for the codec + RST = low: device power-down + RST = high: device is enabled + Examples: i2c0: i2c0@0 { @@ -34,6 +40,7 @@ i2c0: i2c0@0 { pcm3168a: audio-codec@44 { compatible = "ti,pcm3168a"; reg = <0x44>; + rst-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>; clocks = <&clk_core CLK_AUDIO>; clock-names = "scki"; VDD1-supply = <&supply3v3>;