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 peter.ujfalusi@ti.com --- Documentation/devicetree/bindings/sound/ti,pcm3168a.txt | 7 +++++++ 1 file changed, 7 insertions(+)
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>;