[PATCH 1/2] bindings: sound: pcm3168a: Document optional RST gpio

Peter Ujfalusi
2019-11-13T12:46:43Z

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>;
--
Peter

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