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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2019-11-13 15:47:33 +0300
committerMark Brown <broonie@kernel.org>2019-11-18 16:09:13 +0300
commitcdacc761dae1cbd6475ac79f0e732f2b1ca021e0 (patch)
treea8ffccb765de310bb16e00bbfc50a84d410f8d8b /Documentation/devicetree/bindings/sound/ti,pcm3168a.txt
parentb1176bbb70866f24099cd2720283c7219fb4a81c (diff)
downloadlinux-cdacc761dae1cbd6475ac79f0e732f2b1ca021e0.tar.xz
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 <peter.ujfalusi@ti.com> Link: https://lore.kernel.org/r/20191113124734.27984-2-peter.ujfalusi@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/ti,pcm3168a.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/ti,pcm3168a.txt7
1 files changed, 7 insertions, 0 deletions
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>;