From: Shawn Guo shawn.guo@linaro.org
The audio-graph-card should be able to support widgets and routing in the same way as what simple-audio-card does. The patch adds the properties into audio-graph-card bindings. Then an optional property 'pa-gpios' for controlling external amplifier, which depends on DAPM widgets and routing, is added.
Signed-off-by: Shawn Guo shawn.guo@linaro.org --- Documentation/devicetree/bindings/sound/audio-graph-card.txt | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.txt b/Documentation/devicetree/bindings/sound/audio-graph-card.txt index bac4b1b1060f..6e6720aa33f1 100644 --- a/Documentation/devicetree/bindings/sound/audio-graph-card.txt +++ b/Documentation/devicetree/bindings/sound/audio-graph-card.txt @@ -10,6 +10,8 @@ see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt Below are same as Simple-Card.
- label +- widgets +- routing - dai-format - frame-master - bitclock-master @@ -24,6 +26,9 @@ Required properties: - compatible : "audio-graph-card"; - dais : list of CPU DAI port{s}
+Optional properties: +- pa-gpios: GPIO used to control external amplifier. + Example: Single DAI case
sound_card {