From: Shawn Guo <shawn.guo@xxxxxxxxxx>
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@xxxxxxxxxx>
---
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 {
--
1.9.1
--
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