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ASoC: audio-graph-card: update bindings for amplifier support 

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>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shawn Guo 2017-06-29 21:26:37 +08:00 committed by Mark Brown
parent f1f940490d
commit a0c683d734
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/sound/audio-graph-card.txt
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@ -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 {