[1/2] ASoC: audio-graph-card: update bindings for amplifier support

Message ID 1498742798-3128-2-git-send-email-shawnguo@kernel.org
State New
Headers show
  • ASoC: audio-graph-card: support external amplifier with DAPM widget
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Commit Message

Shawn Guo June 29, 2017, 1:26 p.m.
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(+)


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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 {