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ASoC: dt-bindings: qcom: Document "aux-devs" property

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In some cases we need to probe additional audio components that do
not appear as part of the DAI links specified in the device tree.
Examples for this are auxiliary devices such as analog amplifiers
or codecs.

To make them work they need to be added as part of "aux-devs"
and connected to some other audio component using the audio routes
configurable using "(qcom,)audio-routing".

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200826095141.94017-2-stephan@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>
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Stephan Gerhold 2020-08-26 11:51:40 +02:00 committed by Mark Brown
parent 6835302853
commit cdd3b8daf2
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7
Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt
View file

@ -34,6 +34,13 @@ Required properties:
* DMIC
* Ext Spk
Optional properties:
- aux-devs : A list of phandles for auxiliary devices (e.g. analog
amplifiers) that do not appear directly within the DAI
links. Should be connected to another audio component
using "qcom,audio-routing".
Dai-link subnode properties and subnodes:
Required dai-link subnodes:

8
Documentation/devicetree/bindings/sound/qcom,apq8096.txt
View file

@ -55,6 +55,14 @@ This binding describes the APQ8096 sound card, which uses qdsp for audio.
Value type: <stringlist>
Definition: The user-visible name of this sound card.
- aux-devs
Usage: optional
Value type: <array of phandles>
Definition: A list of phandles for auxiliary devices (e.g. analog
amplifiers) that do not appear directly within the DAI
links. Should be connected to another audio component
using "audio-routing".
= dailinks
Each subnode of sndcard represents either a dailink, and subnodes of each
dailinks would be cpu/codec/platform dais.

8
Documentation/devicetree/bindings/sound/qcom,sdm845.txt
View file

@ -24,6 +24,14 @@ This binding describes the SDM845 sound card, which uses qdsp for audio.
Value type: <stringlist>
Definition: The user-visible name of this sound card.
- aux-devs
Usage: optional
Value type: <array of phandles>
Definition: A list of phandles for auxiliary devices (e.g. analog
amplifiers) that do not appear directly within the DAI
links. Should be connected to another audio component
using "audio-routing".
= dailinks
Each subnode of sndcard represents either a dailink, and subnodes of each
dailinks would be cpu/codec/platform dais.