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

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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>

authored by

Stephan Gerhold and committed by

Mark Brown 5 years ago cdd3b8da 68353028

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3 changed files

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Documentation

devicetree

bindings

sound

qcom,apq8016-sbc.txt

qcom,apq8096.txt

qcom,sdm845.txt

Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt

··· 34 34 * DMIC 35 35 * Ext Spk 36 36 37 + Optional properties: 38 + 39 + - aux-devs : A list of phandles for auxiliary devices (e.g. analog 40 + amplifiers) that do not appear directly within the DAI 41 + links. Should be connected to another audio component 42 + using "qcom,audio-routing". 43 + 37 44 Dai-link subnode properties and subnodes: 38 45 39 46 Required dai-link subnodes:

Documentation/devicetree/bindings/sound/qcom,apq8096.txt

··· 55 55 Value type: <stringlist> 56 56 Definition: The user-visible name of this sound card. 57 57 58 + - aux-devs 59 + Usage: optional 60 + Value type: <array of phandles> 61 + Definition: A list of phandles for auxiliary devices (e.g. analog 62 + amplifiers) that do not appear directly within the DAI 63 + links. Should be connected to another audio component 64 + using "audio-routing". 65 + 58 66 = dailinks 59 67 Each subnode of sndcard represents either a dailink, and subnodes of each 60 68 dailinks would be cpu/codec/platform dais.

Documentation/devicetree/bindings/sound/qcom,sdm845.txt

··· 24 24 Value type: <stringlist> 25 25 Definition: The user-visible name of this sound card. 26 26 27 + - aux-devs 28 + Usage: optional 29 + Value type: <array of phandles> 30 + Definition: A list of phandles for auxiliary devices (e.g. analog 31 + amplifiers) that do not appear directly within the DAI 32 + links. Should be connected to another audio component 33 + using "audio-routing". 34 + 27 35 = dailinks 28 36 Each subnode of sndcard represents either a dailink, and subnodes of each 29 37 dailinks would be cpu/codec/platform dais.