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authorStephan Gerhold <stephan@gerhold.net>2020-08-26 11:51:40 +0200
committerMark Brown <broonie@kernel.org>2020-09-08 15:37:49 +0100
commitcdd3b8daf26e5eb2e97b6a37dfdb83597bcbdc52 (patch)
tree1482f2291888e0d8380da59ca85170d9cc0b9b17 /Documentation
parent6835302853169441069e11bc4642300c22009c2e (diff)
ASoC: dt-bindings: qcom: Document "aux-devs" property
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt7
-rw-r--r--Documentation/devicetree/bindings/sound/qcom,apq8096.txt8
-rw-r--r--Documentation/devicetree/bindings/sound/qcom,sdm845.txt8
3 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt b/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt
index 84b28dbe9f15..23998262a0a7 100644
--- a/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt
+++ b/Documentation/devicetree/bindings/sound/qcom,apq8016-sbc.txt
@@ -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:
diff --git a/Documentation/devicetree/bindings/sound/qcom,apq8096.txt b/Documentation/devicetree/bindings/sound/qcom,apq8096.txt
index c814e867850f..e1b9fa8a5bf8 100644
--- a/Documentation/devicetree/bindings/sound/qcom,apq8096.txt
+++ b/Documentation/devicetree/bindings/sound/qcom,apq8096.txt
@@ -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.
diff --git a/Documentation/devicetree/bindings/sound/qcom,sdm845.txt b/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
index ca8c89e88bfa..de4c604641da 100644
--- a/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
+++ b/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
@@ -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.