On Tue, Aug 25, 2020 at 03:52:53PM -0600, Rob Herring wrote: > On Wed, Aug 19, 2020 at 11:15:32AM +0200, Stephan Gerhold wrote: > > 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@xxxxxxxxxx> > > Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx> > > --- > > .../devicetree/bindings/sound/qcom,apq8016-sbc.txt | 7 +++++++ > > Documentation/devicetree/bindings/sound/qcom,apq8096.txt | 8 ++++++++ > > Documentation/devicetree/bindings/sound/qcom,sdm845.txt | 8 ++++++++ > > 3 files changed, 23 insertions(+) > > > > 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..248df5056fec 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: <phandles with arguments> > > How do you know how many arguments? It either has to be fixed or needs a > #.*cells in the phandles. For the latter, you'd need to come up with a > common binding. > Actually the phandle should not have any arguments, seems like I just copied this from some other entry. Will fix this, thank you! Stephan
