On Tue, Mar 01, 2016 at 05:16:30PM +0100, Jean-Francois Moine wrote: > As told many times, the simple card is a pure Linux specific entity. > It does not describe any hardware. It should not appear in a DT, or, The physical integration of audio systems is meaningful hardware that physically exists and matters to software. I am completely fed up of having to go through this, I'm fairly sure I've been through it with you before. > if it does, its compatible should be "linux, simple-audio-card". Documentation/SubmittingPatches. > Then, how can the other OSs know the links between the audio > devices and the audio encoders/connectors? Documentation/devicetree/bindings/sound/simple-card.txt > On the other way, the audio graph does not impose any particular > software design. It just describes the links between the different > hardware components and each OS is free to implement its own layout. So long as there is no effort on actually upstreaming a graph based card that shows realistic signs of getting merged in a useful form it doesn't meaningfully exist. Right now nobody is even trying to do that. If you are concerned about simple-card being too Linux specific then by all means add board specific bindings, preferably ones that can just be added to simple-card as a compatible string.
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