On Mon, Apr 18, 2016 at 06:20:00PM +0800, Xing Zheng wrote:
> On 2016?04?18? 18:03, Xing Zheng wrote:
> sound {
> ......
> simple-audio-card,dai-link at 0 {
> format = "i2s";
> cpu {
> sound-dai = <&i2s0>;
> };
>
> codec {
> sound-dai = <&codec>;
>
> simple-audio-card,codec-jack =
> "JACK_HEADSET",
> "JACK_BTN_0",
> "JACK_BTN_1",
> "JACK_BTN_2",
> "JACK_BTN_3";
> };
> };
This seems like it's only half the job and worryingly close to Linux
internals. In particular the fact that the binding is specific to
simple-card and the fact that it's being placed on the CODEC (rather
than a separate object that the CODEC references) so that we can't
combine multiple devices are both a concern.
Dylan Reid did have an earlier go at defining a binding for this:
http://thread.gmane.org/gmane.linux.alsa.devel/138906
which went through a couple more iterations but the work on that seemed
to die off a bit.
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