On Mon, Apr 18, 2016 at 06:20:00PM +0800, Xing Zheng wrote:
On 2016年04月18日 18:03, Xing Zheng wrote:
sound { ...... simple-audio-card,dai-link@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.