Hi John
Above patch is using normal simple-card style for HDMI sound, but as Laurent said we want to use same DT style for HDMI video and sound (= OF graph style). Fortunately, I posted patch-set for OF graph support on sound card yesterday. Can you check this ? http://www.spinics.net/lists/devicetree/msg146131.html The points are
- sound can use OF graph style DT
- sound-card DT is no longer needed
- it needs type = "sound" property
patch-set [0/23] is this http://www.spinics.net/lists/devicetree/msg146113.html
Thanks for the pointers! If I understand this correctly, the OF graph simple-card method would replace my current simple-card dts usage for hikey? Other then just having another out-of-tree patchset to track, I don't have any objection to trying to use the OF graph simple-card method in the hikey dts (though I suspect I'll have to pester you for help when I give it a shot).
I posted v2 patchset OF graph simple-card which doesn't have "type" property. Anyway, if you use OF graph simple-card, your "CPU" side driver need to call asoc_simple_card_try_to_probe_graph_card() to probing it.
And this is not 100% mandatory, but your CPU and/or Codec driver want to adjust OF graph style for parsing. The position is like this
simple-card :: dai-link <-> OF graph simple-card :: port/endpoint