On Wed, Mar 28, 2018 at 12:22:37AM +0200, Sebastian Reichel wrote:
On Tue, Mar 27, 2018 at 08:14:41PM +0800, Mark Brown wrote:
No, this is exactly the sort of use case with multiple DAIs that the graph card is intended to enable over the old simple-card.
+----------+ +-------------+ | OMAP4 | | CPCAP | | | | | | [McBSP2] | <-----> | [HiFi DAI] | | | | | | [McBSP3] | <--+--> | [Voice DAI] | | | | | | +----------+ | +-------------+ | +----------+ | +-------------+ | MDM6600 | | | WL1285 | | | | | | | [DAI] | <--+--> | [DAI] | | | | | +----------+ +-------------+
Legend: OMAP4 = SoC running Linux CPCAP = Audio codec MDM6600 = Baseband WL1285 = Bluetooth
Re-reading the audio-graph-card binding document I still don't see how the network (OMAP.McBSP3, CPCAP.Voice, MDM6600, WL1285) is supposed to look like. It seems to expect point-to-point DAI connections.
Ugh, a TDM mux? That's really unusual and not particularly supported yet, you'd need to extend the graph card to do it. It's where things should end up for a generic card though.