The Mixer can mix audio streams from any of the 10 XBAR-originating input ports to any of the 5 output ports. The DAPM widgets and routes for Mixer are shown in the following diagram. The Mixer driver also exposes Rx Gain and Mixer Enable as additional kcontrols to set the volume of each input stream and to globally enable or disable the Mixer itself.
As described above, there are currently only 5 Mixer output ports in Tegra Asoc, but currently I need 8 Mixer output ports for my application.
Excuse me, Can I extend more Mixer Output ports? and How to finish this work?