PINE A64 AUDIO DAC POT BOARD On A64 LTS w/ Armbian FOCAL

[A64mediaplayer]

Hi Folks!

Setup an A64 LTS board with Armbian focal and trying to get the Pine DAC POT running.  Any insight into the method to make this work? 
Is it via dt-overlay like in raspian ... or something else?  I am assuming this is possible since the Volumio image claims to work ...

Thanks!