Excellent! Thanks Morpheus, Bortis’ ossc_0.78-aud-wextmclk.jic build works just fine. *whew*
That was the nudge in the right direction that I needed. After poking around in the makefile some more I found what I was missing (I had been going by the build instructions on the /marqs85/ossc github page for lack of any other resource).
In case anyone else runs in to this– for the 1.6 boards with the PCM1862 ADC when building your own firmware, use ‘ENABLE_AUDIO=y’ as a command line option to make. (so: “make ENABLE_AUDIO=y mem_init_generate”)