very interesting, thanks for the link - that is not my PR. but if the audioinjector driver works, then it should work for my dev board as well (it’s the same codec, and in fact i was able to get it working on raspberry pi with the audioinjector driver).
i was able to compile and install the driver/overlay from that PR, but upon rebooting, i get the following in dmesg:
audioinjector-stereo sound-ext-card: ASoC: machine hw_params failed: -22
and aplay gives a similar error:
Playing WAVE 'LRMonoPhase4.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
aplay: set_params:1363: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: S16_LE
SUBFORMAT: STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: 48000
PERIOD_TIME: 125000
PERIOD_SIZE: 6000
PERIOD_BYTES: 24000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 24000
BUFFER_BYTES: 96000
TICK_TIME: 0
so i’m not sure this driver works (although i would be so glad if it did!)