Hello!
The best way is to use the kernel tracing as follows …
$ echo 0 | sudo tee /sys/kernel/debug/tracing/trace
$ echo 0 | sudo tee /sys/kernel/debug/tracing/events/enable
$ echo 1 | sudo tee /sys/kernel/debug/tracing/tracing_on
$ echo 1 | sudo tee /sys/kernel/debug/tracing/events/asoc/snd_soc_dapm_widget_power/enable
$ aplay <args>
$ sudo cat /sys/kernel/debug/tracing/trace
If the trace is empty or incomplete then this shows that something is not right. You should see something like thishttps://forums.developer.nvidia.com/t/configuring-a-pcm1863-codec-on-tx2/149561/7?u=jonathanh but obviously this is a different codec.
Regards,
Jon