a issue about audio on TX2

I am now connecting I2S0 of TX2 with a oscilloscope to run audip file of aplay -D hw:0,1 test.wav, but there is no waveform output on the oscilloscope, even CLK line has no waveform, I don’t know how it is caused.
I’m checking: 1. Alsamixer configuration 2. Device tree on sound part 3. Drive rt565x drive source code.
Could you please give me any suggestions?


If you …

cat /proc/asound/cards

You will probably find that sound card 0 is the HDA sound-card. For I2S you need sound-card 1 or ‘tegrasndt186ref’. Can you try …

aplay -D hw:tegrasndt186ref,0 <wavfile>