Questions of I2S route setting by using ALSA

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi ~

I am using TX2 dev board kit with R28.1 SDK. Now I connect an amp to J21.
When I play 48khz audio wav, AUDIO_I2S_SRCLK output is 1.536Mhz and AUDIO_I2S_SFSYNC output is 48khz.
But AUDIO_I2S_SOUT, there is no signals.

I think pinmux and clock output are correct. Maybe the I2S routing setting is not set correctly.
Is there any one know how to set the I2S routing by ALSA or which (device tree?) I should modify, too?

Thank you!

2

After using this command “aplay -Dhw:1,0…”, now there is signal to output.