I am trying to get Line Level audio output from audio cape. I have connected RIGHT_ROP, RIGHT_ROM, LEFT_LOP, and LEFT_LOM to a stereo amplifier and connected the amplifier to the speaker.
When I send the command to play audio using
I just get noise on the speaker.
I am able to get audio on headphones, so I am sure device tree was loaded correctly and cape works fine.
How do I get audio on line out? Do I need to route audio to RIGHT_ROP, RIGHT_ROM, LEFT_LOP, and LEFT_LOM in the audio device tree overlay? If so how do I do that?