(Disclaimer: I’m actually not using an actual Dragonboard 820C but a SOM devkit with the same hardware. I hope you can still help me out)
My devkit has audio expansion headers that expose the same WCD9335 pins as the DB820C. I noticed that in the stock configuration (running Android 8 from CodeAurora), there’s only a single channel of differential line-out enabled. How can I change the configuration (through Slimbus, I2C isn’t hooked up) to have two differential line outs configured as a stereo source? I want to test an analog stereo amp on those ports. Alternatively, how do I enable SoundWire output?