Customer has an issue with the output power from a TLV320AIC3106. He is using iPhone headphones to plug into a board they developed, and also on a DM8168 EVM.
The only thing they have attempted to change is the volume, but they didn't specify which register they wrote to to increase the volume.
Questions:
Are the default volume settings set to maximum or some nominal value?
If they are set to nominal, what registers should be modified to increase the output?