If your getting an error “failed to find auto mixer: lv10: VolumeControl ::init() failed to find mixer elements” in RetroPie just add the following line in your config.txt.
dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4
If your getting an error “failed to find auto mixer: lv10: VolumeControl ::init() failed to find mixer elements” in RetroPie just add the following line in your config.txt.
dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4