vcaudio(4) - NetBSD Manual Pages

VCAUDIO(4)              NetBSD Kernel Interfaces Manual             VCAUDIO(4)


NAME

     vcaudio -- Broadcom VideoCore integrated audio device driver


SYNOPSIS

     vcaudio* at vchiq?


DESCRIPTION

     The vcaudio driver provides support for the VideoCore 4 audio interface
     found on Broadcom SoCs used in boards such as the Raspberry Pi.

     Three outputs are supported: auto, headphones, and hdmi.  The selected
     output can be changed using the outputs.select mixerctl(1) variable.
     headphones corresponds to the analog 3.5mm jack on the Raspberry Pi.

     The hardware does not support recording.


SEE ALSO

     mixerctl(1), audio(4), mixer(4), vchiq(4)


HISTORY

     The vcaudio device driver appeared in NetBSD 7.0.


BUGS

     The playback block size is fixed at 40ms of audio.  The hardware output
     format is fixed at stereo 48kHz 16-bit LPCM so is not configurable with
     audiocfg(1).

NetBSD 10.99                   February 26, 2021                  NetBSD 10.99