The audio contributors and maintainers have organized a workshop roughly once every year for a number of years now, these have been really useful both for face to face design discussions and for making sure that the perspectives of people working on userspaces (especially Android and ChromeOS where development is more inward focused) get included.
Potential topics include:
Low latency audio
Inter-device dependenices (general kernel topic)
mmap/no IRQ mode
Time stamping
USB audio power and latency performance
Move of clocking into the clock
API
Propagating digital configuration through the DAPM graph
HDA/ASoC integration
Userspace and configuration integration (how will topology etc get integrated in OSes)
UCM scaling, does it scale well…?
Standardizing HDMI / DP interface
Media Controller
API integration
How to improve upstreaming vendor drivers?
Stable / LTS kernel maintenance
SoundWire support
Para Virtualized audio driver support
Tracepoints for PCM parameter support
Userspace drivers (for IEEE 1394 and other things)
Dropping the DICE driver
Pierre-Louis Bossart
Mark Brown
Lars-Peter Clausen
Liam Girdwood
Takashi Iwai
Vinod Koul
Eric Laurent
Mengdong Lin
Dylan Reid
Arun Raghavan