USB audio on riscv64

Hey list,

Apologies for double posting on alsa-user@lists.sourceforge.net as well. Someone suggested this might be more appropriate for the developer mailing list.

I am doing some development on riscv64 using a SiFive Unmatched development board. It has only one PCI express slot which I intend to use for a VGA, but it has a number of USB ports.

Is anyone aware of any USB audio devices that are known to work, or likely to work, with ALSA on riscv64?

I would have thought any device using the generic USB audio module would have worked. But when I went to plug in a small USB speaker, I see it show up on the bus and yet `aplay -l` shows no devices.

Yours truly,