[BRLTTY] Connecting braille display to qemu guest machine

[Vsevolod Popov]

Hi all,
I'd like to connect my braille display to qemu virtual machine because 
for some reason there is no sound in GUI's guest machine.
Do I understand correctly that to do it I have to type the following:
qemu-system-x86_64 \
-device qemu-xhci \
usb-braille,chardev=id-of-braille-display
But where do I find this path to it to attach to qemu?
Thank you!
--
regards,
Vsevolod
https://github.com/sevapopov2/