Power-cycle a usb port

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

I already asked the question hidden at the end of another message [1]:
can we power-cycle a USB port? My understanding is that we have no way
of doing it from userland, but what about from kernel? Even if the capability
is hardware-dependent, it would be nice to have an ioctl to power off/power
on a USB port.

[1] http://mail-index.netbsd.org/tech-kern/2017/04/07/msg021789.html
-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost