75XX USB Host
From embeddedTS Manuals
The Cavium CPU supplies 2 standard USB 2.0 ports. The power to the USB can also be toggled by setting a DIO.
# Source the subroutine file for 'setdiopin'
. /initrd/ts7500.subr
# Power off USB
setdiopin 7 0
# Power on USB
setdiopin 7 1