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XHCI(4)		       FreeBSD Kernel Interfaces Manual		       XHCI(4)

NAME
     xhci -- USB eXtensible Host Controller driver

SYNOPSIS
     device xhci

DESCRIPTION
     The xhci driver provides support for the USB eXtensible Host Controller
     Interface,	which allows use of USB	1.0, 2.0 and 3.0 devices on the	same
     USB port.

     The XHCI controller supports USB connection speeds	up to 5.0Gbps when us-
     ing a USB 3.0 compliant device.

HARDWARE
     The xhci driver supports XHCI compatible controllers having PCI class 12
     (serial bus), subclass 3 (USB) and	programming interface 48 (XHCI).

SYSCTL VARIABLES
     The following variables are available as both sysctl(8) variables and
     loader(8) tunables:

     hw.usb.xhci.debug
	     Debug output level, where 0 is debugging disabled and larger val-
	     ues increase debug	message	verbosity.  Default is 0.

SEE ALSO
     ehci(4), ohci(4), uhci(4),	usb(4)

HISTORY
     The xhci device driver first appeared in FreeBSD 8.2.

FreeBSD	13.0			April 24, 2018			  FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | SYSCTL VARIABLES | SEE ALSO | HISTORY

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