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 using 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 values 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.

Debian                                           April 24, 2018                                          XHCI(4)