1.\" $OpenBSD: xhci.4,v 1.4 2021/12/29 18:44:52 patrick Exp $ 2.\" 3.\" Copyright (c) 2014 Martin Pieuchot 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: December 29 2021 $ 18.Dt XHCI 4 19.Os 20.Sh NAME 21.Nm xhci 22.Nd USB eXtensible Host Controller Interface 23.Sh SYNOPSIS 24.Cd "xhci* at acpi?" 25.Cd "xhci* at fdt?" 26.Cd "xhci* at pci?" 27.Cd "usb* at xhci?" 28.Sh DESCRIPTION 29The 30.Nm 31driver provides support for the USB eXtensible Host Controller Interface, 32which provides an interface to 33.Xr usb 4 34devices. 35.Pp 36xHCI controllers support all USB 3.0, 2.0 and 1.x device speeds. 37.Sh SEE ALSO 38.Xr acpi 4 , 39.Xr pci 4 , 40.Xr usb 4 41.Sh HISTORY 42The 43.Nm 44driver 45appeared in 46.Ox 5.6 . 47.Sh AUTHORS 48.An -nosplit 49The 50.Nm 51driver was written by 52.An Martin Pieuchot Aq Mt mpi@openbsd.org . 53