-.\" $OpenBSD: intro.4,v 1.3 2016/10/07 21:05:19 jmc Exp $
+.\" $OpenBSD: intro.4,v 1.4 2018/07/10 03:23:11 jsg Exp $
.\"
.\" Copyright (c) 2014 Sylvestre Gallon <syl@openbsd.org>
.\" Copyright (c) 1983, 1986, 1991 Regents of the University of California.
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd $Mdocdate: October 7 2016 $
+.Dd $Mdocdate: July 10 2018 $
.Dt INTRO 4 armv7
.Os
.Sh NAME
Inter IC (I2C) bus
.It Xr omap 4
omap3, omap4, am335x SoCs device bus
+.It Xr pci 4
+introduction to PCI bus support
.It Xr usb 4
introduction to Universal Serial Bus support
.El