.\"	$NetBSD: gcscpcib.4,v 1.9 2017/02/17 22:24:46 christos Exp $
.\"     $OpenBSD: glxpcib.4,v 1.7 2007/11/17 11:38:50 mbalmer Exp $
.\"
.\" Michael Shalayeff, 2007. Public Domain.
.\"
.Dd February 17, 2017
.Dt GCSCPCIB 4
.Os
.Sh NAME
.Nm gcscpcib
.Nd "AMD CS553[56] PCI-ISA bridge with timecounter, watchdog timer, and GPIO"
.Sh SYNOPSIS
.Cd "gcscpcib* at pci? dev ? function ?"
.Cd "gpio* 	at gcscpcib?"
.Cd "isa* 	at gcscpcib?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the AMD Geode CS5535 and CS5536 Companion chip.
This device contains a number of components, including a PCI-ISA bridge.
Besides the core functionality, the
.Nm
driver implements a 32-bit 3.5 MHz timecounter, a watchdog timer device,
and a GPIO device.
The watchdog timer may be configured via the
.Xr wdogctl 8
utility and the GPIO pins can be manipulated via the
.Xr gpioctl 8
utility.
.Sh SEE ALSO
.Xr gpio 4 ,
.Xr i386/intro 4 ,
.Xr isa 4 ,
.Xr pci 4 ,
.Xr pcib 4 ,
.Xr gpioctl 8 ,
.Xr wdogctl 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.3
as
.Nm glxpcib
before being ported to
.Nx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Michael Shalayeff
and
.An Yojiro UO .
The GPIO parts were added by
.An Marc Balmer Aq Mt marc@msys.ch .