GCSCPCIB(4)

GCSCPCIB(4) | Device Drivers Manual | GCSCPCIB(4)

# NAME

`gcscpcib` —
AMD CS553[56] PCI-ISA bridge with timecounter, watchdog timer, and GPIO

# SYNOPSIS

`gcscpcib* at pci? dev ? function ?`
`gpio* at gcscpcib?`
`isa* at gcscpcib?`

# DESCRIPTION

The `gcscpcib` 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 `gcscpcib` 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 wdogctl(8) utility and the GPIO pins can be manipulated via the gpioctl(8) utility.

# SEE ALSO

gpio(4), i386/intro(4), isa(4), pci(4), pcib(4), gpioctl(8), wdogctl(8)

# HISTORY

The `gcscpcib` driver first appeared in OpenBSD 4.3 as `glxpcib` before being ported to NetBSD 5.0.

# AUTHORS

The `gcscpcib` driver was written by Michael Shalayeff and Yojiro UO. The GPIO parts were added by Marc Balmer <marc@msys.ch>.

February 17, 2017 | NetBSD 9.3