March 5, 2008 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), intro(4), isa(4), pci(4), pcib(4), gpioctl(8), wdogctl(8)

### HISTORY

The gcscpcib driver first appeared in NetBSD5.0.

### AUTHORS

The gcscpcib driver was written by Michael Shalayeff and Yojiro UO. The GPIO parts were added by Marc Balmer <mbalmer@openbsd.org>.