gcscpcib
—
AMD CS553[56] PCI-ISA bridge with timecounter, watchdog timer,
and GPIO
gcscpcib* at pci? dev ? function ?
gpio* at gcscpcib?
isa* at gcscpcib?
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.
The gcscpcib
driver first appeared in
OpenBSD 4.3 as glxpcib
before
being ported to NetBSD 5.0.
The gcscpcib
driver was written by
Michael Shalayeff and Yojiro
UO. The GPIO parts were added by Marc Balmer
<marc@msys.ch>.