table of contents
GLXIIC(4) | Device Drivers Manual (i386) | GLXIIC(4) |
NAME¶
glxiic
—
Geode LX CS5536 I2C controller driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel configuration file:device pci
device isa
device glxiic
device iicbus
glxiic_load="YES"
DESCRIPTION¶
Theglxiic
driver supports the System
Management Bus controller of the Geode LX series CS5536 Companion Device. The
Geode LX is a member of the AMD Geode family of integrated x86 system chips.
Although AMD refers to this device as a System Management Bus (SMBus)
controller, it is really an I2C controller (it lacks SMBus ALERT# and Alert
Response support).
The glxiic
driver supports both I2C master
and slave mode.
SYSCTL VARIABLE¶
Theglxiic
driver supports the following
variable as both sysctl(8) and
loader(8) tunable:
- dev.glxiic.0.timeout
- This variable controls the I2C bus timeout in milliseconds. The default timeout is 35 milliseconds. A value of zero disables the timeout.
CAVEAT¶
Theglxiic
driver uses the interrupt line
number configured by the board firmware by default. If no interrupt line
number has been configured by the board firmware (or to override the interrupt
line number configured by board firmware), place the following line in
device.hints(5):
hint.glxiic.0.irq="10"
The interrupt line number must be between 1 and 15.
SEE ALSO¶
iicbus(4), device.hints(5), loader.conf(5), loader(8), sysctl(8)HISTORY¶
Theglxiic
device driver and manual page
first appeared in FreeBSD 9.0.
AUTHORS¶
Theglxiic
device driver and manual page were
written by Henrik Brix Andersen
⟨brix@FreeBSD.org⟩.May 15, 2011 | Debian |