IG4(4) FreeBSD Kernel Interfaces Manual IG4(4)
NAME
ig4 - Synopsys DesignWare I2C Controller
SYNOPSIS
To compile this driver into the kernel, place the following lines into
the kernel configuration file:
device ig4
device iicbus
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
ig4_load="YES"
DESCRIPTION
The ig4 driver provides access to peripherals attached to an I2C
controller.
HARDWARE
ig4 supports the I2C controllers based on Synopsys DesignWare IP that can
be found in Intel(R) Core(TM) processors starting from the fourth
generation, Intel(R) Bay Trail, Apollo Lake SoC families, and some AMD
systems.
SYSCTL VARIABLES
These sysctl(8) variables are available:
debug.ig4_dump This sysctl is a zero-based bit mask. When any of the
bits are set, a register dump is printed for every I2C
transfer on an ig4 device with the same unit number.
SEE ALSO
iic(4), iicbus(4)
AUTHORS
The ig4 driver was written for DragonFly by Matthew Dillon and
subsequently ported to FreeBSD by Michael Gmelin <
[email protected]>.
This manual page was written by Michael Gmelin <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 September 13, 2018 FreeBSD 14.1-RELEASE-p8