SMBus multiplexing on the Tyan S4985

modulename: i2c-nforce2-s4985.ko

configname: CONFIG_I2C_NFORCE2_S4985

Linux Kernel Configuration
└─>Device Drivers
└─>I2C support
└─>I2C Hardware Bus support
└─>SMBus multiplexing on the Tyan S4985
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
Enabling this option will add specific SMBus support for the Tyan
S4985 motherboard. On this 4-CPU board, the SMBus is multiplexed
over 4 different channels, where the various memory module EEPROMs
live. Saying yes here will give you access to these in addition
to the trunk.

This driver can also be built as a module. If so, the module
will be called i2c-nforce2-s4985.

source code: