========================= Kernel driver i2c-nforce2

Supported adapters:

nForce2 MCP 10de:0064
nForce2 Ultra 400 MCP 10de:0084
nForce3 Pro150 MCP 10de:00D4
nForce3 250Gb MCP 10de:00E4
nForce4 MCP 10de:0052
nForce4 MCP-04 10de:0034
nForce MCP51 10de:0264
nForce MCP55 10de:0368
nForce MCP61 10de:03EB
nForce MCP65 10de:0446
nForce MCP67 10de:0542
nForce MCP73 10de:07D8
nForce MCP78S 10de:0752
nForce MCP79 10de:0AA2

Datasheet: not publicly available, but seems to be similar to the AMD-8111 SMBus 2.0 adapter.

Authors: - Hans-Frieder Vogt [email protected], - Thomas Leibold [email protected], - Patrick Dreker [email protected]

Description

i2c-nforce2 is a driver for the SMBuses included in the nVidia nForce2 MCP.

If your lspci -v listing shows something like the following::

00:01.1 SMBus: nVidia Corporation: Unknown device 0064 (rev a2) Subsystem: Asustek Computer, Inc.: Unknown device 0c11 Flags: 66Mhz, fast devsel, IRQ 5 I/O ports at c000 [size=32] Capabilities: <available only to root>

then this driver should support the SMBuses of your motherboard.

Notes

The SMBus adapter in the nForce2 chipset seems to be very similar to the SMBus 2.0 adapter in the AMD-8111 south bridge. However, I could only get the driver to work with direct I/O access, which is different to the EC interface of the AMD-8111. Tested on Asus A7N8X. The ACPI DSDT table of the Asus A7N8X lists two SMBuses, both of which are supported by this driver.