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=========================
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 <hfvogt@gmx.net>,
- Thomas Leibold <thomas@plx.com>,
- Patrick Dreker <patrick@dreker.de>
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.
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