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
not publicly available, but seems to be similar to the AMD-8111 SMBus 2.0 adapter.
i2c-nforce2 is a driver for the SMBuses included in the nVidia nForce2 MCP.
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.
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.