This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / Documentation / i2c / busses / i2c-nforce2

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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
+
+Datasheet: not publically available, but seems to be similar to the
+           AMD-8111 SMBus 2.0 adapter.
+
+Authors:
+       Hans-Frieder Vogt <hfvogt@arcor.de>, 
+       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 southbridge. 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.