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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/i2c/busses/i2c-nforce2
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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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.