summaryrefslogtreecommitdiffstats
path: root/Documentation/i2c/busses/scx200_acb
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/i2c/busses/scx200_acb')
-rw-r--r--Documentation/i2c/busses/scx200_acb32
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/i2c/busses/scx200_acb b/Documentation/i2c/busses/scx200_acb
new file mode 100644
index 0000000..7c07883
--- /dev/null
+++ b/Documentation/i2c/busses/scx200_acb
@@ -0,0 +1,32 @@
+Kernel driver scx200_acb
+
+Author: Christer Weinigel <wingel@nano-system.com>
+
+The driver supersedes the older, never merged driver named i2c-nscacb.
+
+Module Parameters
+-----------------
+
+* base: up to 4 ints
+ Base addresses for the ACCESS.bus controllers on SCx200 and SC1100 devices
+
+ By default the driver uses two base addresses 0x820 and 0x840.
+ If you want only one base address, specify the second as 0 so as to
+ override this default.
+
+Description
+-----------
+
+Enable the use of the ACCESS.bus controller on the Geode SCx200 and
+SC1100 processors and the CS5535 and CS5536 Geode companion devices.
+
+Device-specific notes
+---------------------
+
+The SC1100 WRAP boards are known to use base addresses 0x810 and 0x820.
+If the scx200_acb driver is built into the kernel, add the following
+parameter to your boot command line:
+ scx200_acb.base=0x810,0x820
+If the scx200_acb driver is built as a module, add the following line to
+the file /etc/modprobe.conf instead:
+ options scx200_acb base=0x810,0x820
OpenPOWER on IntegriCloud