xref: /linux/Documentation/i2c/busses/scx200_acb.rst (revision 6fdcba32711044c35c0e1b094cbd8f3f0b4472c9)
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2Kernel driver scx200_acb
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4
5Author: Christer Weinigel <wingel@nano-system.com>
6
7The driver supersedes the older, never merged driver named i2c-nscacb.
8
9Module Parameters
10-----------------
11
12* base: up to 4 ints
13  Base addresses for the ACCESS.bus controllers on SCx200 and SC1100 devices
14
15  By default the driver uses two base addresses 0x820 and 0x840.
16  If you want only one base address, specify the second as 0 so as to
17  override this default.
18
19Description
20-----------
21
22Enable the use of the ACCESS.bus controller on the Geode SCx200 and
23SC1100 processors and the CS5535 and CS5536 Geode companion devices.
24
25Device-specific notes
26---------------------
27
28The SC1100 WRAP boards are known to use base addresses 0x810 and 0x820.
29If the scx200_acb driver is built into the kernel, add the following
30parameter to your boot command line::
31
32  scx200_acb.base=0x810,0x820
33
34If the scx200_acb driver is built as a module, add the following line to
35a configuration file in /etc/modprobe.d/ instead::
36
37  options scx200_acb base=0x810,0x820
38