diff options
Diffstat (limited to 'Documentation/i2c/busses')
-rw-r--r-- | Documentation/i2c/busses/scx200_acb | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/Documentation/i2c/busses/scx200_acb b/Documentation/i2c/busses/scx200_acb index f50e69981ec6..7c07883d4dfc 100644 --- a/Documentation/i2c/busses/scx200_acb +++ b/Documentation/i2c/busses/scx200_acb | |||
@@ -2,14 +2,31 @@ Kernel driver scx200_acb | |||
2 | 2 | ||
3 | Author: Christer Weinigel <wingel@nano-system.com> | 3 | Author: Christer Weinigel <wingel@nano-system.com> |
4 | 4 | ||
5 | The driver supersedes the older, never merged driver named i2c-nscacb. | ||
6 | |||
5 | Module Parameters | 7 | Module Parameters |
6 | ----------------- | 8 | ----------------- |
7 | 9 | ||
8 | * base: int | 10 | * base: up to 4 ints |
9 | Base addresses for the ACCESS.bus controllers on SCx200 and SC1100 devices | 11 | Base addresses for the ACCESS.bus controllers on SCx200 and SC1100 devices |
10 | 12 | ||
13 | By default the driver uses two base addresses 0x820 and 0x840. | ||
14 | If you want only one base address, specify the second as 0 so as to | ||
15 | override this default. | ||
16 | |||
11 | Description | 17 | Description |
12 | ----------- | 18 | ----------- |
13 | 19 | ||
14 | Enable the use of the ACCESS.bus controller on the Geode SCx200 and | 20 | Enable the use of the ACCESS.bus controller on the Geode SCx200 and |
15 | SC1100 processors and the CS5535 and CS5536 Geode companion devices. | 21 | SC1100 processors and the CS5535 and CS5536 Geode companion devices. |
22 | |||
23 | Device-specific notes | ||
24 | --------------------- | ||
25 | |||
26 | The SC1100 WRAP boards are known to use base addresses 0x810 and 0x820. | ||
27 | If the scx200_acb driver is built into the kernel, add the following | ||
28 | parameter to your boot command line: | ||
29 | scx200_acb.base=0x810,0x820 | ||
30 | If the scx200_acb driver is built as a module, add the following line to | ||
31 | the file /etc/modprobe.conf instead: | ||
32 | options scx200_acb base=0x810,0x820 | ||