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ccf988b6 | 1 | ====================== |
13f35ac1 | 2 | Kernel driver i2c-ismt |
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3 | ====================== |
4 | ||
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5 | |
6 | Supported adapters: | |
7 | * Intel S12xx series SOCs | |
8 | ||
9 | Authors: | |
10 | Bill Brown <bill.e.brown@intel.com> | |
11 | ||
12 | ||
13 | Module Parameters | |
14 | ----------------- | |
15 | ||
16 | * bus_speed (unsigned int) | |
ccf988b6 | 17 | |
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18 | Allows changing of the bus speed. Normally, the bus speed is set by the BIOS |
19 | and never needs to be changed. However, some SMBus analyzers are too slow for | |
20 | monitoring the bus during debug, thus the need for this module parameter. | |
21 | Specify the bus speed in kHz. | |
ccf988b6 | 22 | |
13f35ac1 | 23 | Available bus frequency settings: |
ccf988b6 MCC |
24 | |
25 | ==== ========= | |
26 | 0 no change | |
27 | 80 kHz | |
28 | 100 kHz | |
29 | 400 kHz | |
30 | 1000 kHz | |
31 | ==== ========= | |
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32 | |
33 | ||
34 | Description | |
35 | ----------- | |
36 | ||
37 | The S12xx series of SOCs have a pair of integrated SMBus 2.0 controllers | |
38 | targeted primarily at the microserver and storage markets. | |
39 | ||
40 | The S12xx series contain a pair of PCI functions. An output of lspci will show | |
ccf988b6 | 41 | something similar to the following:: |
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42 | |
43 | 00:13.0 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 0 | |
44 | 00:13.1 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 1 |