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