1 ====================== 2 Kernel driver i2c-ismt 3 ====================== 4 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) 17 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. 22 23 Available bus frequency settings: 24 25 ==== ========= 26 0 no change 27 80 kHz 28 100 kHz 29 400 kHz 30 1000 kHz 31 ==== ========= 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 41 something similar to the following:: 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
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