1====================== 2Kernel driver i2c-ismt 3====================== 4 5 6Supported adapters: 7 * Intel S12xx series SOCs 8 9Authors: 10 Bill Brown <bill.e.brown@intel.com> 11 12 13Module Parameters 14----------------- 15 16* bus_speed (unsigned int) 17 18Allows changing of the bus speed. Normally, the bus speed is set by the BIOS 19and never needs to be changed. However, some SMBus analyzers are too slow for 20monitoring the bus during debug, thus the need for this module parameter. 21Specify the bus speed in kHz. 22 23Available bus frequency settings: 24 25 ==== ========= 26 0 no change 27 80 kHz 28 100 kHz 29 400 kHz 30 1000 kHz 31 ==== ========= 32 33 34Description 35----------- 36 37The S12xx series of SOCs have a pair of integrated SMBus 2.0 controllers 38targeted primarily at the microserver and storage markets. 39 40The S12xx series contain a pair of PCI functions. An output of lspci will show 41something 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 45