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1======================2Kernel driver i2c-ismt3======================4 5 6Supported adapters:7 * Intel S12xx series SOCs8 9Authors:10 Bill Brown <bill.e.brown@intel.com>11 12 13Module Parameters14-----------------15 16* bus_speed (unsigned int)17 18Allows changing of the bus speed. Normally, the bus speed is set by the BIOS19and never needs to be changed. However, some SMBus analyzers are too slow for20monitoring 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 change27 80 kHz28 100 kHz29 400 kHz30 1000 kHz31 ==== =========32 33 34Description35-----------36 37The S12xx series of SOCs have a pair of integrated SMBus 2.0 controllers38targeted primarily at the microserver and storage markets.39 40The S12xx series contain a pair of PCI functions. An output of lspci will show41something similar to the following::42 43 00:13.0 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 044 00:13.1 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 145