|  | Kernel driver i2c-ismt | 
|  |  | 
|  | Supported adapters: | 
|  | * Intel S12xx series SOCs | 
|  |  | 
|  | Authors: | 
|  | Bill Brown <bill.e.brown@intel.com> | 
|  |  | 
|  |  | 
|  | Module Parameters | 
|  | ----------------- | 
|  |  | 
|  | * bus_speed (unsigned int) | 
|  | Allows changing of the bus speed.  Normally, the bus speed is set by the BIOS | 
|  | and never needs to be changed.  However, some SMBus analyzers are too slow for | 
|  | monitoring the bus during debug, thus the need for this module parameter. | 
|  | Specify the bus speed in kHz. | 
|  | Available bus frequency settings: | 
|  | 0  no change | 
|  | 80 kHz | 
|  | 100 kHz | 
|  | 400 kHz | 
|  | 1000 kHz | 
|  |  | 
|  |  | 
|  | Description | 
|  | ----------- | 
|  |  | 
|  | The S12xx series of SOCs have a pair of integrated SMBus 2.0 controllers | 
|  | targeted primarily at the microserver and storage markets. | 
|  |  | 
|  | The S12xx series contain a pair of PCI functions.  An output of lspci will show | 
|  | something similar to the following: | 
|  |  | 
|  | 00:13.0 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 0 | 
|  | 00:13.1 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 1 |