i2c-ismt.rst 1.1 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344
  1. ======================
  2. Kernel driver i2c-ismt
  3. ======================
  4. Supported adapters:
  5. * Intel S12xx series SOCs
  6. Authors:
  7. Bill Brown <[email protected]>
  8. Module Parameters
  9. -----------------
  10. * bus_speed (unsigned int)
  11. Allows changing of the bus speed. Normally, the bus speed is set by the BIOS
  12. and never needs to be changed. However, some SMBus analyzers are too slow for
  13. monitoring the bus during debug, thus the need for this module parameter.
  14. Specify the bus speed in kHz.
  15. Available bus frequency settings:
  16. ==== =========
  17. 0 no change
  18. 80 kHz
  19. 100 kHz
  20. 400 kHz
  21. 1000 kHz
  22. ==== =========
  23. Description
  24. -----------
  25. The S12xx series of SOCs have a pair of integrated SMBus 2.0 controllers
  26. targeted primarily at the microserver and storage markets.
  27. The S12xx series contain a pair of PCI functions. An output of lspci will show
  28. something similar to the following::
  29. 00:13.0 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 0
  30. 00:13.1 System peripheral: Intel Corporation Centerton SMBus 2.0 Controller 1