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k10temp

k10temp 2.6 KB
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  1. Kernel driver k10temp
    2. 

  2. =====================
    3. 

  3. 

  4. Supported chips:
    5. 

  5. * AMD Family 10h processors:
    6. 

  6.   Socket F: Quad-Core/Six-Core/Embedded Opteron
    7. 

  7.   Socket AM2+: Opteron, Phenom (II) X3/X4
    8. 

  8.   Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II
    9. 

  9.   Socket S1G3: Athlon II, Sempron, Turion II
    10. 

  10. * AMD Family 11h processors:
    11. 

  11.   Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
    12. 

  12. 

  13.   Prefix: 'k10temp'
    14. 

  14.   Addresses scanned: PCI space
    15. 

  15.   Datasheets:
    16. 

  16.   BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors:
    17. 

  17.     http://support.amd.com/us/Processor_TechDocs/31116.pdf
    18. 

  18.   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
    19. 

  19.     http://support.amd.com/us/Processor_TechDocs/41256.pdf
    20. 

  20.   Revision Guide for AMD Family 10h Processors:
    21. 

  21.     http://support.amd.com/us/Processor_TechDocs/41322.pdf
    22. 

  22.   Revision Guide for AMD Family 11h Processors:
    23. 

  23.     http://support.amd.com/us/Processor_TechDocs/41788.pdf
    24. 

  24.   AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks:
    25. 

  25.     http://support.amd.com/us/Processor_TechDocs/43373.pdf
    26. 

  26.   AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet:
    27. 

  27.     http://support.amd.com/us/Processor_TechDocs/43374.pdf
    28. 

  28.   AMD Family 10h Desktop Processor Power and Thermal Data Sheet:
    29. 

  29.     http://support.amd.com/us/Processor_TechDocs/43375.pdf
    30. 

  30. 

  31. Author: Clemens Ladisch <clemens@ladisch.de>
    32. 

  32. 

  33. Description
    34. 

  34. -----------
    35. 

  35. 

  36. This driver permits reading of the internal temperature sensor of AMD
    37. 

  37. Family 10h and 11h processors.
    38. 

  38. 

  39. All these processors have a sensor, but on older revisions of Family 10h
    40. 

  40. processors, the sensor may return inconsistent values (erratum 319). The
    41. 

  41. driver will refuse to load on these revisions unless you specify the
    42. 

  42. "force=1" module parameter.
    43. 

  43. 

  44. There is one temperature measurement value, available as temp1_input in
    45. 

  45. sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree.
    46. 

  46. Please note that it is defined as a relative value; to quote the AMD manual:
    47. 

  47. 

  48.   Tctl is the processor temperature control value, used by the platform to
    49. 

  49.   control cooling systems. Tctl is a non-physical temperature on an
    50. 

  50.   arbitrary scale measured in degrees. It does _not_ represent an actual
    51. 

  51.   physical temperature like die or case temperature. Instead, it specifies
    52. 

  52.   the processor temperature relative to the point at which the system must
    53. 

  53.   supply the maximum cooling for the processor's specified maximum case
    54. 

  54.   temperature and maximum thermal power dissipation.
    55. 

  55. 

  56. The maximum value for Tctl is available in the file temp1_max.
    57. 

  57. 

  58. If the BIOS has enabled hardware temperature control, the threshold at
    59. 

  59. which the processor will throttle itself to avoid damage is available in
    60. 

  60. temp1_crit and temp1_crit_hyst.
    61.