Documentation/hwmon/k10temp

   1 Kernel driver k10temp
   2 =====================
   3
   4 Supported chips:
   5
   6 * AMD Family 10h processors:
   7
   8   Socket F: Quad-Core/Six-Core/Embedded Opteron (but see below)
   9
  10   Socket AM2+: Quad-Core Opteron, Phenom (II) X3/X4, Athlon X2 (but see below)
  11
  12   Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II
  13
  14   Socket S1G3: Athlon II, Sempron, Turion II
  15
  16 * AMD Family 11h processors:
  17
  18   Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
  19
  20 * AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)
  21
  22 * AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
  23
  24 * AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", "Carrizo"
  25
  26 * AMD Family 16h processors: "Kabini", "Mullins"
  27
  28   Prefix: 'k10temp'
  29
  30   Addresses scanned: PCI space
  31
  32   Datasheets:
  33
  34   BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors:
  35
  36     http://support.amd.com/us/Processor_TechDocs/31116.pdf
  37
  38   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
  39
  40     http://support.amd.com/us/Processor_TechDocs/41256.pdf
  41
  42   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors:
  43
  44     http://support.amd.com/us/Processor_TechDocs/41131.pdf
  45
  46   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors:
  47
  48     http://support.amd.com/us/Processor_TechDocs/43170.pdf
  49
  50   Revision Guide for AMD Family 10h Processors:
  51
  52     http://support.amd.com/us/Processor_TechDocs/41322.pdf
  53
  54   Revision Guide for AMD Family 11h Processors:
  55
  56     http://support.amd.com/us/Processor_TechDocs/41788.pdf
  57
  58   Revision Guide for AMD Family 12h Processors:
  59
  60     http://support.amd.com/us/Processor_TechDocs/44739.pdf
  61
  62   Revision Guide for AMD Family 14h Models 00h-0Fh Processors:
  63
  64     http://support.amd.com/us/Processor_TechDocs/47534.pdf
  65
  66   AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks:
  67
  68     http://support.amd.com/us/Processor_TechDocs/43373.pdf
  69
  70   AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet:
  71
  72     http://support.amd.com/us/Processor_TechDocs/43374.pdf
  73
  74   AMD Family 10h Desktop Processor Power and Thermal Data Sheet:
  75
  76     http://support.amd.com/us/Processor_TechDocs/43375.pdf
  77
  78 Author: Clemens Ladisch <clemens@ladisch.de>
  79
  80 Description
  81 -----------
  82
  83 This driver permits reading of the internal temperature sensor of AMD
  84 Family 10h/11h/12h/14h/15h/16h processors.
  85
  86 All these processors have a sensor, but on those for Socket F or AM2+,
  87 the sensor may return inconsistent values (erratum 319).  The driver
  88 will refuse to load on these revisions unless you specify the "force=1"
  89 module parameter.
  90
  91 Due to technical reasons, the driver can detect only the mainboard's
  92 socket type, not the processor's actual capabilities.  Therefore, if you
  93 are using an AM3 processor on an AM2+ mainboard, you can safely use the
  94 "force=1" parameter.
  95
  96 There is one temperature measurement value, available as temp1_input in
  97 sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree.
  98 Please note that it is defined as a relative value; to quote the AMD manual::
  99
 100   Tctl is the processor temperature control value, used by the platform to
 101   control cooling systems. Tctl is a non-physical temperature on an
 102   arbitrary scale measured in degrees. It does _not_ represent an actual
 103   physical temperature like die or case temperature. Instead, it specifies
 104   the processor temperature relative to the point at which the system must
 105   supply the maximum cooling for the processor's specified maximum case
 106   temperature and maximum thermal power dissipation.
 107
 108 The maximum value for Tctl is available in the file temp1_max.
 109
 110 If the BIOS has enabled hardware temperature control, the threshold at
 111 which the processor will throttle itself to avoid damage is available in
 112 temp1_crit and temp1_crit_hyst.