linux/Documentation/hwmon/fam15h_power
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   1Kernel driver fam15h_power
   2==========================
   3
   4Supported chips:
   5* AMD Family 15h Processors
   6
   7  Prefix: 'fam15h_power'
   8  Addresses scanned: PCI space
   9  Datasheets:
  10  BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors
  11    (not yet published)
  12
  13Author: Andreas Herrmann <herrmann.der.user@googlemail.com>
  14
  15Description
  16-----------
  17
  18This driver permits reading of registers providing power information
  19of AMD Family 15h processors.
  20
  21For AMD Family 15h processors the following power values can be
  22calculated using different processor northbridge function registers:
  23
  24* BasePwrWatts: Specifies in watts the maximum amount of power
  25  consumed by the processor for NB and logic external to the core.
  26* ProcessorPwrWatts: Specifies in watts the maximum amount of power
  27  the processor can support.
  28* CurrPwrWatts: Specifies in watts the current amount of power being
  29  consumed by the processor.
  30
  31This driver provides ProcessorPwrWatts and CurrPwrWatts:
  32* power1_crit (ProcessorPwrWatts)
  33* power1_input (CurrPwrWatts)
  34
  35On multi-node processors the calculated value is for the entire
  36package and not for a single node. Thus the driver creates sysfs
  37attributes only for internal node0 of a multi-node processor.
  38
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