linux/Documentation/hwmon/fam15h_power

Kernel driver fam15h_power
==========================

Supported chips:
* AMD Family 15h Processors
* AMD Family 16h Processors

  Prefix: 'fam15h_power'
  Addresses scanned: PCI space
  Datasheets:
  BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors
  BIOS and Kernel Developer's Guide (BKDG) For AMD Family 16h Processors

Author: Andreas Herrmann <herrmann.der.user@googlemail.com>

Description
-----------

This driver permits reading of registers providing power information
of AMD Family 15h and 16h processors.

For AMD Family 15h and 16h processors the following power values can
be calculated using different processor northbridge function
registers:

* BasePwrWatts: Specifies in watts the maximum amount of power
  consumed by the processor for NB and logic external to the core.
* ProcessorPwrWatts: Specifies in watts the maximum amount of power
  the processor can support.
* CurrPwrWatts: Specifies in watts the current amount of power being
  consumed by the processor.

This driver provides ProcessorPwrWatts and CurrPwrWatts:
* power1_crit (ProcessorPwrWatts)
* power1_input (CurrPwrWatts)

On multi-node processors the calculated value is for the entire
package and not for a single node. Thus the driver creates sysfs
attributes only for internal node0 of a multi-node processor.