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Andreas Herrmann512d1022011-05-25 20:43:31 +02001Kernel 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
Andreas Herrmannd034fbf2012-10-29 18:50:47 +010013Author: Andreas Herrmann <herrmann.der.user@googlemail.com>
Andreas Herrmann512d1022011-05-25 20:43:31 +020014
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.