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5aeb5d205e
This patch updates description of fam15h_power driver, its scope is extended to family 16h processsors. Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
40 lines
1.3 KiB
Plaintext
40 lines
1.3 KiB
Plaintext
Kernel driver fam15h_power
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==========================
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Supported chips:
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* AMD Family 15h Processors
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* AMD Family 16h Processors
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Prefix: 'fam15h_power'
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Addresses scanned: PCI space
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Datasheets:
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BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors
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BIOS and Kernel Developer's Guide (BKDG) For AMD Family 16h Processors
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Author: Andreas Herrmann <herrmann.der.user@googlemail.com>
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Description
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-----------
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This driver permits reading of registers providing power information
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of AMD Family 15h and 16h processors.
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For AMD Family 15h and 16h processors the following power values can
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be calculated using different processor northbridge function
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registers:
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* BasePwrWatts: Specifies in watts the maximum amount of power
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consumed by the processor for NB and logic external to the core.
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* ProcessorPwrWatts: Specifies in watts the maximum amount of power
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the processor can support.
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* CurrPwrWatts: Specifies in watts the current amount of power being
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consumed by the processor.
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This driver provides ProcessorPwrWatts and CurrPwrWatts:
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* power1_crit (ProcessorPwrWatts)
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* power1_input (CurrPwrWatts)
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On multi-node processors the calculated value is for the entire
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package and not for a single node. Thus the driver creates sysfs
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attributes only for internal node0 of a multi-node processor.
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