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| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2011-05-25 20:43:31 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-05-25 20:43:31 +0200 |
| commit | 512d1027a6c58def3c2a410e8be65b7e730aad3b (patch) | |
| tree | a83a92937cb27a135f56610b299dbcac5fbcaa2f /Documentation/hwmon/fam15h_power | |
| parent | hwmon: (k10temp) Add support for Fam15h (Bulldozer) (diff) | |
| download | linux-512d1027a6c58def3c2a410e8be65b7e730aad3b.tar.xz linux-512d1027a6c58def3c2a410e8be65b7e730aad3b.zip | |
hwmon: Add driver for AMD family 15h processor power information
This CPU family provides NB register values to gather following
TDP information
* 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
* power1_crit (ProcessorPwrWatts)
* power1_input (CurrPwrWatts)
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation/hwmon/fam15h_power')
| -rw-r--r-- | Documentation/hwmon/fam15h_power | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/hwmon/fam15h_power b/Documentation/hwmon/fam15h_power new file mode 100644 index 000000000000..a92918e0bd69 --- /dev/null +++ b/Documentation/hwmon/fam15h_power @@ -0,0 +1,37 @@ +Kernel driver fam15h_power +========================== + +Supported chips: +* AMD Family 15h Processors + + Prefix: 'fam15h_power' + Addresses scanned: PCI space + Datasheets: + BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors + (not yet published) + +Author: Andreas Herrmann <andreas.herrmann3@amd.com> + +Description +----------- + +This driver permits reading of registers providing power information +of AMD Family 15h processors. + +For AMD Family 15h 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. |