diff options
author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2011-05-25 14:43:31 -0400 |
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committer | Jean Delvare <khali@endymion.delvare> | 2011-05-25 14:43:31 -0400 |
commit | 512d1027a6c58def3c2a410e8be65b7e730aad3b (patch) | |
tree | a83a92937cb27a135f56610b299dbcac5fbcaa2f /Documentation/hwmon | |
parent | 9e5813111265ad3c37a4370f0ee7e634dc07a7d6 (diff) |
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')
-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 00000000000..a92918e0bd6 --- /dev/null +++ b/Documentation/hwmon/fam15h_power | |||
@@ -0,0 +1,37 @@ | |||
1 | Kernel driver fam15h_power | ||
2 | ========================== | ||
3 | |||
4 | Supported 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 | |||
13 | Author: Andreas Herrmann <andreas.herrmann3@amd.com> | ||
14 | |||
15 | Description | ||
16 | ----------- | ||
17 | |||
18 | This driver permits reading of registers providing power information | ||
19 | of AMD Family 15h processors. | ||
20 | |||
21 | For AMD Family 15h processors the following power values can be | ||
22 | calculated 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 | |||
31 | This driver provides ProcessorPwrWatts and CurrPwrWatts: | ||
32 | * power1_crit (ProcessorPwrWatts) | ||
33 | * power1_input (CurrPwrWatts) | ||
34 | |||
35 | On multi-node processors the calculated value is for the entire | ||
36 | package and not for a single node. Thus the driver creates sysfs | ||
37 | attributes only for internal node0 of a multi-node processor. | ||