1 Kernel driver k8temp
2 ====================
3
4 Supported chips:
5
6 * AMD Athlon64/FX or Opteron CPUs
7
8 Prefix: 'k8temp'
9
10 Addresses scanned: PCI space
11
12 Datasheet: https://www.amd.com/system/file
13
14 Author: Rudolf Marek
15
16 Contact: Rudolf Marek <r.marek@assembler.cz>
17
18 Description
19 -----------
20
21 This driver permits reading temperature sensor
22 family CPUs (Athlon64/FX, Opteron). Official d
23 from revision F of K8 core, but in fact it see
24 revisions of K8 except the first two revisions
25
26 Please note that you will need at least lm-sen
27 support.
28
29 There can be up to four temperature sensors in
30 will auto-detect the sensors and will display
31 implemented sensors.
32
33 Mapping of /sys files is as follows:
34
35 ============= ================================
36 temp1_input temperature of Core 0 and "place
37 temp2_input temperature of Core 0 and "place
38 temp3_input temperature of Core 1 and "place
39 temp4_input temperature of Core 1 and "place
40 ============= ================================
41
42 Temperatures are measured in degrees Celsius a
43 1 degree C. It is expected that future CPU wil
44 temperature is updated once a second. Valid te
45 206 degrees C.
46
47 Temperature known as TCaseMax was specified fo
48 This temperature is defined as temperature bet
49 case, so the internal CPU temperature supplied
50 There is no easy way how to measure the temper
51 with TCaseMax temperature.
52
53 For newer revisions of CPU (rev F, socket AM2)
54 computed temperature called TControl, which mu
55
56 The relationship is following:
57
58 temp1_input - TjOffset*2 < TControlMax
59
60 TjOffset is not yet exported by the driver, TC
61 70 degrees C. The rule of the thumb -> CPU tem
62 60 degrees C too much.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.