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1 | Kernel driver k10temp |
2 | ===================== |
3 | |
4 | Supported chips: |
5 | * AMD Family 10h processors: |
6 | Socket F: Quad-Core/Six-Core/Embedded Opteron (but see below) |
7 | Socket AM2+: Quad-Core Opteron, Phenom (II) X3/X4, Athlon X2 (but see below) |
8 | Socket AM3: Quad-Core Opteron, Athlon/Phenom II X2/X3/X4, Sempron II |
9 | Socket S1G3: Athlon II, Sempron, Turion II |
10 | * AMD Family 11h processors: |
11 | Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra) |
12 | * AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series) |
13 | * AMD Family 14h processors: "Brazos" (C/E/G/Z-Series) |
14 | * AMD Family 15h processors: "Bulldozer" |
15 | |
16 | Prefix: 'k10temp' |
17 | Addresses scanned: PCI space |
18 | Datasheets: |
19 | BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h Processors: |
20 | http://support.amd.com/us/Processor_TechDocs/31116.pdf |
21 | BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors: |
22 | http://support.amd.com/us/Processor_TechDocs/41256.pdf |
23 | BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors: |
24 | http://support.amd.com/us/Processor_TechDocs/41131.pdf |
25 | BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors: |
26 | http://support.amd.com/us/Processor_TechDocs/43170.pdf |
27 | Revision Guide for AMD Family 10h Processors: |
28 | http://support.amd.com/us/Processor_TechDocs/41322.pdf |
29 | Revision Guide for AMD Family 11h Processors: |
30 | http://support.amd.com/us/Processor_TechDocs/41788.pdf |
31 | Revision Guide for AMD Family 12h Processors: |
32 | http://support.amd.com/us/Processor_TechDocs/44739.pdf |
33 | Revision Guide for AMD Family 14h Models 00h-0Fh Processors: |
34 | http://support.amd.com/us/Processor_TechDocs/47534.pdf |
35 | AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks: |
36 | http://support.amd.com/us/Processor_TechDocs/43373.pdf |
37 | AMD Family 10h Server and Workstation Processor Power and Thermal Data Sheet: |
38 | http://support.amd.com/us/Processor_TechDocs/43374.pdf |
39 | AMD Family 10h Desktop Processor Power and Thermal Data Sheet: |
40 | http://support.amd.com/us/Processor_TechDocs/43375.pdf |
41 | |
42 | Author: Clemens Ladisch <clemens@ladisch.de> |
43 | |
44 | Description |
45 | ----------- |
46 | |
47 | This driver permits reading of the internal temperature sensor of AMD |
48 | Family 10h/11h/12h/14h/15h processors. |
49 | |
50 | All these processors have a sensor, but on those for Socket F or AM2+, |
51 | the sensor may return inconsistent values (erratum 319). The driver |
52 | will refuse to load on these revisions unless you specify the "force=1" |
53 | module parameter. |
54 | |
55 | Due to technical reasons, the driver can detect only the mainboard's |
56 | socket type, not the processor's actual capabilities. Therefore, if you |
57 | are using an AM3 processor on an AM2+ mainboard, you can safely use the |
58 | "force=1" parameter. |
59 | |
60 | There is one temperature measurement value, available as temp1_input in |
61 | sysfs. It is measured in degrees Celsius with a resolution of 1/8th degree. |
62 | Please note that it is defined as a relative value; to quote the AMD manual: |
63 | |
64 | Tctl is the processor temperature control value, used by the platform to |
65 | control cooling systems. Tctl is a non-physical temperature on an |
66 | arbitrary scale measured in degrees. It does _not_ represent an actual |
67 | physical temperature like die or case temperature. Instead, it specifies |
68 | the processor temperature relative to the point at which the system must |
69 | supply the maximum cooling for the processor's specified maximum case |
70 | temperature and maximum thermal power dissipation. |
71 | |
72 | The maximum value for Tctl is available in the file temp1_max. |
73 | |
74 | If the BIOS has enabled hardware temperature control, the threshold at |
75 | which the processor will throttle itself to avoid damage is available in |
76 | temp1_crit and temp1_crit_hyst. |
77 |
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