1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 Kernel driver peci-dimmtemp 3 Kernel driver peci-dimmtemp
4 =========================== 4 ===========================
5 5
6 Supported chips: 6 Supported chips:
7 One of Intel server CPUs listed below 7 One of Intel server CPUs listed below which is connected to a PECI bus.
8 * Intel Xeon E5/E7 v3 server p 8 * Intel Xeon E5/E7 v3 server processors
9 Intel Xeon E5-14xx v3 9 Intel Xeon E5-14xx v3 family
10 Intel Xeon E5-24xx v3 10 Intel Xeon E5-24xx v3 family
11 Intel Xeon E5-16xx v3 11 Intel Xeon E5-16xx v3 family
12 Intel Xeon E5-26xx v3 12 Intel Xeon E5-26xx v3 family
13 Intel Xeon E5-46xx v3 13 Intel Xeon E5-46xx v3 family
14 Intel Xeon E7-48xx v3 14 Intel Xeon E7-48xx v3 family
15 Intel Xeon E7-88xx v3 15 Intel Xeon E7-88xx v3 family
16 * Intel Xeon E5/E7 v4 server p 16 * Intel Xeon E5/E7 v4 server processors
17 Intel Xeon E5-16xx v4 17 Intel Xeon E5-16xx v4 family
18 Intel Xeon E5-26xx v4 18 Intel Xeon E5-26xx v4 family
19 Intel Xeon E5-46xx v4 19 Intel Xeon E5-46xx v4 family
20 Intel Xeon E7-48xx v4 20 Intel Xeon E7-48xx v4 family
21 Intel Xeon E7-88xx v4 21 Intel Xeon E7-88xx v4 family
22 * Intel Xeon Scalable server p 22 * Intel Xeon Scalable server processors
23 Intel Xeon D family 23 Intel Xeon D family
24 Intel Xeon Bronze fami 24 Intel Xeon Bronze family
25 Intel Xeon Silver fami 25 Intel Xeon Silver family
26 Intel Xeon Gold family 26 Intel Xeon Gold family
27 Intel Xeon Platinum fa 27 Intel Xeon Platinum family
28 28
29 Datasheet: Available from http://www.i 29 Datasheet: Available from http://www.intel.com/design/literature.htm
30 30
31 Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel. 31 Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
32 32
33 Description 33 Description
34 ----------- 34 -----------
35 35
36 This driver implements a generic PECI hwmon fe 36 This driver implements a generic PECI hwmon feature which provides
37 Temperature sensor on DIMM readings that are a 37 Temperature sensor on DIMM readings that are accessible via the processor PECI interface.
38 38
39 All temperature values are given in millidegre 39 All temperature values are given in millidegree Celsius and will be measurable
40 only when the target CPU is powered on. 40 only when the target CPU is powered on.
41 41
42 Sysfs interface 42 Sysfs interface
43 ------------------- 43 -------------------
44 44
45 ======================= ====================== 45 ======================= =======================================================
46 46
47 temp[N]_label Provides string "DIMM 47 temp[N]_label Provides string "DIMM CI", where C is DIMM channel and
48 I is DIMM index of the 48 I is DIMM index of the populated DIMM.
49 temp[N]_input Provides current tempe 49 temp[N]_input Provides current temperature of the populated DIMM.
50 temp[N]_max Provides thermal contr 50 temp[N]_max Provides thermal control temperature of the DIMM.
51 temp[N]_crit Provides shutdown temp 51 temp[N]_crit Provides shutdown temperature of the DIMM.
52 52
53 ======================= ====================== 53 ======================= =======================================================
54 54
55 Note: 55 Note:
56 DIMM temperature attributes will appea 56 DIMM temperature attributes will appear when the client CPU's BIOS
57 completes memory training and testing. 57 completes memory training and testing.
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