projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| bdcfb955 JHY |
1 | .. SPDX-License-Identifier: GPL-2.0 |
| 2 | ||
| 3 | Kernel driver peci-dimmtemp | |
| 4 | =========================== | |
| 5 | ||
| 6 | Supported chips: | |
| 7 | One of Intel server CPUs listed below which is connected to a PECI bus. | |
| 8 | * Intel Xeon E5/E7 v3 server processors | |
| 9 | Intel Xeon E5-14xx v3 family | |
| 10 | Intel Xeon E5-24xx v3 family | |
| 11 | Intel Xeon E5-16xx v3 family | |
| 12 | Intel Xeon E5-26xx v3 family | |
| 13 | Intel Xeon E5-46xx v3 family | |
| 14 | Intel Xeon E7-48xx v3 family | |
| 15 | Intel Xeon E7-88xx v3 family | |
| 16 | * Intel Xeon E5/E7 v4 server processors | |
| 17 | Intel Xeon E5-16xx v4 family | |
| 18 | Intel Xeon E5-26xx v4 family | |
| 19 | Intel Xeon E5-46xx v4 family | |
| 20 | Intel Xeon E7-48xx v4 family | |
| 21 | Intel Xeon E7-88xx v4 family | |
| 22 | * Intel Xeon Scalable server processors | |
| 23 | Intel Xeon D family | |
| 24 | Intel Xeon Bronze family | |
| 25 | Intel Xeon Silver family | |
| 26 | Intel Xeon Gold family | |
| 27 | Intel Xeon Platinum family | |
| 28 | ||
| 29 | Datasheet: Available from http://www.intel.com/design/literature.htm | |
| 30 | ||
| 31 | Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> | |
| 32 | ||
| 33 | Description | |
| 34 | ----------- | |
| 35 | ||
| 36 | This driver implements a generic PECI hwmon feature which provides | |
| 37 | Temperature sensor on DIMM readings that are accessible via the processor PECI interface. | |
| 38 | ||
| 39 | All temperature values are given in millidegree Celsius and will be measurable | |
| 40 | only when the target CPU is powered on. | |
| 41 | ||
| 42 | Sysfs interface | |
| 43 | ------------------- | |
| 44 | ||
| 45 | ======================= ======================================================= | |
| 46 | ||
| 47 | temp[N]_label Provides string "DIMM CI", where C is DIMM channel and | |
| 48 | I is DIMM index of the populated DIMM. | |
| 49 | temp[N]_input Provides current temperature of the populated DIMM. | |
| 50 | temp[N]_max Provides thermal control temperature of the DIMM. | |
| 51 | temp[N]_crit Provides shutdown temperature of the DIMM. | |
| 52 | ||
| 53 | ======================= ======================================================= | |
| 54 | ||
| 55 | Note: | |
| 56 | DIMM temperature attributes will appear when the client CPU's BIOS | |
| 57 | completes memory training and testing. |