| Jae Hyun Yoo | bdcfb95 | 2022-02-08 16:36:38 +0100 | [diff] [blame] | 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. |
