1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver peci-dimmtemp 4=========================== 5 6Supported 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 31Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> 32 33Description 34----------- 35 36This driver implements a generic PECI hwmon feature which provides 37Temperature sensor on DIMM readings that are accessible via the processor PECI interface. 38 39All temperature values are given in millidegree Celsius and will be measurable 40only when the target CPU is powered on. 41 42Sysfs interface 43------------------- 44 45======================= ======================================================= 46 47temp[N]_label Provides string "DIMM CI", where C is DIMM channel and 48 I is DIMM index of the populated DIMM. 49temp[N]_input Provides current temperature of the populated DIMM. 50temp[N]_max Provides thermal control temperature of the DIMM. 51temp[N]_crit Provides shutdown temperature of the DIMM. 52 53======================= ======================================================= 54 55Note: 56 DIMM temperature attributes will appear when the client CPU's BIOS 57 completes memory training and testing. 58