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1.. SPDX-License-Identifier: GPL-2.02 3Kernel driver peci-dimmtemp4===========================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 processors9 Intel Xeon E5-14xx v3 family10 Intel Xeon E5-24xx v3 family11 Intel Xeon E5-16xx v3 family12 Intel Xeon E5-26xx v3 family13 Intel Xeon E5-46xx v3 family14 Intel Xeon E7-48xx v3 family15 Intel Xeon E7-88xx v3 family16 * Intel Xeon E5/E7 v4 server processors17 Intel Xeon E5-16xx v4 family18 Intel Xeon E5-26xx v4 family19 Intel Xeon E5-46xx v4 family20 Intel Xeon E7-48xx v4 family21 Intel Xeon E7-88xx v4 family22 * Intel Xeon Scalable server processors23 Intel Xeon D family24 Intel Xeon Bronze family25 Intel Xeon Silver family26 Intel Xeon Gold family27 Intel Xeon Platinum family28 29 Datasheet: Available from http://www.intel.com/design/literature.htm30 31Author: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>32 33Description34-----------35 36This driver implements a generic PECI hwmon feature which provides37Temperature sensor on DIMM readings that are accessible via the processor PECI interface.38 39All temperature values are given in millidegree Celsius and will be measurable40only when the target CPU is powered on.41 42Sysfs interface43-------------------44 45======================= =======================================================46 47temp[N]_label Provides string "DIMM CI", where C is DIMM channel and48 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 BIOS57 completes memory training and testing.58