1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver drivetemp 4======================= 5 6 7References 8---------- 9 10ANS T13/1699-D 11Information technology - AT Attachment 8 - ATA/ATAPI Command Set (ATA8-ACS) 12 13ANS Project T10/BSR INCITS 513 14Information technology - SCSI Primary Commands - 4 (SPC-4) 15 16ANS Project INCITS 557 17Information technology - SCSI / ATA Translation - 5 (SAT-5) 18 19 20Description 21----------- 22 23This driver supports reporting the temperature of disk and solid state 24drives with temperature sensors. 25 26If supported, it uses the ATA SCT Command Transport feature to read 27the current drive temperature and, if available, temperature limits 28as well as historic minimum and maximum temperatures. If SCT Command 29Transport is not supported, the driver uses SMART attributes to read 30the drive temperature. 31 32 33Sysfs entries 34------------- 35 36Only the temp1_input attribute is always available. Other attributes are 37available only if reported by the drive. All temperatures are reported in 38milli-degrees Celsius. 39 40======================= ===================================================== 41temp1_input Current drive temperature 42temp1_lcrit Minimum temperature limit. Operating the device below 43 this temperature may cause physical damage to the 44 device. 45temp1_min Minimum recommended continuous operating limit 46temp1_max Maximum recommended continuous operating temperature 47temp1_crit Maximum temperature limit. Operating the device above 48 this temperature may cause physical damage to the 49 device. 50temp1_lowest Minimum temperature seen this power cycle 51temp1_highest Maximum temperature seen this power cycle 52======================= ===================================================== 53