lm-sensors configuration for the ASUS PRIME Z370-A motherboard

PRIME-Z370-A.conf

# lm-sensors configuration for the ASUS PRIME Z370-A motherboard
#
# Manufacturer: ASUSTeK COMPUTER INC.
# Product Name: PRIME Z370-A
# Version: Rev 1.04
# Super I/O: NCT6793D
# UEFI versions tested: 0805, 1601
#
# Recommended drivers: coretemp, nct6775
# Other Z370 boards from ASUS might use a similar setup
#
# dmesg might show that the kernel failed to bind the nct6775 driver due to an
# ACPI conflict between SystemIO and OpRegion ranges.  Ideally a WMI driver
# should be used instead of directly accessing the Super I/O chip but,
# unfortunally, very little is exposed via WMI, even on the latest UEFI.
#
# You can allow the driver to bind to the chip, regardless of the conflict, by
# setting the kernel command line option:
#
#     acpi_enforce_resources=lax
#
# This is not known to cause issues on the PRIME Z370-A, but you might still
# want to disable thermal and blacklist eeepc_wmi to minimize conflicts:
#
#     thermal.off=1 module_blacklist=eeepc_wmi
#
# Jonas Malaco, 2019
#
# Updated 2024-01-21: ignore newly supported but not functioning NCT6793D sensors

chip "coretemp-*"

  label temp1 "CPU Package DTS"
  label temp2 "CPU Core 1 DTS"
  label temp3 "CPU Core 2 DTS"
  label temp4 "CPU Core 3 DTS"
  label temp5 "CPU Core 4 DTS"
  label temp6 "CPU Core 5 DTS"
  label temp7 "CPU Core 6 DTS"
  label temp8 "CPU Core 7 DTS"
  label temp9 "CPU Core 8 DTS"

chip "nct6793-*"

  label in0 "CPU Core Voltage"
  compute in0 @ * 2, @ / 2
  set in0_max 1.42  # 1.35 V at load/1.42 V max is generally accepted as safe
                    # for 24/7 i7-8700K

  label in1 "ATX +5 V Voltage"
  compute in1 @ * 5, @ / 5
  set in1_max 5 * 1.05  # ATX 2.4
  set in1_min 5 * 0.95  # ATX 2.4

  # analog +3.3 V power rail for the Super I/O analog circuits
  label in2 "AVCC Analog Voltage"
  set in2_max 3.3 * 1.05  # assume ATX ±5% is enough
  set in2_min 3.3 * 0.95  # assume ATX ±5% is enough

  label in3 "ATX +3.3 V Voltage"
  set in3_max 3.3 * 1.05  # ATX 2.4
  set in3_min 3.3 * 0.95  # ATX 2.4

  label in4 "ATX +12 V Voltage"
  compute in4 @ * 12, @ / 12
  set in4_max 12 * 1.05  # ATX 2.4
  set in4_min 12 * 0.95  # ATX 2.4

  label in6 "CPU Graphics Voltage"
  compute in6 @ * 2, @ / 2
  set in6_max in0_max  # little is known, but specs are similar for IA and GT

  # +3.3 V stand-by power rail for digital circuits
  label in7 "3VSB Standby Voltage"
  set in7_max 3.3 * 1.05  # assume ATX ±5% is enough
  set in7_min 3.3 * 0.95  # assume ATX ±5% is enough

  # +3 V on-board battery for PCH RTC Power Well (RTC & CMOS RAM) and select
  # Super I/O features (e.g. case intrusion detection)
  label in8 "RTC Battery Voltage"
  set in8_max 3.4  # from random CR2032 datasheet
  set in8_min 2.0  # from Intel 200-series chipset spec

  # VTT for PECI on the Super I/O; should come from CPU VCCST (sustain/standby)
  label in9 "CPU Sustain Voltage"
  set in9_max 1.00 * 1.05  # from Intel 8-th gen spec
  set in9_min 1.00 * 0.95  # from Intel 8-th gen spec
  # note: there is a small difference between SIO VTT and CPU VCCST as reported
  # by the ASUS EC/UEFI

  label in10 "DRAM Voltage"
  compute in10 @ * 2, @ / 2
  set in10_max 1.5  # max certified Intel XMP 2.0 kits for LGA1151; generally
                    # accepted as safe for 24/7 Samsung B dies as well

  label in11 "CPU System Agent Voltage"
  set in11_max 1.35  # generally accepted limit to avoid degradation
  set in11_min 1.05 * 0.95  # from Intel 8-th gen spec

  label in12 "PCH Core Voltage"
  set in12_max 1.0 * 1.05  # from Intel 200-series chipset spec
  set in12_min 1.0 * 0.95  # from Intel 200-series chipset spec

  label in14 "CPU IO Voltage"
  set in14_max 1.25  # generally accepted limit to avoid degradation
  set in14_min 0.95 * 0.95  # from Intel 8-th gen spec

  ignore in5   # unknown
  ignore in13  # unknown
  # note: DMI voltage is not monitored by this chip (only ASUS EC)

  label temp1 "Board Temperature"
  label temp8 "T_SENSOR Header"

  # CPU package temperature from the PECI: with less noise than the raw DTS
  # (as read by coretemp), this is the recommended sensor for basic monitoring
  label temp7 "CPU Temperature"

  # CPU temperature shown in/used by the UEFI: significantly lower than the
  # package temperature and with frequent over/undershoots, but kept here
  # because it is the default sensor in the UEFI for fan control
  label temp9 "UEFI CPU Temperature"

  # CPUTIN does not report the CPU temperature
  ignore temp2   # maybe CPU socket temperature

  # AUXTIN is not functional/does not report sensible values
  ignore temp3   # somewhat related to GT usage
  ignore temp4
  ignore temp5
  ignore temp6

  # PCH temperatures are not monitored by this chip (only ASUS EC)
  ignore temp10
  ignore temp11
  ignore temp12
  ignore temp13

  # Ignore TSI registers that only report garbage
  ignore temp14
  ignore temp15
  ignore temp16
  ignore temp17
  ignore temp18
  ignore temp19
  ignore temp20

  label fan1 "CHA_FAN1 Header"
  label fan2 "CPU_FAN Header"
  label fan3 "M_2_FAN Header"
  label fan5 "AIO_PUMP Header"
  label fan6 "CHA_FAN2 Header"

  ignore fan4  # does not match any physical header/always zero
  # note: CPU_OPT header is not monitored by this chip (only ASUS EC)