1.. SPDX-License-Identifier: GPL-2.0-or-later 2 3Kernel driver asus_ec_sensors 4================================= 5 6Supported boards: 7 * MAXIMUS VI HERO 8 * PRIME X470-PRO 9 * PRIME X570-PRO 10 * PRIME X670E-PRO WIFI 11 * Pro WS X570-ACE 12 * ProArt X570-CREATOR WIFI 13 * ProArt X670E-CREATOR WIFI 14 * ProArt B550-CREATOR 15 * ROG CROSSHAIR VIII DARK HERO 16 * ROG CROSSHAIR VIII HERO (WI-FI) 17 * ROG CROSSHAIR VIII FORMULA 18 * ROG CROSSHAIR VIII HERO 19 * ROG CROSSHAIR VIII IMPACT 20 * ROG CROSSHAIR X670E HERO 21 * ROG CROSSHAIR X670E GENE 22 * ROG MAXIMUS XI HERO 23 * ROG MAXIMUS XI HERO (WI-FI) 24 * ROG MAXIMUS Z690 FORMULA 25 * ROG STRIX B550-E GAMING 26 * ROG STRIX B550-I GAMING 27 * ROG STRIX X570-E GAMING 28 * ROG STRIX X570-E GAMING WIFI II 29 * ROG STRIX X570-F GAMING 30 * ROG STRIX X570-I GAMING 31 * ROG STRIX Z390-F GAMING 32 * ROG STRIX Z690-A GAMING WIFI D4 33 * ROG ZENITH II EXTREME 34 * ROG ZENITH II EXTREME ALPHA 35 * TUF GAMING X670E PLUS 36 37Authors: 38 - Eugene Shalygin <eugene.shalygin@gmail.com> 39 40Description: 41------------ 42ASUS mainboards publish hardware monitoring information via Super I/O 43chip and the ACPI embedded controller (EC) registers. Some of the sensors 44are only available via the EC. 45 46The driver is aware of and reads the following sensors: 47 481. Chipset (PCH) temperature 492. CPU package temperature 503. Motherboard temperature 514. Readings from the T_Sensor header 525. VRM temperature 536. CPU_Opt fan RPM 547. VRM heatsink fan RPM 558. Chipset fan RPM 569. Readings from the "Water flow meter" header (RPM) 5710. Readings from the "Water In" and "Water Out" temperature headers 5811. CPU current 5912. CPU core voltage 60 61Sensor values are read from EC registers, and to avoid race with the board 62firmware the driver acquires ACPI mutex, the one used by the WMI when its 63methods access the EC. 64 65Module Parameters 66----------------- 67 * mutex_path: string 68 The driver holds path to the ACPI mutex for each board (actually, 69 the path is mostly identical for them). If ASUS changes this path 70 in a future BIOS update, this parameter can be used to override 71 the stored in the driver value until it gets updated. 72 A special string ":GLOBAL_LOCK" can be passed to use the ACPI 73 global lock instead of a dedicated mutex. 74