From 0314c6ac9e98d7551554fe422128726cd2849a8e Mon Sep 17 00:00:00 2001 From: Eugene Shalygin Date: Mon, 24 Jan 2022 02:56:44 +0100 Subject: hwmon: (asus-ec-sensors) update documentation Signed-off-by: Eugene Shalygin Link: https://lore.kernel.org/r/20220124015658.687309-3-eugene.shalygin@gmail.com Tested-by: Oleksandr Natalenko Tested-by: Denis Pauk [groeck: update index.rst, do not drop asus_wmi_ec_sensors.rst] Signed-off-by: Guenter Roeck --- Documentation/hwmon/asus_ec_sensors.rst | 52 +++++++++++++++++++++++++++++++++ Documentation/hwmon/index.rst | 1 + 2 files changed, 53 insertions(+) create mode 100644 Documentation/hwmon/asus_ec_sensors.rst (limited to 'Documentation/hwmon') diff --git a/Documentation/hwmon/asus_ec_sensors.rst b/Documentation/hwmon/asus_ec_sensors.rst new file mode 100644 index 000000000000..b12ac7ebeb1a --- /dev/null +++ b/Documentation/hwmon/asus_ec_sensors.rst @@ -0,0 +1,52 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver asus_ec_sensors +================================= + +Supported boards: + * PRIME X570-PRO, + * Pro WS X570-ACE, + * ROG CROSSHAIR VIII DARK HERO, + * ROG CROSSHAIR VIII FORMULA, + * ROG CROSSHAIR VIII HERO, + * ROG CROSSHAIR VIII IMPACT, + * ROG STRIX B550-E GAMING, + * ROG STRIX B550-I GAMING, + * ROG STRIX X570-E GAMING, + * ROG STRIX X570-F GAMING, + * ROG STRIX X570-I GAMING + +Authors: + - Eugene Shalygin + +Description: +------------ +ASUS mainboards publish hardware monitoring information via Super I/O +chip and the ACPI embedded controller (EC) registers. Some of the sensors +are only available via the EC. + +The driver is aware of and reads the following sensors: + +1. Chipset (PCH) temperature +2. CPU package temperature +3. Motherboard temperature +4. Readings from the T_Sensor header +5. VRM temperature +6. CPU_Opt fan RPM +7. VRM heatsink fan RPM +8. Chipset fan RPM +9. Readings from the "Water flow meter" header (RPM) +10. Readings from the "Water In" and "Water Out" temperature headers +11. CPU current + +Sensor values are read from EC registers, and to avoid race with the board +firmware the driver acquires ACPI mutex, the one used by the WMI when its +methods access the EC. + +Module Parameters +----------------- + * mutex_path: string + The driver holds path to the ACPI mutex for each board (actually, + the path is mostly identical for them). If ASUS changes this path + in a future BIOS update, this parameter can be used to override + the stored in the driver value until it gets updated. diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index df20022c741f..b69fdaf1af82 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -43,6 +43,7 @@ Hardware Monitoring Kernel Drivers asb100 asc7621 aspeed-pwm-tacho + asus_ec_sensors asus_wmi_ec_sensors asus_wmi_sensors bcm54140 -- cgit v1.2.3-59-g8ed1b