Kernel driver corsair-psu

Supported devices:

  • Corsair Power Supplies

    Corsair HX550i

    Corsair HX650i

    Corsair HX750i

    Corsair HX850i

    Corsair HX1000i (Series 2022 and 2023)

    Corsair HX1200i

    Corsair HX1500i (Series 2022 and 2023)

    Corsair RM550i

    Corsair RM650i

    Corsair RM750i

    Corsair RM850i

    Corsair RM1000i

Author: Wilken Gottwalt

Description

This driver implements the sysfs interface for the Corsair PSUs with a HID protocol interface of the HXi and RMi series. These power supplies provide access to a micro-controller with 2 attached temperature sensors, 1 fan rpm sensor, 4 sensors for volt levels, 4 sensors for power usage and 4 sensors for current levels and additional non-sensor information like uptimes.

Sysfs entries

curr1_input

Total current usage

curr2_input

Current on the 12v psu rail

curr2_crit

Current max critical value on the 12v psu rail

curr3_input

Current on the 5v psu rail

curr3_crit

Current max critical value on the 5v psu rail

curr4_input

Current on the 3.3v psu rail

curr4_crit

Current max critical value on the 3.3v psu rail

fan1_input

RPM of psu fan

in0_input

Voltage of the psu ac input

in1_input

Voltage of the 12v psu rail

in1_crit

Voltage max critical value on the 12v psu rail

in1_lcrit

Voltage min critical value on the 12v psu rail

in2_input

Voltage of the 5v psu rail

in2_crit

Voltage max critical value on the 5v psu rail

in2_lcrit

Voltage min critical value on the 5v psu rail

in3_input

Voltage of the 3.3v psu rail

in3_crit

Voltage max critical value on the 3.3v psu rail

in3_lcrit

Voltage min critical value on the 3.3v psu rail

power1_input

Total power usage

power2_input

Power usage of the 12v psu rail

power3_input

Power usage of the 5v psu rail

power4_input

Power usage of the 3.3v psu rail

pwm1

PWM value, read only

pwm1_enable

PWM mode, read only

temp1_input

Temperature of the psu vrm component

temp1_crit

Temperature max cirtical value of the psu vrm component

temp2_input

Temperature of the psu case

temp2_crit

Temperature max critical value of psu case

Usage Notes

It is an USB HID device, so it is auto-detected, supports hot-swapping and several devices at once.

Flickering values in the rail voltage levels can be an indicator for a failing PSU. Accordingly to the default automatic fan speed plan the fan starts at about 30% of the wattage rating. If this does not happen, a fan failure is likely. The driver also provides some additional useful values via debugfs, which do not fit into the hwmon class.

Debugfs entries

ocpmode

Single or multi rail mode of the PCIe power connectors

product

Product name of the psu

uptime

Session uptime of the psu

uptime_total

Total uptime of the psu

vendor

Vendor name of the psu