Kernel driver bel-pfe

Supported chips:

Author: Tao Ren <rentao.bupt@gmail.com>

Description

This driver supports hardware monitoring for below power supply devices which support PMBus Protocol:

  • BEL PFE1100

    1100 Watt AC to DC power-factor-corrected (PFC) power supply. PMBus Communication Manual is not publicly available.

  • BEL PFE3000

    3000 Watt AC/DC power-factor-corrected (PFC) and DC-DC power supply. PMBus Communication Manual is not publicly available.

The driver is a client driver to the core PMBus driver. Please see Documentation/hwmon/pmbus.rst for details on PMBus client drivers.

Usage Notes

This driver does not auto-detect devices. You will have to instantiate the devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for details.

Example: the following will load the driver for an PFE3000 at address 0x20 on I2C bus #1:

$ modprobe bel-pfe
$ echo pfe3000 0x20 > /sys/bus/i2c/devices/i2c-1/new_device

Platform data support

The driver supports standard PMBus driver platform data.

Sysfs entries

curr1_label

“iin”

curr1_input

Measured input current

curr1_max

Input current max value

curr1_max_alarm

Input current max alarm

curr[2-3]_label

“iout[1-2]”

curr[2-3]_input

Measured output current

curr[2-3]_max

Output current max value

curr[2-3]_max_alarm

Output current max alarm

fan[1-2]_input

Fan 1 and 2 speed in RPM

fan1_target

Set fan speed reference for both fans

in1_label

“vin”

in1_input

Measured input voltage

in1_crit

Input voltage critical max value

in1_crit_alarm

Input voltage critical max alarm

in1_lcrit

Input voltage critical min value

in1_lcrit_alarm

Input voltage critical min alarm

in1_max

Input voltage max value

in1_max_alarm

Input voltage max alarm

in2_label

“vcap”

in2_input

Hold up capacitor voltage

in[3-8]_label

“vout[1-3,5-7]”

in[3-8]_input

Measured output voltage

in[3-4]_alarm

vout[1-2] output voltage alarm

power[1-2]_label

“pin[1-2]”

power[1-2]_input

Measured input power

power[1-2]_alarm

Input power high alarm

power[3-4]_label

“pout[1-2]”

power[3-4]_input

Measured output power

temp[1-3]_input

Measured temperature

temp[1-3]_alarm

Temperature alarm

Note

  • curr3, fan2, vout[2-7], vcap, pin2, pout2 and temp3 attributes only exist for PFE3000.