Kernel driver ir35221

Supported chips:
  • Infineon IR35221

    Prefix: ‘ir35221’

    Addresses scanned: -

    Datasheet: Datasheet is not publicly available.

Author: Samuel Mendoza-Jonas <>


IR35221 is a Digital DC-DC Multiphase Converter

Usage Notes

This driver does not probe for PMBus devices. You will have to instantiate devices explicitly.

Example: the following commands will load the driver for an IR35221 at address 0x70 on I2C bus #4:

# modprobe ir35221
# echo ir35221 0x70 > /sys/bus/i2c/devices/i2c-4/new_device

Sysfs attributes

curr1_label “iin”
curr1_input Measured input current
curr1_max Maximum current
curr1_max_alarm Current high alarm
curr[2-3]_label “iout[1-2]”
curr[2-3]_input Measured output current
curr[2-3]_crit Critical maximum current
curr[2-3]_crit_alarm Current critical high alarm
curr[2-3]_highest Highest output current
curr[2-3]_lowest Lowest output current
curr[2-3]_max Maximum current
curr[2-3]_max_alarm Current high alarm
in1_label “vin”
in1_input Measured input voltage
in1_crit Critical maximum input voltage
in1_crit_alarm Input voltage critical high alarm
in1_highest Highest input voltage
in1_lowest Lowest input voltage
in1_min Minimum input voltage
in1_min_alarm Input voltage low alarm
in[2-3]_label “vout[1-2]”
in[2-3]_input Measured output voltage
in[2-3]_lcrit Critical minimum output voltage
in[2-3]_lcrit_alarm Output voltage critical low alarm
in[2-3]_crit Critical maximum output voltage
in[2-3]_crit_alarm Output voltage critical high alarm
in[2-3]_highest Highest output voltage
in[2-3]_lowest Lowest output voltage
in[2-3]_max Maximum output voltage
in[2-3]_max_alarm Output voltage high alarm
in[2-3]_min Minimum output voltage
in[2-3]_min_alarm Output voltage low alarm
power1_label “pin”
power1_input Measured input power
power1_alarm Input power high alarm
power1_max Input power limit
power[2-3]_label “pout[1-2]”
power[2-3]_input Measured output power
power[2-3]_max Output power limit
power[2-3]_max_alarm Output power high alarm
temp[1-2]_input Measured temperature
temp[1-2]_crit Critical high temperature
temp[1-2]_crit_alarm Chip temperature critical high alarm
temp[1-2]_highest Highest temperature
temp[1-2]_lowest Lowest temperature
temp[1-2]_max Maximum temperature
temp[1-2]_max_alarm Chip temperature high alarm