Kernel driver max16064

Supported chips:

Author: Guenter Roeck <>


This driver supports hardware monitoring for Maxim MAX16064 Quad Power-Supply Controller with Active-Voltage Output Control and PMBus Interface.

The driver is a client driver to the core PMBus driver. Please see Kernel driver pmbus 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 How to instantiate I2C devices for details.

Platform data support

The driver supports standard PMBus driver platform data.

Sysfs entries

The following attributes are supported. Limits are read-write; all other attributes are read-only.

in[1-4]_label “vout[1-4]”
in[1-4]_input Measured voltage. From READ_VOUT register.
in[1-4]_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
in[1-4]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
in[1-4]_lcrit Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
in[1-4]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
in[1-4]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
in[1-4]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
in[1-4]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
in[1-4]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
in[1-4]_highest Historical maximum voltage.
in[1-4]_reset_history Write any value to reset history.
temp1_input Measured temperature. From READ_TEMPERATURE_1 register.
temp1_max Maximum temperature. From OT_WARN_LIMIT register.
temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
temp1_max_alarm Chip temperature high alarm. Set by comparing READ_TEMPERATURE_1 with OT_WARN_LIMIT if TEMP_OT_WARNING status is set.
temp1_crit_alarm Chip temperature critical high alarm. Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT status is set.
temp1_highest Historical maximum temperature.
temp1_reset_history Write any value to reset history.