Kernel driver max8688

Supported chips:

Author: Guenter Roeck <linux@roeck-us.net>

Description

This driver supports hardware monitoring for Maxim MAX8688 Digital Power-Supply Controller/Monitor with PMBus Interface.

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.

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.

in1_label

“vout1”

in1_input

Measured voltage. From READ_VOUT register.

in1_min

Minimum Voltage. From VOUT_UV_WARN_LIMIT register.

in1_max

Maximum voltage. From VOUT_OV_WARN_LIMIT register.

in1_lcrit

Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.

in1_crit

Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.

in1_min_alarm

Voltage low alarm. From VOLTAGE_UV_WARNING status.

in1_max_alarm

Voltage high alarm. From VOLTAGE_OV_WARNING status.

in1_lcrit_alarm

Voltage critical low alarm. From VOLTAGE_UV_FAULT status.

in1_crit_alarm

Voltage critical high alarm. From VOLTAGE_OV_FAULT status.

in1_highest

Historical maximum voltage.

in1_reset_history

Write any value to reset history.

curr1_label

“iout1”

curr1_input

Measured current. From READ_IOUT register.

curr1_max

Maximum current. From IOUT_OC_WARN_LIMIT register.

curr1_crit

Critical maximum current. From IOUT_OC_FAULT_LIMIT register.

curr1_max_alarm

Current high alarm. From IOUT_OC_WARN_LIMIT register.

curr1_crit_alarm

Current critical high alarm. From IOUT_OC_FAULT status.

curr1_highest

Historical maximum current.

curr1_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.