Kernel driver lm25066

Supported chips:

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

Description

This driver supports hardware monitoring for National Semiconductor / TI LM25056, LM25066, LM5064, and LM5066/LM5066I Power Management, Monitoring, Control, and Protection ICs.

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.

The shunt (sense) resistor value can be configured by a device tree property; see Documentation/devicetree/bindings/hwmon/pmbus/ti,lm25066.yaml 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

"vin"

in1_input

Measured input voltage.

in1_average

Average measured input voltage.

in1_min

Minimum input voltage.

in1_max

Maximum input voltage.

in1_min_alarm

Input voltage low alarm.

in1_max_alarm

Input voltage high alarm.

in2_label

"vmon"

in2_input

Measured voltage on VAUX pin

in2_min

Minimum VAUX voltage (LM25056 only).

in2_max

Maximum VAUX voltage (LM25056 only).

in2_min_alarm

VAUX voltage low alarm (LM25056 only).

in2_max_alarm

VAUX voltage high alarm (LM25056 only).

in3_label

"vout1" Not supported on LM25056.

in3_input

Measured output voltage.

in3_average

Average measured output voltage.

in3_min

Minimum output voltage.

in3_min_alarm

Output voltage low alarm.

curr1_label

"iin"

curr1_input

Measured input current.

curr1_average

Average measured input current.

curr1_max

Maximum input current.

curr1_max_alarm

Input current high alarm.

power1_label

"pin"

power1_input

Measured input power.

power1_average

Average measured input power.

power1_max

Maximum input power limit.

power1_alarm

Input power alarm

power1_input_highest

Historical maximum power.

power1_reset_history

Write any value to reset maximum power history.

temp1_input

Measured temperature.

temp1_max

Maximum temperature.

temp1_crit

Critical high temperature.

temp1_max_alarm

Chip temperature high alarm.

temp1_crit_alarm

Chip temperature critical high alarm.