Kernel driver ina238

Supported chips:

Author: Nathan Rossi <nathan.rossi@digi.com>

Description

The INA238 is a current shunt, power and temperature monitor with an I2C interface. It includes a number of programmable functions including alerts, conversion rate, sample averaging and selectable shunt voltage accuracy.

The shunt value in micro-ohms can be set via platform data or device tree at compile-time or via the shunt_resistor attribute in sysfs at run-time. Please refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings if the device tree is used.

Sysfs entries

in0_input

Shunt voltage (mV)

in0_min

Minimum shunt voltage threshold (mV)

in0_min_alarm

Minimum shunt voltage alarm

in0_max

Maximum shunt voltage threshold (mV)

in0_max_alarm

Maximum shunt voltage alarm

in1_input

Bus voltage (mV)

in1_min

Minimum bus voltage threshold (mV)

in1_min_alarm

Minimum shunt voltage alarm

in1_max

Maximum bus voltage threshold (mV)

in1_max_alarm

Maximum shunt voltage alarm

power1_input

Power measurement (uW)

power1_max

Maximum power threshold (uW)

power1_max_alarm

Maximum power alarm

curr1_input

Current measurement (mA)

temp1_input

Die temperature measurement (mC)

temp1_max

Maximum die temperature threshold (mC)

temp1_max_alarm

Maximum die temperature alarm