Documentation/hwmon/ina238.rst
.. SPDX-License-Identifier: GPL-2.0-only
Supported chips:
Texas Instruments INA238
Prefix: 'ina238'
Addresses: I2C 0x40 - 0x4f
Datasheet: https://www.ti.com/lit/gpn/ina238
Author: Nathan Rossi [email protected]
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.
======================= ======================================================= 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 ======================= =======================================================