Supported chips:
Texas Instruments INA238
Prefix: 'ina238'
Addresses: I2C 0x40 - 0x4f
- Datasheet:
Author: Nathan Rossi <nathan.rossi@digi.com>
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 |