| .. SPDX-License-Identifier: GPL-2.0-only |
| |
| Kernel driver ina238 |
| ==================== |
| |
| Supported chips: |
| |
| * Texas Instruments INA238 |
| |
| Prefix: 'ina238' |
| |
| Addresses: I2C 0x40 - 0x4f |
| |
| Datasheet: |
| https://www.ti.com/lit/gpn/ina238 |
| |
| 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 |
| ======================= ======================================================= |
