projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| eacb52f0 NR |
1 | .. SPDX-License-Identifier: GPL-2.0-only |
| 2 | ||
| 3 | Kernel driver ina238 | |
| 4 | ==================== | |
| 5 | ||
| 6 | Supported chips: | |
| 7 | ||
| 8 | * Texas Instruments INA238 | |
| 9 | ||
| 10 | Prefix: 'ina238' | |
| 11 | ||
| 12 | Addresses: I2C 0x40 - 0x4f | |
| 13 | ||
| 14 | Datasheet: | |
| 15 | https://www.ti.com/lit/gpn/ina238 | |
| 16 | ||
| 17 | Author: Nathan Rossi <nathan.rossi@digi.com> | |
| 18 | ||
| 19 | Description | |
| 20 | ----------- | |
| 21 | ||
| 22 | The INA238 is a current shunt, power and temperature monitor with an I2C | |
| 23 | interface. It includes a number of programmable functions including alerts, | |
| 24 | conversion rate, sample averaging and selectable shunt voltage accuracy. | |
| 25 | ||
| 26 | The shunt value in micro-ohms can be set via platform data or device tree at | |
| 27 | compile-time or via the shunt_resistor attribute in sysfs at run-time. Please | |
| 28 | refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings | |
| 29 | if the device tree is used. | |
| 30 | ||
| 31 | Sysfs entries | |
| 32 | ------------- | |
| 33 | ||
| 34 | ======================= ======================================================= | |
| 35 | in0_input Shunt voltage (mV) | |
| 36 | in0_min Minimum shunt voltage threshold (mV) | |
| 37 | in0_min_alarm Minimum shunt voltage alarm | |
| 38 | in0_max Maximum shunt voltage threshold (mV) | |
| 39 | in0_max_alarm Maximum shunt voltage alarm | |
| 40 | ||
| 41 | in1_input Bus voltage (mV) | |
| 42 | in1_min Minimum bus voltage threshold (mV) | |
| 43 | in1_min_alarm Minimum shunt voltage alarm | |
| 44 | in1_max Maximum bus voltage threshold (mV) | |
| 45 | in1_max_alarm Maximum shunt voltage alarm | |
| 46 | ||
| 47 | power1_input Power measurement (uW) | |
| 48 | power1_max Maximum power threshold (uW) | |
| 49 | power1_max_alarm Maximum power alarm | |
| 50 | ||
| 51 | curr1_input Current measurement (mA) | |
| 52 | ||
| 53 | temp1_input Die temperature measurement (mC) | |
| 54 | temp1_max Maximum die temperature threshold (mC) | |
| 55 | temp1_max_alarm Maximum die temperature alarm | |
| 56 | ======================= ======================================================= |