1.. SPDX-License-Identifier: GPL-2.0-only
2
3Kernel driver ina238
4====================
5
6Supported 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
17Author: Nathan Rossi <nathan.rossi@digi.com>
18
19Description
20-----------
21
22The INA238 is a current shunt, power and temperature monitor with an I2C
23interface. It includes a number of programmable functions including alerts,
24conversion rate, sample averaging and selectable shunt voltage accuracy.
25
26The shunt value in micro-ohms can be set via platform data or device tree at
27compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
28refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
29if the device tree is used.
30
31Sysfs entries
32-------------
33
34======================= =======================================================
35in0_input		Shunt voltage (mV)
36in0_min			Minimum shunt voltage threshold (mV)
37in0_min_alarm		Minimum shunt voltage alarm
38in0_max			Maximum shunt voltage threshold (mV)
39in0_max_alarm		Maximum shunt voltage alarm
40
41in1_input		Bus voltage (mV)
42in1_min			Minimum bus voltage threshold (mV)
43in1_min_alarm		Minimum shunt voltage alarm
44in1_max			Maximum bus voltage threshold (mV)
45in1_max_alarm		Maximum shunt voltage alarm
46
47power1_input		Power measurement (uW)
48power1_max		Maximum power threshold (uW)
49power1_max_alarm	Maximum power alarm
50
51curr1_input		Current measurement (mA)
52
53temp1_input		Die temperature measurement (mC)
54temp1_max		Maximum die temperature threshold (mC)
55temp1_max_alarm		Maximum die temperature alarm
56======================= =======================================================
57