mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 16:56:26 +00:00
eacb52f010
The INA238 is a I2C power monitor similar to other INA2xx devices, providing shunt voltage, bus voltage, current, power and temperature measurements. Signed-off-by: Nathan Rossi <nathan.rossi@digi.com> Link: https://lore.kernel.org/r/20211102052754.817220-3-nathan@nathanrossi.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
57 lines
1.7 KiB
ReStructuredText
57 lines
1.7 KiB
ReStructuredText
.. 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
|
|
======================= =======================================================
|