.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver isl28022
======================
Supported chips:
* Renesas ISL28022
Prefix: 'isl28022'
Addresses scanned: none
Datasheet: Publicly available at the Renesas website
https://www.renesas.com/us/en/www/doc/datasheet/isl28022.pdf
Author:
Carsten Spieß <mail@carsten-spiess.de>
Description
-----------
The ISL28022 is a power monitor with I2C interface. The device monitors
voltage, current via shunt resistor and calculated power.
Usage Notes
-----------
This driver does not auto-detect devices. You will have to instantiate the
device explicitly. Please see Documentation/i2c/instantiating-devices.rst for
details.
The shunt value in micro-ohms, shunt voltage range and averaging can be set
with device properties.
Please refer to the Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml
for bindings if the device tree is used.
The driver supports only shunt and bus continuous ADC mode at 15bit resolution.
Averaging can be set from 1 to 128 samples (power of 2) on both channels.
Shunt voltage range of 40, 80, 160 or 320mV is allowed
The bus voltage range is 60V fixed.
Sysfs entries
-------------
The following attributes are supported. All attributes are read-only.
======================= =======================================================
in0_input bus voltage (milli Volt)
in1_input shunt voltage (milli Volt)
curr1_input current (milli Ampere)
power1_input power (micro Watt)
======================= =======================================================
Debugfs entries
---------------
The following attributes are supported. All attributes are read-only.
======================= =======================================================
shunt_voltage shunt voltage (micro Volt)
======================= =======================================================
