.. 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 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/isl,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) 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) ======================= =======================================================