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diff --git a/Documentation/hwmon/isl28022.rst b/Documentation/hwmon/isl28022.rst new file mode 100644 index 000000000000..8d4422a2dacd --- /dev/null +++ b/Documentation/hwmon/isl28022.rst @@ -0,0 +1,63 @@ +.. 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/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) +======================= ======================================================= |