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