93 lines
2.9 KiB
Plaintext
93 lines
2.9 KiB
Plaintext
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Kernel driver adm1275
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=====================
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Supported chips:
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* Analog Devices ADM1075
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Prefix: 'adm1075'
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Addresses scanned: -
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf
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* Analog Devices ADM1275
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Prefix: 'adm1275'
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Addresses scanned: -
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf
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* Analog Devices ADM1276
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Prefix: 'adm1276'
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Addresses scanned: -
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf
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Author: Guenter Roeck <guenter.roeck@ericsson.com>
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Description
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-----------
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This driver supports hardware montoring for Analog Devices ADM1075, ADM1275,
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and ADM1276 Hot-Swap Controller and Digital Power Monitor.
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ADM1075, ADM1275, and ADM1276 are hot-swap controllers that allow a circuit
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board to be removed from or inserted into a live backplane. They also feature
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current and voltage readback via an integrated 12-bit analog-to-digital
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converter (ADC), accessed using a PMBus interface.
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The driver is a client driver to the core PMBus driver. Please see
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Documentation/hwmon/pmbus for details on PMBus client drivers.
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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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devices explicitly. Please see Documentation/i2c/instantiating-devices for
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details.
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The ADM1075, unlike many other PMBus devices, does not support internal voltage
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or current scaling. Reported voltages, currents, and power are raw measurements,
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and will typically have to be scaled.
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Platform data support
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---------------------
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The driver supports standard PMBus driver platform data. Please see
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Documentation/hwmon/pmbus for details.
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Sysfs entries
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-------------
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The following attributes are supported. Limits are read-write, history reset
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attributes are write-only, all other attributes are read-only.
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in1_label "vin1" or "vout1" depending on chip variant and
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configuration. On ADM1075, vout1 reports the voltage on
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the VAUX pin.
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in1_input Measured voltage.
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in1_min Minimum Voltage.
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in1_max Maximum voltage.
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in1_min_alarm Voltage low alarm.
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in1_max_alarm Voltage high alarm.
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in1_highest Historical maximum voltage.
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in1_reset_history Write any value to reset history.
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curr1_label "iout1"
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curr1_input Measured current.
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curr1_max Maximum current.
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curr1_max_alarm Current high alarm.
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curr1_lcrit Critical minimum current. Depending on the chip
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configuration, either curr1_lcrit or curr1_crit is
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supported, but not both.
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curr1_lcrit_alarm Critical current low alarm.
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curr1_crit Critical maximum current. Depending on the chip
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configuration, either curr1_lcrit or curr1_crit is
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supported, but not both.
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curr1_crit_alarm Critical current high alarm.
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curr1_highest Historical maximum current.
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curr1_reset_history Write any value to reset history.
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power1_label "pin1"
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power1_input Input power.
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power1_reset_history Write any value to reset history.
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Power attributes are supported on ADM1075 and ADM1276
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only.
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