c576e30cd0
Add support for voltage and current peak (historic maximum) attributes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
65 lines
2.0 KiB
Plaintext
65 lines
2.0 KiB
Plaintext
Kernel driver adm1275
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=====================
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Supported chips:
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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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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 ADM1275 Hot-Swap
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Controller and Digital Power Monitor.
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The ADM1275 is a hot-swap controller that allows a circuit board to be removed
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from or inserted into a live backplane. It also features current and voltage
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readback via an integrated 12-bit analog-to-digital converter (ADC), accessed
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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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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.
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in1_input Measured voltage. From READ_VOUT register.
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in1_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
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in1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
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in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
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in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
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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. From READ_IOUT register.
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curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
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curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register.
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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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