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