70e94b276c
Add support for voltage, current, and temperature peak (historic maximum) attributes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
76 lines
2.6 KiB
Plaintext
76 lines
2.6 KiB
Plaintext
Kernel driver max8688
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=====================
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Supported chips:
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* Maxim MAX8688
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Prefix: 'max8688'
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Addresses scanned: -
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.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 Maxim MAX8688 Digital Power-Supply
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Controller/Monitor with 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.
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Sysfs entries
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-------------
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The following attributes are supported. Limits are read-write; all other
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attributes are read-only.
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in1_label "vout1"
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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_lcrit Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register.
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in1_crit Critical maximum voltage. From VOUT_OV_FAULT_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_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
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in1_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT 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_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
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curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register.
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curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
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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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temp1_input Measured temperature. From READ_TEMPERATURE_1 register.
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temp1_max Maximum temperature. From OT_WARN_LIMIT register.
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temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
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temp1_max_alarm Chip temperature high alarm. Set by comparing
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READ_TEMPERATURE_1 with OT_WARN_LIMIT if TEMP_OT_WARNING
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status is set.
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temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
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READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT
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status is set.
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temp1_highest Historical maximum temperature.
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temp1_reset_history Write any value to reset history.
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