98591dbe63
Add support for voltage, current, and temperature peak (historic maximum) attributes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
86 lines
3.1 KiB
Plaintext
86 lines
3.1 KiB
Plaintext
Kernel driver max34440
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======================
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Supported chips:
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* Maxim MAX34440
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Prefixes: 'max34440'
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Addresses scanned: -
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
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* Maxim MAX34441
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PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
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Prefixes: 'max34441'
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Addresses scanned: -
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.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 MAX34440 PMBus 6-Channel
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Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
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and Intelligent Fan Controller.
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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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in[1-6]_label "vout[1-6]".
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in[1-6]_input Measured voltage. From READ_VOUT register.
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in[1-6]_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
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in[1-6]_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
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in[1-6]_lcrit Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register.
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in[1-6]_crit Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
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in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
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in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
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in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
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in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
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in[1-6]_highest Historical maximum voltage.
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in[1-6]_reset_history Write any value to reset history.
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curr[1-6]_label "iout[1-6]".
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curr[1-6]_input Measured current. From READ_IOUT register.
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curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
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curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
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curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
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curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
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curr[1-6]_highest Historical maximum current.
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curr[1-6]_reset_history Write any value to reset history.
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in6 and curr6 attributes only exist for MAX34440.
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temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
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temp1 is the chip's internal temperature. temp2..temp5
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are remote I2C temperature sensors. For MAX34441, temp6
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is a remote thermal-diode sensor. For MAX34440, temp6..8
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are remote I2C temperature sensors.
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temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
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temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
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temp[1-8]_max_alarm Temperature high alarm.
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temp[1-8]_crit_alarm Temperature critical high alarm.
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temp[1-8]_highest Historical maximum temperature.
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temp[1-8]_reset_history Write any value to reset history.
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temp7 and temp8 attributes only exist for MAX34440.
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