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Documentation/hwmon/max34440 3.12 KB
e428d8d3b   Guenter Roeck   hwmon: (max34440)...
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  Kernel driver max34440
  ======================
  
  Supported chips:
    * Maxim MAX34440
      Prefixes: 'max34440'
      Addresses scanned: -
      Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
    * Maxim MAX34441
      PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
      Prefixes: 'max34441'
      Addresses scanned: -
      Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
  
  Author: Guenter Roeck <guenter.roeck@ericsson.com>
  
  
  Description
  -----------
  
  This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
  Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
  and Intelligent Fan Controller.
  
  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.
  
  
  Platform data support
  ---------------------
  
  The driver supports standard PMBus driver platform data.
  
  
  Sysfs entries
  -------------
  
  The following attributes are supported. Limits are read-write; all other
  attributes are read-only.
  
  in[1-6]_label		"vout[1-6]".
  in[1-6]_input		Measured voltage. From READ_VOUT register.
  in[1-6]_min		Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
  in[1-6]_max		Maximum voltage. From VOUT_OV_WARN_LIMIT register.
  in[1-6]_lcrit		Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register.
  in[1-6]_crit		Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
  in[1-6]_min_alarm	Voltage low alarm. From VOLTAGE_UV_WARNING status.
  in[1-6]_max_alarm	Voltage high alarm. From VOLTAGE_OV_WARNING status.
  in[1-6]_lcrit_alarm	Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
  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.
  in[1-6]_reset_history	Write any value to reset history.
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  curr[1-6]_label		"iout[1-6]".
  curr[1-6]_input		Measured current. From READ_IOUT register.
  curr[1-6]_max		Maximum current. From IOUT_OC_WARN_LIMIT register.
  curr[1-6]_crit		Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
  curr[1-6]_max_alarm	Current high alarm. From IOUT_OC_WARNING status.
  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.
  curr[1-6]_reset_history	Write any value to reset history.
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  			in6 and curr6 attributes only exist for MAX34440.
  
  temp[1-8]_input		Measured temperatures. From READ_TEMPERATURE_1 register.
  			temp1 is the chip's internal temperature. temp2..temp5
  			are remote I2C temperature sensors. For MAX34441, temp6
  			is a remote thermal-diode sensor. For MAX34440, temp6..8
  			are remote I2C temperature sensors.
  temp[1-8]_max		Maximum temperature. From OT_WARN_LIMIT register.
  temp[1-8]_crit		Critical high temperature. From OT_FAULT_LIMIT register.
  temp[1-8]_max_alarm	Temperature high alarm.
  temp[1-8]_crit_alarm	Temperature critical high alarm.
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  temp[1-8]_highest	Historical maximum temperature.
  temp[1-8]_reset_history	Write any value to reset history.
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  			temp7 and temp8 attributes only exist for MAX34440.