linux/Documentation/hwmon/max6639
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   1Kernel driver max6639
   2=====================
   3
   4Supported chips:
   5  * Maxim MAX6639
   6    Prefix: 'max6639'
   7    Addresses scanned: I2C 0x2c, 0x2e, 0x2f
   8    Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6639.pdf
   9
  10Authors:
  11    He Changqing <hechangqing@semptian.com>
  12    Roland Stigge <stigge@antcom.de>
  13
  14Description
  15-----------
  16
  17This driver implements support for the Maxim MAX6639. This chip is a 2-channel
  18temperature monitor with dual PWM fan speed controller. It can monitor its own
  19temperature and one external diode-connected transistor or two external
  20diode-connected transistors.
  21
  22The following device attributes are implemented via sysfs:
  23
  24Attribute              R/W  Contents
  25----------------------------------------------------------------------------
  26temp1_input            R    Temperature channel 1 input (0..150 C)
  27temp2_input            R    Temperature channel 2 input (0..150 C)
  28temp1_fault            R    Temperature channel 1 diode fault
  29temp2_fault            R    Temperature channel 2 diode fault
  30temp1_max              RW   Set THERM temperature for input 1
  31                            (in C, see datasheet)
  32temp2_max              RW   Set THERM temperature for input 2
  33temp1_crit             RW   Set ALERT temperature for input 1
  34temp2_crit             RW   Set ALERT temperature for input 2
  35temp1_emergency        RW   Set OT temperature for input 1
  36                            (in C, see datasheet)
  37temp2_emergency        RW   Set OT temperature for input 2
  38pwm1                   RW   Fan 1 target duty cycle (0..255)
  39pwm2                   RW   Fan 2 target duty cycle (0..255)
  40fan1_input             R    TACH1 fan tachometer input (in RPM)
  41fan2_input             R    TACH2 fan tachometer input (in RPM)
  42fan1_fault             R    Fan 1 fault
  43fan2_fault             R    Fan 2 fault
  44temp1_max_alarm        R    Alarm on THERM temperature on channel 1
  45temp2_max_alarm        R    Alarm on THERM temperature on channel 2
  46temp1_crit_alarm       R    Alarm on ALERT temperature on channel 1
  47temp2_crit_alarm       R    Alarm on ALERT temperature on channel 2
  48temp1_emergency_alarm  R    Alarm on OT temperature on channel 1
  49temp2_emergency_alarm  R    Alarm on OT temperature on channel 2
  50
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