adm1026hm —
Analog Devices ADM1026 complete thermal system management
  controller
adm1026hm* at iic0 addr 0x2e: ADM1026 hardware monitor: rev.
  0x4, step. 0x5
adm1026hm*: 8 fans, 3 temperatures, 15 voltages
The adm1026hm driver provides support for the Analog
  Devices ADM1026 hardware monitor. The chip possesses 8 fan speed sensors, 3
  temperature sensors, and 17 voltage sensors. The number of each sensor type
  configured by the driver depends on the chip configuration.
The values of the sensors are made available through the
    envstat(8) interface.
  
    | Sensor | Units | Description | 
  
    | fan
      N | RPM | Fan 0-7 | 
  
    | internal | C | Internal temperature | 
  
    | external
      N | C | External temperature 1–2 | 
  
    | Vbatt | mV DC | Battery voltage | 
  
    | V3.3
      standby | mV DC | 3.3V standby voltage | 
  
    | V3.3
      main | mV DC | 3.3V main voltage | 
  
    | V5.0 | mV DC | 5.0V supply voltage | 
  
    | V+12 | mV DC | +12V supply voltage | 
  
    | V-12 | mV DC | -12V supply voltage | 
  
    | V3.3
      N | mV DC | Analog in (3.3V reference) 0–5 | 
  
    | V2.5
      N | mV DC | Analog in (2.5V reference) 0–3 | 
It's not possible to determine if either a sensor is not connected, or the
  monitored device is producing no output. Therefore, unconnected sensors will
  show outputs of 0.
The adm1026hm driver does not support
    checking or altering limit values, interrupt output, nor the built-in
    EEPROM.