Documentation/hwmon/max34440

   1 Kernel driver max34440
   2 ======================
   3
   4 Supported chips:
   5   * Maxim MAX34440
   6     Prefixes: 'max34440'
   7     Addresses scanned: -
   8     Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
   9   * Maxim MAX34441
  10     PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
  11     Prefixes: 'max34441'
  12     Addresses scanned: -
  13     Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
  14
  15 Author: Guenter Roeck <guenter.roeck@ericsson.com>
  16
  17
  18 Description
  19 -----------
  20
  21 This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
  22 Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
  23 and Intelligent Fan Controller.
  24
  25 The driver is a client driver to the core PMBus driver. Please see
  26 Documentation/hwmon/pmbus for details on PMBus client drivers.
  27
  28
  29 Usage Notes
  30 -----------
  31
  32 This driver does not auto-detect devices. You will have to instantiate the
  33 devices explicitly. Please see Documentation/i2c/instantiating-devices for
  34 details.
  35
  36
  37 Platform data support
  38 ---------------------
  39
  40 The driver supports standard PMBus driver platform data.
  41
  42
  43 Sysfs entries
  44 -------------
  45
  46 The following attributes are supported. Limits are read-write; all other
  47 attributes are read-only.
  48
  49 in[1-6]_label           "vout[1-6]".
  50 in[1-6]_input           Measured voltage. From READ_VOUT register.
  51 in[1-6]_min             Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
  52 in[1-6]_max             Maximum voltage. From VOUT_OV_WARN_LIMIT register.
  53 in[1-6]_lcrit           Critical minumum Voltage. VOUT_UV_FAULT_LIMIT register.
  54 in[1-6]_crit            Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
  55 in[1-6]_min_alarm       Voltage low alarm. From VOLTAGE_UV_WARNING status.
  56 in[1-6]_max_alarm       Voltage high alarm. From VOLTAGE_OV_WARNING status.
  57 in[1-6]_lcrit_alarm     Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
  58 in[1-6]_crit_alarm      Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
  59 in[1-6]_highest         Historical maximum voltage.
  60 in[1-6]_reset_history   Write any value to reset history.
  61
  62 curr[1-6]_label         "iout[1-6]".
  63 curr[1-6]_input         Measured current. From READ_IOUT register.
  64 curr[1-6]_max           Maximum current. From IOUT_OC_WARN_LIMIT register.
  65 curr[1-6]_crit          Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
  66 curr[1-6]_max_alarm     Current high alarm. From IOUT_OC_WARNING status.
  67 curr[1-6]_crit_alarm    Current critical high alarm. From IOUT_OC_FAULT status.
  68 curr[1-6]_highest       Historical maximum current.
  69 curr[1-6]_reset_history Write any value to reset history.
  70
  71                         in6 and curr6 attributes only exist for MAX34440.
  72
  73 temp[1-8]_input         Measured temperatures. From READ_TEMPERATURE_1 register.
  74                         temp1 is the chip's internal temperature. temp2..temp5
  75                         are remote I2C temperature sensors. For MAX34441, temp6
  76                         is a remote thermal-diode sensor. For MAX34440, temp6..8
  77                         are remote I2C temperature sensors.
  78 temp[1-8]_max           Maximum temperature. From OT_WARN_LIMIT register.
  79 temp[1-8]_crit          Critical high temperature. From OT_FAULT_LIMIT register.
  80 temp[1-8]_max_alarm     Temperature high alarm.
  81 temp[1-8]_crit_alarm    Temperature critical high alarm.
  82 temp[1-8]_highest       Historical maximum temperature.
  83 temp[1-8]_reset_history Write any value to reset history.
  84
  85                         temp7 and temp8 attributes only exist for MAX34440.