Documentation/hwmon/max8688

   1 Kernel driver max8688
   2 =====================
   3
   4 Supported chips:
   5   * Maxim MAX8688
   6     Prefix: 'max8688'
   7     Addresses scanned: -
   8     Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.pdf
   9
  10 Author: Guenter Roeck <linux@roeck-us.net>
  11
  12
  13 Description
  14 -----------
  15
  16 This driver supports hardware monitoring for Maxim MAX8688 Digital Power-Supply
  17 Controller/Monitor with PMBus Interface.
  18
  19 The driver is a client driver to the core PMBus driver. Please see
  20 Documentation/hwmon/pmbus for details on PMBus client drivers.
  21
  22
  23 Usage Notes
  24 -----------
  25
  26 This driver does not auto-detect devices. You will have to instantiate the
  27 devices explicitly. Please see Documentation/i2c/instantiating-devices for
  28 details.
  29
  30
  31 Platform data support
  32 ---------------------
  33
  34 The driver supports standard PMBus driver platform data.
  35
  36
  37 Sysfs entries
  38 -------------
  39
  40 The following attributes are supported. Limits are read-write; all other
  41 attributes are read-only.
  42
  43 in1_label               "vout1"
  44 in1_input               Measured voltage. From READ_VOUT register.
  45 in1_min                 Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
  46 in1_max                 Maximum voltage. From VOUT_OV_WARN_LIMIT register.
  47 in1_lcrit               Critical minimum Voltage. VOUT_UV_FAULT_LIMIT register.
  48 in1_crit                Critical maximum voltage. From VOUT_OV_FAULT_LIMIT register.
  49 in1_min_alarm           Voltage low alarm. From VOLTAGE_UV_WARNING status.
  50 in1_max_alarm           Voltage high alarm. From VOLTAGE_OV_WARNING status.
  51 in1_lcrit_alarm         Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
  52 in1_crit_alarm          Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
  53 in1_highest             Historical maximum voltage.
  54 in1_reset_history       Write any value to reset history.
  55
  56 curr1_label             "iout1"
  57 curr1_input             Measured current. From READ_IOUT register.
  58 curr1_max               Maximum current. From IOUT_OC_WARN_LIMIT register.
  59 curr1_crit              Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
  60 curr1_max_alarm         Current high alarm. From IOUT_OC_WARN_LIMIT register.
  61 curr1_crit_alarm        Current critical high alarm. From IOUT_OC_FAULT status.
  62 curr1_highest           Historical maximum current.
  63 curr1_reset_history     Write any value to reset history.
  64
  65 temp1_input             Measured temperature. From READ_TEMPERATURE_1 register.
  66 temp1_max               Maximum temperature. From OT_WARN_LIMIT register.
  67 temp1_crit              Critical high temperature. From OT_FAULT_LIMIT register.
  68 temp1_max_alarm         Chip temperature high alarm. Set by comparing
  69                         READ_TEMPERATURE_1 with OT_WARN_LIMIT if TEMP_OT_WARNING
  70                         status is set.
  71 temp1_crit_alarm        Chip temperature critical high alarm. Set by comparing
  72                         READ_TEMPERATURE_1 with OT_FAULT_LIMIT if TEMP_OT_FAULT
  73                         status is set.
  74 temp1_highest           Historical maximum temperature.
  75 temp1_reset_history     Write any value to reset history.