Documentation/hwmon/adm1275

   1 Kernel driver adm1275
   2 =====================
   3
   4 Supported chips:
   5   * Analog Devices ADM1275
   6     Prefix: 'adm1275'
   7     Addresses scanned: -
   8     Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf
   9
  10 Author: Guenter Roeck <guenter.roeck@ericsson.com>
  11
  12
  13 Description
  14 -----------
  15
  16 This driver supports hardware montoring for Analog Devices ADM1275 Hot-Swap
  17 Controller and Digital Power Monitor.
  18
  19 The ADM1275 is a hot-swap controller that allows a circuit board to be removed
  20 from or inserted into a live backplane. It also features current and voltage
  21 readback via an integrated 12-bit analog-to-digital converter (ADC), accessed
  22 using a PMBus. interface.
  23
  24 The driver is a client driver to the core PMBus driver. Please see
  25 Documentation/hwmon/pmbus for details on PMBus client drivers.
  26
  27
  28 Usage Notes
  29 -----------
  30
  31 This driver does not auto-detect devices. You will have to instantiate the
  32 devices explicitly. Please see Documentation/i2c/instantiating-devices for
  33 details.
  34
  35
  36 Platform data support
  37 ---------------------
  38
  39 The driver supports standard PMBus driver platform data. Please see
  40 Documentation/hwmon/pmbus for details.
  41
  42
  43 Sysfs entries
  44 -------------
  45
  46 The following attributes are supported. Limits are read-write, history reset
  47 attributes are write-only, all other attributes are read-only.
  48
  49 in1_label               "vin1" or "vout1" depending on chip variant and
  50                         configuration.
  51 in1_input               Measured voltage. From READ_VOUT register.
  52 in1_min                 Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
  53 in1_max                 Maximum voltage. From VOUT_OV_WARN_LIMIT register.
  54 in1_min_alarm           Voltage low alarm. From VOLTAGE_UV_WARNING status.
  55 in1_max_alarm           Voltage high alarm. From VOLTAGE_OV_WARNING status.
  56 in1_highest             Historical maximum voltage.
  57 in1_reset_history       Write any value to reset history.
  58
  59 curr1_label             "iout1"
  60 curr1_input             Measured current. From READ_IOUT register.
  61 curr1_max               Maximum current. From IOUT_OC_WARN_LIMIT register.
  62 curr1_max_alarm         Current high alarm. From IOUT_OC_WARN_LIMIT register.
  63 curr1_lcrit             Critical minimum current. Depending on the chip
  64                         configuration, either curr1_lcrit or curr1_crit is
  65                         supported, but not both.
  66 curr1_lcrit_alarm       Critical current low alarm.
  67 curr1_crit              Critical maximum current. Depending on the chip
  68                         configuration, either curr1_lcrit or curr1_crit is
  69                         supported, but not both.
  70 curr1_crit_alarm        Critical current high alarm.
  71 curr1_highest           Historical maximum current.
  72 curr1_reset_history     Write any value to reset history.