linux/Documentation/hwmon/tps40422
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   1Kernel driver tps40422
   2======================
   3
   4Supported chips:
   5  * TI TPS40422
   6    Prefix: 'tps40422'
   7    Addresses scanned: -
   8    Datasheet: http://www.ti.com/lit/gpn/tps40422
   9
  10Author: Zhu Laiwen <richard.zhu@nsn.com>
  11
  12
  13Description
  14-----------
  15
  16This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
  17Controller with PMBus
  18
  19The driver is a client driver to the core PMBus driver.
  20Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
  21
  22
  23Usage Notes
  24-----------
  25
  26This driver does not auto-detect devices. You will have to instantiate the
  27devices explicitly. Please see Documentation/i2c/instantiating-devices for
  28details.
  29
  30
  31Platform data support
  32---------------------
  33
  34The driver supports standard PMBus driver platform data.
  35
  36
  37Sysfs entries
  38-------------
  39
  40The following attributes are supported.
  41
  42in[1-2]_label           "vout[1-2]"
  43in[1-2]_input           Measured voltage. From READ_VOUT register.
  44in[1-2]_alarm           voltage alarm.
  45
  46curr[1-2]_input         Measured current. From READ_IOUT register.
  47curr[1-2]_label         "iout[1-2]"
  48curr1_max               Maximum current. From IOUT_OC_WARN_LIMIT register.
  49curr1_crit              Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
  50curr1_max_alarm         Current high alarm. From IOUT_OC_WARN_LIMIT status.
  51curr1_crit_alarm        Current critical high alarm. From IOUT_OC_FAULT status.
  52curr2_alarm             Current high alarm. From IOUT_OC_WARNING status.
  53
  54temp1_input             Measured temperature. From READ_TEMPERATURE_2 register on page 0.
  55temp1_max               Maximum temperature. From OT_WARN_LIMIT register.
  56temp1_crit              Critical high temperature. From OT_FAULT_LIMIT register.
  57temp1_max_alarm         Chip temperature high alarm. Set by comparing
  58                        READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING
  59                        status is set.
  60temp1_crit_alarm        Chip temperature critical high alarm. Set by comparing
  61                        READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT
  62                        status is set.
  63temp2_input             Measured temperature. From READ_TEMPERATURE_2 register on page 1.
  64temp2_alarm             Chip temperature alarm on page 1.
  65