Documentation/hwmon/raspberrypi-hwmon.rst

   1 Kernel driver raspberrypi-hwmon
   2 ===============================
   3
   4 Supported boards:
   5
   6   * Raspberry Pi A+ (via GPIO on SoC)
   7   * Raspberry Pi B+ (via GPIO on SoC)
   8   * Raspberry Pi 2 B (via GPIO on SoC)
   9   * Raspberry Pi 3 B (via GPIO on port expander)
  10   * Raspberry Pi 3 B+ (via PMIC)
  11
  12 Author: Stefan Wahren <stefan.wahren@i2se.com>
  13
  14 Description
  15 -----------
  16
  17 This driver periodically polls a mailbox property of the VC4 firmware to detect
  18 undervoltage conditions.
  19
  20 Sysfs entries
  21 -------------
  22
  23 ======================= ==================
  24 in0_lcrit_alarm         Undervoltage alarm
  25 ======================= ==================