1Kernel driver raspberrypi-hwmon
 2===============================
 3
 4Supported 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
12Author: Stefan Wahren <stefan.wahren@i2se.com>
13
14Description
15-----------
16
17This driver periodically polls a mailbox property of the VC4 firmware to detect
18undervoltage conditions.
19
20Sysfs entries
21-------------
22
23======================= ==================
24in0_lcrit_alarm		Undervoltage alarm
25======================= ==================