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======================= ================== 26