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 ======================= ==================
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