Kernel driver raspberrypi-hwmon

Supported boards:

• Raspberry Pi A+ (via GPIO on SoC)
• Raspberry Pi B+ (via GPIO on SoC)
• Raspberry Pi 2 B (via GPIO on SoC)
• Raspberry Pi 3 B (via GPIO on port expander)
• Raspberry Pi 3 B+ (via PMIC)

Author: Stefan Wahren [email protected]

Description

This driver periodically polls a mailbox property of the VC4 firmware to detect undervoltage conditions.

Sysfs entries

======================= ================== in0_lcrit_alarm Undervoltage alarm ======================= ==================