tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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kernel / Documentation / hwmon / raspberrypi-hwmon
at v4.20 22 lines 525 B view raw
1Kernel driver raspberrypi-hwmon 2=============================== 3 4Supported boards: 5 * Raspberry Pi A+ (via GPIO on SoC) 6 * Raspberry Pi B+ (via GPIO on SoC) 7 * Raspberry Pi 2 B (via GPIO on SoC) 8 * Raspberry Pi 3 B (via GPIO on port expander) 9 * Raspberry Pi 3 B+ (via PMIC) 10 11Author: Stefan Wahren <stefan.wahren@i2se.com> 12 13Description 14----------- 15 16This driver periodically polls a mailbox property of the VC4 firmware to detect 17undervoltage conditions. 18 19Sysfs entries 20------------- 21 22in0_lcrit_alarm Undervoltage alarm