| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | Kernel driver raspberrypi-hwmon |
| 2 | =============================== |
| 3 | |
| 4 | Supported 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 | |
| 11 | Author: Stefan Wahren <stefan.wahren@i2se.com> |
| 12 | |
| 13 | Description |
| 14 | ----------- |
| 15 | |
| 16 | This driver periodically polls a mailbox property of the VC4 firmware to detect |
| 17 | undervoltage conditions. |
| 18 | |
| 19 | Sysfs entries |
| 20 | ------------- |
| 21 | |
| 22 | in0_lcrit_alarm Undervoltage alarm |