projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 74d1e007 SW |
1 | Kernel driver raspberrypi-hwmon |
| 2 | =============================== | |
| 3 | ||
| 4 | Supported boards: | |
| b04f2f7d | 5 | |
| 74d1e007 SW |
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 | ||
| b04f2f7d | 23 | ======================= ================== |
| 74d1e007 | 24 | in0_lcrit_alarm Undervoltage alarm |
| b04f2f7d | 25 | ======================= ================== |