AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-28 11:18:45 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
22be0c6cec
linux_dsm_epyc7002/Documentation/hwmon/raspberrypi-hwmon

23 lines
525 B
Plaintext
Raw Normal View History

hwmon: Add support for RPi voltage sensor Currently there is no easy way to detect undervoltage conditions on a remote Raspberry Pi. This hwmon driver retrieves the state of the undervoltage sensor via mailbox interface. The handling based on Noralf's modifications to the downstream firmware driver. In case of an undervoltage condition only an entry is written to the kernel log. CC: "Noralf Trønnes" <noralf@tronnes.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Guenter Roeck <linux@roeck-us.net>
2018-05-26 02:24:35 +07:00
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 <stefan.wahren@i2se.com>
Description
-----------
This driver periodically polls a mailbox property of the VC4 firmware to detect
undervoltage conditions.
Sysfs entries
-------------
in0_lcrit_alarm Undervoltage alarm
Reference in New Issue Copy Permalink