summaryrefslogtreecommitdiffstats
path: root/Documentation/hwmon/raspberrypi-hwmon
blob: 3c92e2cb52d6068fa4fa65254a827bec77c6c667 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
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
OpenPOWER on IntegriCloud