Based on kernel version 7.2. Page generated on 2026-08-20 08:41 EST.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | 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_input Core voltage in millivolts in1_input SDRAM controller voltage in millivolts in2_input SDRAM I/O voltage in millivolts in3_input SDRAM PHY voltage in millivolts in0_label "core" in1_label "sdram_c" in2_label "sdram_i" in3_label "sdram_p" in0_lcrit_alarm Undervoltage alarm ======================= ====================================================== The voltage inputs and labels are only exposed if the firmware reports support for the corresponding voltage ID. |