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android/Documentation/ABI/testing/sysfs-class-led-trigger-usbport
threeeye bc1d038eac REVVL 6 Pro kernel bring-up: full working tree snapshot (2026-09-12)
Squashed backup commit (no shallow-clone history issues) of
xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream
commit 9eece662e) plus all fixes applied to get everpal_defconfig building
clean against a modern (GCC 15.2.0) toolchain -- see the previous commit
message on the lineage-23.2 branch (also in this repo history is not
available here since this is a squashed snapshot; full incremental history
lives in the local DL380 checkout and the upstream GitHub remote).

Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
2026-09-12 13:36:46 +00:00

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What: /sys/class/leds/<led>/ports/<port>
Date: September 2016
KernelVersion: 4.9
Contact: linux-leds@vger.kernel.org
linux-usb@vger.kernel.org
Description:
Every dir entry represents a single USB port that can be
selected for the USB port trigger. Selecting ports makes trigger
observing them for any connected devices and lighting on LED if
there are any.
Echoing "1" value selects USB port. Echoing "0" unselects it.
Current state can be also read.