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Documentation: gpio: document the active_low field in the sysfs ABI

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Exported GPIO lines also have the active_low attribute which is not
documented. Add a short mention for it.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250610-gpio-sysfs-chip-export-v1-2-a8c7aa4478b1@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Bartosz Golaszewski 2025-06-10 16:38:17 +02:00
parent 5ed0d32805
commit 1ae8603074
1 changed files with 1 additions and 0 deletions
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Documentation/ABI/obsolete/sysfs-gpio
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@ -22,6 +22,7 @@ Description:
/value ... always readable, writes fail for input GPIOs
/direction ... r/w as: in, out (default low); write: high, low
/edge ... r/w as: none, falling, rising, both
/active_low ... r/w as: 0, 1
/gpiochipN ... for each gpiochip; #N is its first GPIO
/base ... (r/o) same as N
/label ... (r/o) descriptive, not necessarily unique