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Levente Révész 5ef5f3c224 Documentation: gpio: Add a compatibility and feature list for PCA953x
I went through all the datasheets and created this note listing
chip functions and register layouts.

Signed-off-by: Levente Révész <levente.revesz@eilabs.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20251112224924.2091880-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-11-19 12:07:39 +01:00

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ReStructuredText

===================================
General Purpose Input/Output (GPIO)
===================================
Contents:
.. toctree::
:maxdepth: 2
intro
using-gpio
driver
consumer
board
legacy-boards
drivers-on-gpio
bt8xxgpio
pca953x
Core
====
.. kernel-doc:: include/linux/gpio/driver.h
:internal:
.. kernel-doc:: drivers/gpio/gpiolib.c
:export:
ACPI support
============
.. kernel-doc:: drivers/gpio/gpiolib-acpi-core.c
:export:
Device tree support
===================
.. kernel-doc:: drivers/gpio/gpiolib-of.c
:export:
Device-managed API
==================
.. kernel-doc:: drivers/gpio/gpiolib-devres.c
:export:
sysfs helpers
=============
.. kernel-doc:: drivers/gpio/gpiolib-sysfs.c
:export: