tegrakernel/kernel/kernel-4.9/Documentation/gpio/00-INDEX

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00-INDEX
- This file
gpio.txt
- Introduction to GPIOs and their kernel interfaces
consumer.txt
- How to obtain and use GPIOs in a driver
driver.txt
- How to write a GPIO driver
drivers-on-gpio.txt:
- Drivers in other subsystems that can use GPIO to provide more
complex functionality.
board.txt
- How to assign GPIOs to a consumer device and a function
sysfs.txt
- Information about the GPIO sysfs interface
gpio-legacy.txt
- Historical documentation of the deprecated GPIO integer interface