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v0.8.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
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Tip revision: fea7a08acb13524b47711625eebea40a0ede69a0 authored by Linus Torvalds on 22 August 2012, 20:29:06 UTC
Linux 3.6-rc3
Tip revision: fea7a08
pl061-gpio.txt 
ARM PL061 GPIO controller

Required properties:
- compatible : "arm,pl061", "arm,primecell"
- #gpio-cells : Should be two. The first cell is the pin number and the
  second cell is used to specify optional parameters:
  - bit 0 specifies polarity (0 for normal, 1 for inverted)
- gpio-controller : Marks the device node as a GPIO controller.
- interrupts : Interrupt mapping for GPIO IRQ.
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