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devicetree: Add ARM pl061 gpio controller binding doc

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Add binding documentation for ARM's Primecell PL061 GPIO controller.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring 2011-09-23 09:55:54 -05:00
parent dc93728084
commit f614c74f94
1 changed files with 10 additions and 0 deletions
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Documentation/devicetree/bindings/gpio/pl061-gpio.txt Normal file
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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.