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devicetree: Add ARM pl022 spi controller binding doc

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Add binding documentation for ARM's Primecell PL022 SPI controller.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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Rob Herring 2011-09-23 09:56:53 -05:00
parent f614c74f94
commit 6add6967a4
1 changed files with 12 additions and 0 deletions
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Documentation/devicetree/bindings/spi/spi_pl022.txt Normal file
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ARM PL022 SPI controller
Required properties:
- compatible : "arm,pl022", "arm,primecell"
- reg : Offset and length of the register set for the device
- interrupts : Should contain SPI controller interrupt
Optional properties:
- cs-gpios : should specify GPIOs used for chipselects.
The gpios will be referred to as reg = <index> in the SPI child nodes.
If unspecified, a single SPI device without a chip select can be used.