| 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. | |