linux/Documentation/devicetree/bindings/spi/spi-orion.txt

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Marvell Orion SPI device
Required properties:
- compatible : should be "marvell,orion-spi" or "marvell,armada-370-spi".
- reg : offset and length of the register set for the device
- cell-index : Which of multiple SPI controllers is this.
Optional properties:
- interrupts : Is currently not used.
Example:
spi@10600 {
compatible = "marvell,orion-spi";
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
reg = <0x10600 0x28>;
interrupts = <23>;
status = "disabled";
};