linux/Documentation/devicetree/bindings/dma/atmel-dma.txt

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* Atmel Direct Memory Access Controller (DMA)
Required properties:
- compatible: Should be "atmel,<chip>-dma"
- reg: Should contain DMA registers location and length
- interrupts: Should contain DMA interrupt
Examples:
dma@ffffec00 {
compatible = "atmel,at91sam9g45-dma";
reg = <0xffffec00 0x200>;
interrupts = <21>;
};