Documentation/devicetree/bindings/dma/img-mdc-dma.txt

* Imagination Technologies Meta DMA Controller (MDC)

Required properties:
- #dma-cells : Must be <2>. Used by slave devices to request a DMA channel.
- compatible : Should be "img,mdc-dma".
- reg        : Should contain DMA registers location and length. This should include
  all of the per-channel registers.
- interrupts : Should contain all of the per-channel DMA interrupts.

Examples:

dma: dma-controller@0200c000 {
	#dma-cells = <2>;
	compatible = "img,mdc-dma";
	reg = <0x0200c000 0x1000>;
	interrupts = < 21 4
		       22 4
		       23 4
		       24 4
		       25 4
		       26 4
		       27 4
		       28 4 >;
};

DMA clients connected to the Meta DMA Controller (MDC) must comply to the format
described in the dma.txt file, using a two-cell specifier for each channel. The
cells are:

1. The number of the DMA peripheral.
2. The DMA request line number.

Example:

spi1: spi@02004e00 {
	...
	dmas = <&dma 7 0xffffffff
		&dma 8 0xffffffff>; /* -1 for any channel */
	dma-names = "rx", "tx";
};