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UniPhier Media IO DMA controller
This works as an external DMA engine for SD/eMMC controllers etc.
found in UniPhier LD4, Pro4, sLD8 SoCs.
Required properties:
- compatible: should be "socionext,uniphier-mio-dmac".
- reg: offset and length of the register set for the device.
- interrupts: a list of interrupt specifiers associated with the DMA channels.
- clocks: a single clock specifier.
- #dma-cells: should be <1>. The single cell represents the channel index.
Example:
dmac: dma-controller@5a000000 {
compatible = "socionext,uniphier-mio-dmac";
reg = <0x5a000000 0x1000>;
interrupts = <0 68 4>, <0 68 4>, <0 69 4>, <0 70 4>,
<0 71 4>, <0 72 4>, <0 73 4>, <0 74 4>;
clocks = <&mio_clk 7>;
#dma-cells = <1>;
};
Note:
In the example above, "interrupts = <0 68 4>, <0 68 4>, ..." is not a typo.
The first two channels share a single interrupt line.
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