DMA nodes are defined to describe on-chip DMA interfaces in
APM X-Gene SoC.
Required properties for DMA interfaces:
- compatible: Should be "apm,xgene-dma".
- device_type: set to "dma".
- reg: Address and length of the register set for the device.
It contains the information of registers in the following order:
1st - DMA control and status register address space.
2nd - Descriptor ring control and status register address space.
3rd - Descriptor ring command register address space.
4th - Soc efuse register address space.
- interrupts: DMA has 5 interrupts sources. 1st interrupt is
DMA error reporting interrupt. 2nd, 3rd, 4th and 5th interrupts
are completion interrupts for each DMA channels.
- clocks: Reference to the clock entry.
Optional properties:
- dma-coherent : Present if dma operations are coherent
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