zynq ps linux设备驱动,Zynq PS侧DMA驱动

Linux中，驱动必然会有驱动对应的设备类型。在linux4.4版本中，其设备是以设备树的形式展现的。

PS端设备树的devicetree表示如下

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dmac_s: dmac@f8003000 {

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compatible = "arm,pl330", "arm,primecell";

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reg = <0xf8003000 0x1000>;

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interrupt-parent = ;

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interrupt-names = "abort", "dma0", "dma1", "dma2", "dma3",

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"dma4", "dma5", "dma6", "dma7";

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interrupts = <0 13 4>,

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<0 14 4>, <0 15 4>,

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<0 16 4>, <0 17 4>,

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<0 40 4>, <0 41 4>,

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<0 42 4>, <0 43 4>;

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#dma-cells = <1>;

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#dma-channels = <8>;

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#dma-requests = &l