* CSR SiRFSoC DMA controller See dma.txt first Required properties: - compatible: Should be "sirf,prima2-dmac", "sirf,atlas7-dmac" or "sirf,atlas7-dmac-v2" - reg: Should contain DMA registers location and length. - interrupts: Should contain one interrupt shared by all channel - #dma-cells: must be <1>. used to represent the number of integer cells in the dmas property of client device. - clocks: clock required Example: Controller: dmac0: dma-controller@b00b0000 { compatible = "sirf,prima2-dmac"; reg = <0xb00b0000 0x10000>; interrupts = <12>; clocks = <&clks 24>; #dma-cells = <1>; }; Client: Fill the specific dma request line in dmas. In the below example, spi0 read channel request line is 9 of the 2nd dma controller, while write channel uses 4 of the 2nd dma controller; spi1 read channel request line is 12 of the 1st dma controller, while write channel uses 13 of the 1st dma controller: spi0: spi@b00d0000 { compatible = "sirf,prima2-spi"; dmas = <&dmac1 9>, <&dmac1 4>; dma-names = "rx", "tx"; }; spi1: spi@b0170000 { compatible = "sirf,prima2-spi"; dmas = <&dmac0 12>, <&dmac0 13>; dma-names = "rx", "tx"; };