1* CSR SiRFSoC DMA controller 2 3See dma.txt first 4 5Required properties: 6- compatible: Should be "sirf,prima2-dmac", "sirf,atlas7-dmac" or 7 "sirf,atlas7-dmac-v2" 8- reg: Should contain DMA registers location and length. 9- interrupts: Should contain one interrupt shared by all channel 10- #dma-cells: must be <1>. used to represent the number of integer 11 cells in the dmas property of client device. 12- clocks: clock required 13 14Example: 15 16Controller: 17dmac0: dma-controller@b00b0000 { 18 compatible = "sirf,prima2-dmac"; 19 reg = <0xb00b0000 0x10000>; 20 interrupts = <12>; 21 clocks = <&clks 24>; 22 #dma-cells = <1>; 23}; 24 25 26Client: 27Fill the specific dma request line in dmas. In the below example, spi0 read 28channel request line is 9 of the 2nd dma controller, while write channel uses 294 of the 2nd dma controller; spi1 read channel request line is 12 of the 1st 30dma controller, while write channel uses 13 of the 1st dma controller: 31 32spi0: spi@b00d0000 { 33 compatible = "sirf,prima2-spi"; 34 dmas = <&dmac1 9>, 35 <&dmac1 4>; 36 dma-names = "rx", "tx"; 37}; 38 39spi1: spi@b0170000 { 40 compatible = "sirf,prima2-spi"; 41 dmas = <&dmac0 12>, 42 <&dmac0 13>; 43 dma-names = "rx", "tx"; 44}; 45