1Allwinner A31 DMA Controller
2
3This driver follows the generic DMA bindings defined in dma.txt.
4
5Required properties:
6
7- compatible:	Must be "allwinner,sun6i-a31-dma" or "allwinner,sun8i-a23-dma"
8- reg:		Should contain the registers base address and length
9- interrupts:	Should contain a reference to the interrupt used by this device
10- clocks:	Should contain a reference to the parent AHB clock
11- resets:	Should contain a reference to the reset controller asserting
12		this device in reset
13- #dma-cells :	Should be 1, a single cell holding a line request number
14
15Example:
16	dma: dma-controller@01c02000 {
17		compatible = "allwinner,sun6i-a31-dma";
18		reg = <0x01c02000 0x1000>;
19		interrupts = <0 50 4>;
20		clocks = <&ahb1_gates 6>;
21		resets = <&ahb1_rst 6>;
22		#dma-cells = <1>;
23	};
24
25Clients:
26
27DMA clients connected to the A31 DMA controller must use the format
28described in the dma.txt file, using a two-cell specifier for each
29channel: a phandle plus one integer cells.
30The two cells in order are:
31
321. A phandle pointing to the DMA controller.
332. The port ID as specified in the datasheet
34
35Example:
36spi2: spi@01c6a000 {
37	compatible = "allwinner,sun6i-a31-spi";
38	reg = <0x01c6a000 0x1000>;
39	interrupts = <0 67 4>;
40	clocks = <&ahb1_gates 22>, <&spi2_clk>;
41	clock-names = "ahb", "mod";
42	dmas = <&dma 25>, <&dma 25>;
43	dma-names = "rx", "tx";
44	resets = <&ahb1_rst 22>;
45};
46