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Documentation / devicetree / bindings / dma / fsl-mxs-dma.txt




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Based on kernel version 3.16. Page generated on 2014-08-06 21:36 EST.

1	* Freescale MXS DMA
2	
3	Required properties:
4	- compatible : Should be "fsl,<chip>-dma-apbh" or "fsl,<chip>-dma-apbx"
5	- reg : Should contain registers location and length
6	- interrupts : Should contain the interrupt numbers of DMA channels.
7	  If a channel is empty/reserved, 0 should be filled in place.
8	- #dma-cells : Must be <1>.  The number cell specifies the channel ID.
9	- dma-channels : Number of channels supported by the DMA controller
10	
11	Optional properties:
12	- interrupt-names : Name of DMA channel interrupts
13	
14	Supported chips:
15	imx23, imx28.
16	
17	Examples:
18	
19	dma_apbh: dma-apbh@80004000 {
20		compatible = "fsl,imx28-dma-apbh";
21		reg = <0x80004000 0x2000>;
22		interrupts = <82 83 84 85
23			      88 88 88 88
24			      88 88 88 88
25			      87 86 0 0>;
26		interrupt-names = "ssp0", "ssp1", "ssp2", "ssp3",
27				  "gpmi0", "gmpi1", "gpmi2", "gmpi3",
28				  "gpmi4", "gmpi5", "gpmi6", "gmpi7",
29				  "hsadc", "lcdif", "empty", "empty";
30		#dma-cells = <1>;
31		dma-channels = <16>;
32	};
33	
34	dma_apbx: dma-apbx@80024000 {
35		compatible = "fsl,imx28-dma-apbx";
36		reg = <0x80024000 0x2000>;
37		interrupts = <78 79 66 0
38			      80 81 68 69
39			      70 71 72 73
40			      74 75 76 77>;
41		interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty",
42				  "saif0", "saif1", "i2c0", "i2c1",
43				  "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",
44				  "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";
45		#dma-cells = <1>;
46		dma-channels = <16>;
47	};
48	
49	DMA clients connected to the MXS DMA controller must use the format
50	described in the dma.txt file.
51	
52	Examples:
53	
54	auart0: serial@8006a000 {
55		compatible = "fsl,imx28-auart", "fsl,imx23-auart";
56		reg = <0x8006a000 0x2000>;
57		interrupts = <112>;
58		dmas = <&dma_apbx 8>, <&dma_apbx 9>;
59		dma-names = "rx", "tx";
60	};
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