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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", "auart4-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 };