1 MOXA ART DMA Controller
2
3 See dma.txt first
4
5 Required properties:
6
7 - compatible : Must be "moxa,moxart-dma"
8 - reg : Should contain registers location and length
9 - interrupts : Should contain an interrupt-specifier for the sole
10 interrupt generated by the device
11 - #dma-cells : Should be 1, a single cell holding a line request number
12
13 Example:
14
15 dma: dma@90500000 {
16 compatible = "moxa,moxart-dma";
17 reg = <0x90500080 0x40>;
18 interrupts = <24 0>;
19 #dma-cells = <1>;
20 };
21
22
23 Clients:
24
25 DMA clients connected to the MOXA ART DMA controller must use the format
26 described in the dma.txt file, using a two-cell specifier for each channel:
27 a phandle plus one integer cells.
28 The two cells in order are:
29
30 1. A phandle pointing to the DMA controller.
31 2. Peripheral identifier for the hardware handshaking interface.
32
33 Example:
34 Use specific request line passing from dma
35 For example, MMC request line is 5
36
37 mmc: mmc@98e00000 {
38 compatible = "moxa,moxart-mmc";
39 reg = <0x98e00000 0x5C>;
40 interrupts = <5 0>;
41 clocks = <&clk_apb>;
42 dmas = <&dma 5>,
43 <&dma 5>;
44 dma-names = "tx", "rx";
45 };
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