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1 * CSR SiRFSoC DMA controller
2
3 See dma.txt first
4
5 Required 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
14 Example:
15
16 Controller:
17 dmac0: 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
26 Client:
27 Fill the specific dma request line in dmas. In the below example, spi0 read
28 channel request line is 9 of the 2nd dma controller, while write channel uses
29 4 of the 2nd dma controller; spi1 read channel request line is 12 of the 1st
30 dma controller, while write channel uses 13 of the 1st dma controller:
31
32 spi0: spi@b00d0000 {
33         compatible = "sirf,prima2-spi";
34         dmas = <&dmac1 9>,
35                 <&dmac1 4>;
36         dma-names = "rx", "tx";
37 };
38
39 spi1: spi@b0170000 {
40         compatible = "sirf,prima2-spi";
41         dmas = <&dmac0 12>,
42                 <&dmac0 13>;
43         dma-names = "rx", "tx";
44 };