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1* Freescale 83xx DMA Controller
2
3Freescale PowerPC 83xx have on chip general purpose DMA controllers.
4
5Required properties:
6
7- compatible : compatible list, contains 2 entries, first is
8 "fsl,CHIP-dma", where CHIP is the processor
9 (mpc8349, mpc8360, etc.) and the second is
10 "fsl,elo-dma"
11- reg : <registers mapping for DMA general status reg>
12- ranges : Should be defined as specified in 1) to describe the
13 DMA controller channels.
14- cell-index : controller index. 0 for controller @ 0x8100
15- interrupts : <interrupt mapping for DMA IRQ>
16- interrupt-parent : optional, if needed for interrupt mapping
17
18
19- DMA channel nodes:
20 - compatible : compatible list, contains 2 entries, first is
21 "fsl,CHIP-dma-channel", where CHIP is the processor
22 (mpc8349, mpc8350, etc.) and the second is
23 "fsl,elo-dma-channel"
24 - reg : <registers mapping for channel>
25 - cell-index : dma channel index starts at 0.
26
27Optional properties:
28 - interrupts : <interrupt mapping for DMA channel IRQ>
29 (on 83xx this is expected to be identical to
30 the interrupts property of the parent node)
31 - interrupt-parent : optional, if needed for interrupt mapping
32
33Example:
34 dma@82a8 {
35 #address-cells = <1>;
36 #size-cells = <1>;
37 compatible = "fsl,mpc8349-dma", "fsl,elo-dma";
38 reg = <82a8 4>;
39 ranges = <0 8100 1a4>;
40 interrupt-parent = <&ipic>;
41 interrupts = <47 8>;
42 cell-index = <0>;
43 dma-channel@0 {
44 compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
45 cell-index = <0>;
46 reg = <0 80>;
47 };
48 dma-channel@80 {
49 compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
50 cell-index = <1>;
51 reg = <80 80>;
52 };
53 dma-channel@100 {
54 compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
55 cell-index = <2>;
56 reg = <100 80>;
57 };
58 dma-channel@180 {
59 compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
60 cell-index = <3>;
61 reg = <180 80>;
62 };
63 };
64
65* Freescale 85xx/86xx DMA Controller
66
67Freescale PowerPC 85xx/86xx have on chip general purpose DMA controllers.
68
69Required properties:
70
71- compatible : compatible list, contains 2 entries, first is
72 "fsl,CHIP-dma", where CHIP is the processor
73 (mpc8540, mpc8540, etc.) and the second is
74 "fsl,eloplus-dma"
75- reg : <registers mapping for DMA general status reg>
76- cell-index : controller index. 0 for controller @ 0x21000,
77 1 for controller @ 0xc000
78- ranges : Should be defined as specified in 1) to describe the
79 DMA controller channels.
80
81- DMA channel nodes:
82 - compatible : compatible list, contains 2 entries, first is
83 "fsl,CHIP-dma-channel", where CHIP is the processor
84 (mpc8540, mpc8560, etc.) and the second is
85 "fsl,eloplus-dma-channel"
86 - cell-index : dma channel index starts at 0.
87 - reg : <registers mapping for channel>
88 - interrupts : <interrupt mapping for DMA channel IRQ>
89 - interrupt-parent : optional, if needed for interrupt mapping
90
91Example:
92 dma@21300 {
93 #address-cells = <1>;
94 #size-cells = <1>;
95 compatible = "fsl,mpc8540-dma", "fsl,eloplus-dma";
96 reg = <21300 4>;
97 ranges = <0 21100 200>;
98 cell-index = <0>;
99 dma-channel@0 {
100 compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
101 reg = <0 80>;
102 cell-index = <0>;
103 interrupt-parent = <&mpic>;
104 interrupts = <14 2>;
105 };
106 dma-channel@80 {
107 compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
108 reg = <80 80>;
109 cell-index = <1>;
110 interrupt-parent = <&mpic>;
111 interrupts = <15 2>;
112 };
113 dma-channel@100 {
114 compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
115 reg = <100 80>;
116 cell-index = <2>;
117 interrupt-parent = <&mpic>;
118 interrupts = <16 2>;
119 };
120 dma-channel@180 {
121 compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
122 reg = <180 80>;
123 cell-index = <3>;
124 interrupt-parent = <&mpic>;
125 interrupts = <17 2>;
126 };
127 };