1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/allwinn
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Allwinner A64 DMA Controller
8
9 maintainers:
10 - Chen-Yu Tsai <wens@csie.org>
11 - Maxime Ripard <mripard@kernel.org>
12
13 allOf:
14 - $ref: dma-controller.yaml#
15
16 properties:
17 "#dma-cells":
18 const: 1
19 description: The cell is the request line
20
21 compatible:
22 oneOf:
23 - enum:
24 - allwinner,sun20i-d1-dma
25 - allwinner,sun50i-a64-dma
26 - allwinner,sun50i-a100-dma
27 - allwinner,sun50i-h6-dma
28 - items:
29 - const: allwinner,sun8i-r40-dma
30 - const: allwinner,sun50i-a64-dma
31 - items:
32 - const: allwinner,sun50i-h616-dma
33 - const: allwinner,sun50i-a100-dma
34
35 reg:
36 maxItems: 1
37
38 interrupts:
39 maxItems: 1
40
41 clocks:
42 minItems: 1
43 maxItems: 2
44
45 clock-names:
46 items:
47 - const: bus
48 - const: mbus
49
50 resets:
51 maxItems: 1
52
53 required:
54 - "#dma-cells"
55 - compatible
56 - reg
57 - interrupts
58 - clocks
59 - resets
60 - dma-channels
61
62 if:
63 properties:
64 compatible:
65 contains:
66 enum:
67 - allwinner,sun20i-d1-dma
68 - allwinner,sun50i-a100-dma
69 - allwinner,sun50i-h6-dma
70
71 then:
72 properties:
73 clocks:
74 minItems: 2
75
76 required:
77 - clock-names
78
79 else:
80 properties:
81 clocks:
82 maxItems: 1
83
84 unevaluatedProperties: false
85
86 examples:
87 - |
88 dma: dma-controller@1c02000 {
89 compatible = "allwinner,sun50i-a64-dma
90 reg = <0x01c02000 0x1000>;
91 interrupts = <0 50 4>;
92 clocks = <&ccu 30>;
93 dma-channels = <8>;
94 dma-requests = <27>;
95 resets = <&ccu 7>;
96 #dma-cells = <1>;
97 };
98
99 ...
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