xref: /linux/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml (revision 4359a011e259a4608afc7fb3635370c9d4ba5943) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/allwinner,sun50i-a64-dma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Allwinner A64 DMA Controller Device Tree Bindings
8
9maintainers:
10  - Chen-Yu Tsai <wens@csie.org>
11  - Maxime Ripard <mripard@kernel.org>
12
13allOf:
14  - $ref: "dma-controller.yaml#"
15
16properties:
17  "#dma-cells":
18    const: 1
19    description: The cell is the request line number.
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
32  reg:
33    maxItems: 1
34
35  interrupts:
36    maxItems: 1
37
38  clocks:
39    minItems: 1
40    maxItems: 2
41
42  clock-names:
43    items:
44      - const: bus
45      - const: mbus
46
47  resets:
48    maxItems: 1
49
50required:
51  - "#dma-cells"
52  - compatible
53  - reg
54  - interrupts
55  - clocks
56  - resets
57  - dma-channels
58
59if:
60  properties:
61    compatible:
62      enum:
63        - allwinner,sun20i-d1-dma
64        - allwinner,sun50i-a100-dma
65        - allwinner,sun50i-h6-dma
66
67then:
68  properties:
69    clocks:
70      minItems: 2
71
72  required:
73    - clock-names
74
75else:
76  properties:
77    clocks:
78      maxItems: 1
79
80unevaluatedProperties: false
81
82examples:
83  - |
84    dma: dma-controller@1c02000 {
85        compatible = "allwinner,sun50i-a64-dma";
86        reg = <0x01c02000 0x1000>;
87        interrupts = <0 50 4>;
88        clocks = <&ccu 30>;
89        dma-channels = <8>;
90        dma-requests = <27>;
91        resets = <&ccu 7>;
92        #dma-cells = <1>;
93    };
94
95...
96