xref: /freebsd/sys/contrib/device-tree/Bindings/dma/socionext,uniphier-mio-dmac.yaml (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/socionext,uniphier-mio-dmac.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: UniPhier Media IO DMA controller
8
9description: |
10  This works as an external DMA engine for SD/eMMC controllers etc.
11  found in UniPhier LD4, Pro4, sLD8 SoCs.
12
13maintainers:
14  - Masahiro Yamada <yamada.masahiro@socionext.com>
15
16allOf:
17  - $ref: "dma-controller.yaml#"
18
19properties:
20  compatible:
21    const: socionext,uniphier-mio-dmac
22
23  reg:
24    maxItems: 1
25
26  interrupts:
27    description: |
28      A list of interrupt specifiers associated with the DMA channels.
29      The number of interrupt lines is SoC-dependent.
30
31  clocks:
32    maxItems: 1
33
34  resets:
35    maxItems: 1
36
37  '#dma-cells':
38    description: The single cell represents the channel index.
39    const: 1
40
41required:
42  - compatible
43  - reg
44  - interrupts
45  - clocks
46  - '#dma-cells'
47
48additionalProperties: false
49
50examples:
51  - |
52    // In the example below, "interrupts = <0 68 4>, <0 68 4>, ..." is not a
53    // typo. The first two channels share a single interrupt line.
54
55    dmac: dma-controller@5a000000 {
56        compatible = "socionext,uniphier-mio-dmac";
57        reg = <0x5a000000 0x1000>;
58        interrupts = <0 68 4>, <0 68 4>, <0 69 4>, <0 70 4>,
59                     <0 71 4>, <0 72 4>, <0 73 4>, <0 74 4>;
60        clocks = <&mio_clk 7>;
61        resets = <&mio_rst 7>;
62        #dma-cells = <1>;
63    };
64