xref: /openbmc/linux/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml (revision 4464005a12b5c79e1a364e6272ee10a83413f928) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: SiFive Unleashed Rev C000 Platform DMA
8
9maintainers:
10  - Green Wan <green.wan@sifive.com>
11  - Palmer Debbelt <palmer@sifive.com>
12  - Paul Walmsley <paul.walmsley@sifive.com>
13
14description: |
15  Platform DMA is a DMA engine of SiFive Unleashed. It supports 4
16  channels. Each channel has 2 interrupts. One is for DMA done and
17  the other is for DME error.
18
19  In different SoC, DMA could be attached to different IRQ line.
20  DT file need to be changed to meet the difference. For technical
21  doc,
22
23  https://static.dev.sifive.com/FU540-C000-v1.0.pdf
24
25properties:
26  compatible:
27    items:
28      - const: sifive,fu540-c000-pdma
29
30  reg:
31    maxItems: 1
32
33  interrupts:
34    minItems: 1
35    maxItems: 8
36
37  '#dma-cells':
38    const: 1
39
40required:
41  - compatible
42  - reg
43  - interrupts
44  - '#dma-cells'
45
46additionalProperties: false
47
48examples:
49  - |
50    dma@3000000 {
51      compatible = "sifive,fu540-c000-pdma";
52      reg = <0x3000000 0x8000>;
53      interrupts = <23 24 25 26 27 28 29 30>;
54      #dma-cells = <1>;
55    };
56
57...
58