1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/loongson,ls1b-apbdma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Loongson-1 APB DMA Controller
8
9 maintainers:
10 - Keguang Zhang <keguang.zhang@gmail.com>
11
12 description:
13 Loongson-1 APB DMA controller provides 3 independent channels for
14 peripherals such as NAND, audio playback and capture.
15
16 properties:
17 compatible:
18 oneOf:
19 - const: loongson,ls1b-apbdma
20 - items:
21 - enum:
22 - loongson,ls1a-apbdma
23 - loongson,ls1c-apbdma
24 - const: loongson,ls1b-apbdma
25
26 reg:
27 maxItems: 1
28
29 interrupts:
30 items:
31 - description: NAND interrupt
32 - description: Audio playback interrupt
33 - description: Audio capture interrupt
34
35 interrupt-names:
36 items:
37 - const: ch0
38 - const: ch1
39 - const: ch2
40
41 '#dma-cells':
42 const: 1
43
44 required:
45 - compatible
46 - reg
47 - interrupts
48 - interrupt-names
49 - '#dma-cells'
50
51 additionalProperties: false
52
53 examples:
54 - |
55 #include <dt-bindings/interrupt-controller/irq.h>
56 dma-controller@1fd01160 {
57 compatible = "loongson,ls1b-apbdma";
58 reg = <0x1fd01160 0x4>;
59 interrupt-parent = <&intc0>;
60 interrupts = <13 IRQ_TYPE_EDGE_RISING>,
61 <14 IRQ_TYPE_EDGE_RISING>,
62 <15 IRQ_TYPE_EDGE_RISING>;
63 interrupt-names = "ch0", "ch1", "ch2";
64 #dma-cells = <1>;
65 };
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