1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/cirrus,ep9301-dma-m2m.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cirrus Logic ep93xx SoC DMA controller
8
9 maintainers:
10 - Alexander Sverdlin <alexander.sverdlin@gmail.com>
11 - Nikita Shubin <nikita.shubin@maquefel.me>
12
13 allOf:
14 - $ref: dma-controller.yaml#
15
16 properties:
17 compatible:
18 oneOf:
19 - const: cirrus,ep9301-dma-m2m
20 - items:
21 - enum:
22 - cirrus,ep9302-dma-m2m
23 - cirrus,ep9307-dma-m2m
24 - cirrus,ep9312-dma-m2m
25 - cirrus,ep9315-dma-m2m
26 - const: cirrus,ep9301-dma-m2m
27
28 reg:
29 items:
30 - description: m2m0 channel registers
31 - description: m2m1 channel registers
32
33 clocks:
34 items:
35 - description: m2m0 channel gate clock
36 - description: m2m1 channel gate clock
37
38 clock-names:
39 items:
40 - const: m2m0
41 - const: m2m1
42
43 interrupts:
44 items:
45 - description: m2m0 channel interrupt
46 - description: m2m1 channel interrupt
47
48 '#dma-cells':
49 const: 2
50 description: |
51 The first cell is the unique device channel number as indicated by this
52 table for ep93xx:
53
54 10: SPI controller
55 11: IDE controller
56
57 The second cell is the DMA direction line number:
58
59 1: Memory to device
60 2: Device to memory
61
62 required:
63 - compatible
64 - reg
65 - clocks
66 - clock-names
67 - interrupts
68
69 additionalProperties: false
70
71 examples:
72 - |
73 #include <dt-bindings/clock/cirrus,ep9301-syscon.h>
74 dma-controller@80000100 {
75 compatible = "cirrus,ep9301-dma-m2m";
76 reg = <0x80000100 0x0040>,
77 <0x80000140 0x0040>;
78 clocks = <&syscon EP93XX_CLK_M2M0>,
79 <&syscon EP93XX_CLK_M2M1>;
80 clock-names = "m2m0", "m2m1";
81 interrupt-parent = <&vic0>;
82 interrupts = <17>, <18>;
83 #dma-cells = <2>;
84 };
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