1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/cirrus,ep9301-i2s.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cirrus EP93xx I2S Controller
8
9 description: |
10 The I2S controller is used to stream serial audio data between the external
11 I2S CODECs’, ADCs/DACs, and the ARM Core. The controller supports I2S, Left-
12 and Right-Justified DSP formats.
13
14 maintainers:
15 - Alexander Sverdlin <alexander.sverdlin@gmail.com>
16
17 allOf:
18 - $ref: dai-common.yaml#
19
20 properties:
21 compatible:
22 const: cirrus,ep9301-i2s
23
24 '#sound-dai-cells':
25 const: 0
26
27 reg:
28 maxItems: 1
29
30 interrupts:
31 maxItems: 1
32
33 clocks:
34 minItems: 3
35 maxItems: 3
36
37 clock-names:
38 items:
39 - const: mclk
40 - const: sclk
41 - const: lrclk
42
43 dmas:
44 items:
45 - description: out DMA channel
46 - description: in DMA channel
47
48 dma-names:
49 items:
50 - const: tx
51 - const: rx
52
53 port:
54 $ref: audio-graph-port.yaml#
55 unevaluatedProperties: false
56
57 required:
58 - compatible
59 - '#sound-dai-cells'
60 - reg
61 - clocks
62 - clock-names
63
64 additionalProperties: false
65
66 examples:
67 - |
68 i2s: i2s@80820000 {
69 compatible = "cirrus,ep9301-i2s";
70 #sound-dai-cells = <0>;
71 reg = <0x80820000 0x100>;
72 interrupt-parent = <&vic1>;
73 interrupts = <28>;
74 clocks = <&syscon 29>,
75 <&syscon 30>,
76 <&syscon 31>;
77 clock-names = "mclk", "sclk", "lrclk";
78 dmas = <&dma0 0 1>, <&dma0 0 2>;
79 dma-names = "tx", "rx";
80 };
81
82 ...
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