1 # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/allwinner,sun4i-a10-i2s.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Allwinner A10 I2S Controller
8
9 maintainers:
10 - Chen-Yu Tsai <wens@csie.org>
11 - Maxime Ripard <mripard@kernel.org>
12
13 properties:
14 "#sound-dai-cells":
15 const: 0
16
17 compatible:
18 oneOf:
19 - const: allwinner,sun4i-a10-i2s
20 - const: allwinner,sun6i-a31-i2s
21 - const: allwinner,sun8i-a83t-i2s
22 - const: allwinner,sun8i-h3-i2s
23 - items:
24 - const: allwinner,sun8i-r40-i2s
25 - const: allwinner,sun8i-h3-i2s
26 - items:
27 - const: allwinner,sun8i-v3-i2s
28 - const: allwinner,sun8i-h3-i2s
29 - const: allwinner,sun50i-a64-codec-i2s
30 - items:
31 - const: allwinner,sun50i-a64-i2s
32 - const: allwinner,sun8i-h3-i2s
33 - const: allwinner,sun50i-h6-i2s
34 - const: allwinner,sun50i-r329-i2s
35 - items:
36 - const: allwinner,sun20i-d1-i2s
37 - const: allwinner,sun50i-r329-i2s
38
39 reg:
40 maxItems: 1
41
42 interrupts:
43 maxItems: 1
44
45 clocks:
46 items:
47 - description: Bus Clock
48 - description: Module Clock
49
50 clock-names:
51 items:
52 - const: apb
53 - const: mod
54
55 # Even though it only applies to subschemas under the conditionals,
56 # not listing them here will trigger a warning because of the
57 # additionalsProperties set to false.
58 dmas: true
59 dma-names: true
60 resets:
61 maxItems: 1
62
63 allOf:
64 - $ref: dai-common.yaml#
65 - if:
66 properties:
67 compatible:
68 contains:
69 enum:
70 - allwinner,sun6i-a31-i2s
71 - allwinner,sun8i-a83t-i2s
72 - allwinner,sun8i-h3-i2s
73 - allwinner,sun50i-a64-codec-i2s
74 - allwinner,sun50i-h6-i2s
75 - allwinner,sun50i-r329-i2s
76
77 then:
78 required:
79 - resets
80
81 - if:
82 properties:
83 compatible:
84 contains:
85 enum:
86 - allwinner,sun8i-a83t-i2s
87 - allwinner,sun8i-h3-i2s
88
89 then:
90 properties:
91 dmas:
92 minItems: 1
93 items:
94 - description: RX DMA Channel
95 - description: TX DMA Channel
96 description:
97 Some controllers cannot receive but can only transmit
98 data. In such a case, the RX DMA channel is to be omitted.
99
100 dma-names:
101 oneOf:
102 - items:
103 - const: rx
104 - const: tx
105 - const: tx
106 description:
107 Some controllers cannot receive but can only transmit
108 data. In such a case, the RX name is to be omitted.
109
110 else:
111 properties:
112 dmas:
113 items:
114 - description: RX DMA Channel
115 - description: TX DMA Channel
116
117 dma-names:
118 items:
119 - const: rx
120 - const: tx
121
122 required:
123 - "#sound-dai-cells"
124 - compatible
125 - reg
126 - interrupts
127 - clocks
128 - clock-names
129 - dmas
130 - dma-names
131
132 unevaluatedProperties: false
133
134 examples:
135 - |
136 i2s0: i2s@1c22400 {
137 #sound-dai-cells = <0>;
138 compatible = "allwinner,sun4i-a10-i2s";
139 reg = <0x01c22400 0x400>;
140 interrupts = <0 16 4>;
141 clocks = <&apb0_gates 3>, <&i2s0_clk>;
142 clock-names = "apb", "mod";
143 dmas = <&dma 0 3>, <&dma 0 3>;
144 dma-names = "rx", "tx";
145 };
146
147 ...
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