1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/fsl,qmc-audio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: QMC audio
8
9 maintainers:
10 - Herve Codina <herve.codina@bootlin.com>
11
12 description: |
13 The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
14 Controller) channels to transfer the audio data.
15 It provides several DAIs. For each DAI, the DAI is working in interleaved mode
16 if only one QMC channel is used by the DAI or it is working in non-interleaved
17 mode if several QMC channels are used by the DAI.
18
19 allOf:
20 - $ref: dai-common.yaml#
21
22 properties:
23 compatible:
24 const: fsl,qmc-audio
25
26 '#address-cells':
27 const: 1
28 '#size-cells':
29 const: 0
30 '#sound-dai-cells':
31 const: 1
32
33 patternProperties:
34 '^dai@([0-9]|[1-5][0-9]|6[0-3])$':
35 description:
36 A DAI managed by this controller
37 type: object
38 additionalProperties: false
39
40 properties:
41 reg:
42 minimum: 0
43 maximum: 63
44 description:
45 The DAI number
46
47 fsl,qmc-chan:
48 $ref: /schemas/types.yaml#/definitions/phandle-array
49 items:
50 items:
51 - description: phandle to QMC node
52 - description: Channel number
53 minItems: 1
54 description:
55 Should be a phandle/number pair list. The list of phandle to QMC node
56 and the QMC channel pair to use for this DAI.
57 If only one phandle/number pair is provided, this DAI works in
58 interleaved mode, i.e. audio channels for this DAI are interleaved in
59 the QMC channel. If more than one pair is provided, this DAI works
60 in non-interleave mode. In that case the first audio channel uses the
61 the first QMC channel, the second audio channel uses the second QMC
62 channel, etc...
63
64 required:
65 - reg
66 - fsl,qmc-chan
67
68 required:
69 - compatible
70 - '#address-cells'
71 - '#size-cells'
72 - '#sound-dai-cells'
73
74 additionalProperties: false
75
76 examples:
77 - |
78 audio_controller: audio-controller {
79 compatible = "fsl,qmc-audio";
80 #address-cells = <1>;
81 #size-cells = <0>;
82 #sound-dai-cells = <1>;
83 dai@16 {
84 reg = <16>;
85 fsl,qmc-chan = <&qmc 16>;
86 };
87 dai@17 {
88 reg = <17>;
89 fsl,qmc-chan = <&qmc 17>;
90 };
91 dai@18 {
92 reg = <18>;
93 /* Non-interleaved mode */
94 fsl,qmc-chan = <&qmc 18>, <&qmc 19>;
95 };
96 };
97
98 sound {
99 compatible = "simple-audio-card";
100 #address-cells = <1>;
101 #size-cells = <0>;
102 simple-audio-card,dai-link@0 {
103 reg = <0>;
104 format = "dsp_b";
105 cpu {
106 sound-dai = <&audio_controller 16>;
107 };
108 codec {
109 sound-dai = <&codec1>;
110 dai-tdm-slot-num = <4>;
111 dai-tdm-slot-width = <8>;
112 /* TS 3, 5, 7, 9 */
113 dai-tdm-slot-tx-mask = <0 0 0 1 0 1 0 1 0 1>;
114 dai-tdm-slot-rx-mask = <0 0 0 1 0 1 0 1 0 1>;
115 };
116 };
117 simple-audio-card,dai-link@1 {
118 reg = <1>;
119 format = "dsp_b";
120 cpu {
121 sound-dai = <&audio_controller 17>;
122 };
123 codec {
124 sound-dai = <&codec2>;
125 dai-tdm-slot-num = <4>;
126 dai-tdm-slot-width = <8>;
127 /* TS 2, 4, 6, 8 */
128 dai-tdm-slot-tx-mask = <0 0 1 0 1 0 1 0 1>;
129 dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>;
130 };
131 };
132 simple-audio-card,dai-link@2 {
133 reg = <2>;
134 format = "dsp_b";
135 cpu {
136 sound-dai = <&audio_controller 18>;
137 };
138 codec {
139 sound-dai = <&codec3>;
140 dai-tdm-slot-num = <2>;
141 dai-tdm-slot-width = <8>;
142 /* TS 9, 10 */
143 dai-tdm-slot-tx-mask = <0 0 0 0 0 0 0 0 0 1 1>;
144 dai-tdm-slot-rx-mask = <0 0 0 0 0 0 0 0 0 1 1>;
145 };
146 };
147 };
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