1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/microchip,sama7g5-i2smcc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Microchip I2S Multi-Channel Controller
8
9 maintainers:
10 - Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
11
12 description:
13 The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and
14 supports a Time Division Multiplexed (TDM) interface with external
15 multi-channel audio codecs. It consists of a receiver, a transmitter and a
16 common clock generator that can be enabled separately to provide Adapter,
17 Client or Controller modes with receiver and/or transmitter active.
18 On later I2SMCC versions (starting with Microchip's SAMA7G5) I2S
19 multi-channel is supported by using multiple data pins, output and
20 input, without TDM.
21
22 properties:
23 "#sound-dai-cells":
24 const: 0
25
26 compatible:
27 oneOf:
28 - enum:
29 - microchip,sam9x60-i2smcc
30 - microchip,sama7g5-i2smcc
31 - items:
32 - enum:
33 - microchip,sam9x7-i2smcc
34 - const: microchip,sam9x60-i2smcc
35
36 reg:
37 maxItems: 1
38
39 interrupts:
40 maxItems: 1
41
42 clocks:
43 items:
44 - description: Peripheral Bus Clock
45 - description: Generic Clock (Optional). Should be set mostly when Master
46 Mode is required.
47 minItems: 1
48
49 clock-names:
50 items:
51 - const: pclk
52 - const: gclk
53 minItems: 1
54
55 dmas:
56 items:
57 - description: TX DMA Channel
58 - description: RX DMA Channel
59
60 dma-names:
61 items:
62 - const: tx
63 - const: rx
64
65 microchip,tdm-data-pair:
66 description:
67 Represents the DIN/DOUT pair pins that are used to receive/send
68 TDM data. It is optional and it is only needed if the controller
69 uses the TDM mode.
70 $ref: /schemas/types.yaml#/definitions/uint8
71 enum: [0, 1, 2, 3]
72 default: 0
73
74 allOf:
75 - $ref: dai-common.yaml#
76 - if:
77 properties:
78 compatible:
79 const: microchip,sam9x60-i2smcc
80 then:
81 properties:
82 microchip,tdm-data-pair: false
83
84 required:
85 - "#sound-dai-cells"
86 - compatible
87 - reg
88 - interrupts
89 - clocks
90 - clock-names
91 - dmas
92 - dma-names
93
94 unevaluatedProperties: false
95
96 examples:
97 - |
98 #include <dt-bindings/dma/at91.h>
99 #include <dt-bindings/interrupt-controller/arm-gic.h>
100
101 i2s@f001c000 {
102 #sound-dai-cells = <0>;
103 compatible = "microchip,sam9x60-i2smcc";
104 reg = <0xf001c000 0x100>;
105 interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
106 dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
107 AT91_XDMAC_DT_PERID(36))>,
108 <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
109 AT91_XDMAC_DT_PERID(37))>;
110 dma-names = "tx", "rx";
111 clocks = <&i2s_clk>, <&i2s_gclk>;
112 clock-names = "pclk", "gclk";
113 pinctrl-names = "default";
114 pinctrl-0 = <&pinctrl_i2s_default>;
115 };
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