1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/mchp,i2s-mcc.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 enum:
28 - microchip,sam9x60-i2smcc
29 - microchip,sama7g5-i2smcc
30
31 reg:
32 maxItems: 1
33
34 interrupts:
35 maxItems: 1
36
37 clocks:
38 items:
39 - description: Peripheral Bus Clock
40 - description: Generic Clock (Optional). Should be set mostly when Master
41 Mode is required.
42 minItems: 1
43
44 clock-names:
45 items:
46 - const: pclk
47 - const: gclk
48 minItems: 1
49
50 dmas:
51 items:
52 - description: TX DMA Channel
53 - description: RX DMA Channel
54
55 dma-names:
56 items:
57 - const: tx
58 - const: rx
59
60 microchip,tdm-data-pair:
61 description:
62 Represents the DIN/DOUT pair pins that are used to receive/send
63 TDM data. It is optional and it is only needed if the controller
64 uses the TDM mode.
65 $ref: /schemas/types.yaml#/definitions/uint8
66 enum: [0, 1, 2, 3]
67 default: 0
68
69 if:
70 properties:
71 compatible:
72 const: microchip,sam9x60-i2smcc
73 then:
74 properties:
75 microchip,tdm-data-pair: false
76
77 required:
78 - "#sound-dai-cells"
79 - compatible
80 - reg
81 - interrupts
82 - clocks
83 - clock-names
84 - dmas
85 - dma-names
86
87 additionalProperties: false
88
89 examples:
90 - |
91 #include <dt-bindings/dma/at91.h>
92 #include <dt-bindings/interrupt-controller/arm-gic.h>
93
94 i2s@f001c000 {
95 #sound-dai-cells = <0>;
96 compatible = "microchip,sam9x60-i2smcc";
97 reg = <0xf001c000 0x100>;
98 interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
99 dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
100 AT91_XDMAC_DT_PERID(36))>,
101 <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
102 AT91_XDMAC_DT_PERID(37))>;
103 dma-names = "tx", "rx";
104 clocks = <&i2s_clk>, <&i2s_gclk>;
105 clock-names = "pclk", "gclk";
106 pinctrl-names = "default";
107 pinctrl-0 = <&pinctrl_i2s_default>;
108 };
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