xref: /linux/Documentation/devicetree/bindings/sound/microchip,sama7g5-i2smcc.yaml (revision 537c2e91d3549e5d6020bb0576cf9b54a845255f) 
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
7title: Microchip I2S Multi-Channel Controller
8
9maintainers:
10  - Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
11
12description:
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
22properties:
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
74allOf:
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
84required:
85  - "#sound-dai-cells"
86  - compatible
87  - reg
88  - interrupts
89  - clocks
90  - clock-names
91  - dmas
92  - dma-names
93
94unevaluatedProperties: false
95
96examples:
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    };
116