xref: /freebsd/sys/contrib/device-tree/Bindings/sound/mchp,i2s-mcc.yaml (revision 18054d0220cfc8df9c9568c437bd6fbb59d53c3c) 
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
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    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
69if:
70  properties:
71    compatible:
72      const: microchip,sam9x60-i2smcc
73then:
74  properties:
75    microchip,tdm-data-pair: false
76
77required:
78  - "#sound-dai-cells"
79  - compatible
80  - reg
81  - interrupts
82  - clocks
83  - clock-names
84  - dmas
85  - dma-names
86
87additionalProperties: false
88
89examples:
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    };
109