1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/rockchip-i2s.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Rockchip I2S controller
8
9description:
10  The I2S bus (Inter-IC sound bus) is a serial link for digital
11  audio data transfer between devices in the system.
12
13maintainers:
14  - Heiko Stuebner <heiko@sntech.de>
15
16properties:
17  compatible:
18    oneOf:
19      - const: rockchip,rk3066-i2s
20      - items:
21          - enum:
22              - rockchip,px30-i2s
23              - rockchip,rk3036-i2s
24              - rockchip,rk3188-i2s
25              - rockchip,rk3228-i2s
26              - rockchip,rk3288-i2s
27              - rockchip,rk3308-i2s
28              - rockchip,rk3328-i2s
29              - rockchip,rk3366-i2s
30              - rockchip,rk3368-i2s
31              - rockchip,rk3399-i2s
32          - const: rockchip,rk3066-i2s
33
34  reg:
35    maxItems: 1
36
37  interrupts:
38    maxItems: 1
39
40  clocks:
41    items:
42      - description: clock for I2S controller
43      - description: clock for I2S BUS
44
45  clock-names:
46    items:
47      - const: i2s_clk
48      - const: i2s_hclk
49
50  dmas:
51    minItems: 1
52    maxItems: 2
53
54  dma-names:
55    oneOf:
56      - const: rx
57      - items:
58          - const: tx
59          - const: rx
60
61  power-domains:
62    maxItems: 1
63
64  reset-names:
65    items:
66      - const: reset-m
67      - const: reset-h
68
69  resets:
70    maxItems: 2
71
72  rockchip,capture-channels:
73    $ref: /schemas/types.yaml#/definitions/uint32
74    default: 2
75    description:
76      Max capture channels, if not set, 2 channels default.
77
78  rockchip,playback-channels:
79    $ref: /schemas/types.yaml#/definitions/uint32
80    default: 8
81    description:
82      Max playback channels, if not set, 8 channels default.
83
84  rockchip,grf:
85    $ref: /schemas/types.yaml#/definitions/phandle
86    description:
87      The phandle of the syscon node for the GRF register.
88      Required property for controllers which support multi channel
89      playback/capture.
90
91  "#sound-dai-cells":
92    const: 0
93
94required:
95  - compatible
96  - reg
97  - interrupts
98  - clocks
99  - clock-names
100  - dmas
101  - dma-names
102  - "#sound-dai-cells"
103
104additionalProperties: false
105
106examples:
107  - |
108    #include <dt-bindings/clock/rk3288-cru.h>
109    #include <dt-bindings/interrupt-controller/arm-gic.h>
110    #include <dt-bindings/interrupt-controller/irq.h>
111    i2s@ff890000 {
112      compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
113      reg = <0xff890000 0x10000>;
114      interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
115      clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>;
116      clock-names = "i2s_clk", "i2s_hclk";
117      dmas = <&pdma1 0>, <&pdma1 1>;
118      dma-names = "tx", "rx";
119      rockchip,capture-channels = <2>;
120      rockchip,playback-channels = <8>;
121      #sound-dai-cells = <0>;
122    };
123