xref: /linux/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
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
16allOf:
17  - $ref: dai-common.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - const: rockchip,rk3066-i2s
23      - items:
24          - enum:
25              - rockchip,px30-i2s
26              - rockchip,rk1808-i2s
27              - rockchip,rk3036-i2s
28              - rockchip,rk3128-i2s
29              - rockchip,rk3188-i2s
30              - rockchip,rk3228-i2s
31              - rockchip,rk3288-i2s
32              - rockchip,rk3308-i2s
33              - rockchip,rk3328-i2s
34              - rockchip,rk3366-i2s
35              - rockchip,rk3368-i2s
36              - rockchip,rk3399-i2s
37              - rockchip,rk3588-i2s
38              - rockchip,rv1126-i2s
39          - const: rockchip,rk3066-i2s
40
41  reg:
42    maxItems: 1
43
44  interrupts:
45    maxItems: 1
46
47  clocks:
48    items:
49      - description: clock for I2S controller
50      - description: clock for I2S BUS
51
52  clock-names:
53    items:
54      - const: i2s_clk
55      - const: i2s_hclk
56
57  dmas:
58    minItems: 1
59    maxItems: 2
60
61  dma-names:
62    oneOf:
63      - const: rx
64      - items:
65          - const: tx
66          - const: rx
67
68  pinctrl-names:
69    oneOf:
70      - const: default
71      - items:
72          - const: bclk_on
73          - const: bclk_off
74
75  power-domains:
76    maxItems: 1
77
78  reset-names:
79    items:
80      - const: reset-m
81      - const: reset-h
82
83  resets:
84    maxItems: 2
85
86  port:
87    $ref: audio-graph-port.yaml#
88    unevaluatedProperties: false
89
90  rockchip,capture-channels:
91    $ref: /schemas/types.yaml#/definitions/uint32
92    default: 2
93    description:
94      Max capture channels, if not set, 2 channels default.
95
96  rockchip,playback-channels:
97    $ref: /schemas/types.yaml#/definitions/uint32
98    default: 8
99    description:
100      Max playback channels, if not set, 8 channels default.
101
102  rockchip,grf:
103    $ref: /schemas/types.yaml#/definitions/phandle
104    description:
105      The phandle of the syscon node for the GRF register.
106      Required property for controllers which support multi channel
107      playback/capture.
108
109  "#sound-dai-cells":
110    const: 0
111
112required:
113  - compatible
114  - reg
115  - interrupts
116  - clocks
117  - clock-names
118  - dmas
119  - dma-names
120  - "#sound-dai-cells"
121
122unevaluatedProperties: false
123
124examples:
125  - |
126    #include <dt-bindings/clock/rk3288-cru.h>
127    #include <dt-bindings/interrupt-controller/arm-gic.h>
128    #include <dt-bindings/interrupt-controller/irq.h>
129    i2s@ff890000 {
130      compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
131      reg = <0xff890000 0x10000>;
132      interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
133      clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>;
134      clock-names = "i2s_clk", "i2s_hclk";
135      dmas = <&pdma1 0>, <&pdma1 1>;
136      dma-names = "tx", "rx";
137      rockchip,capture-channels = <2>;
138      rockchip,playback-channels = <8>;
139      #sound-dai-cells = <0>;
140    };
141