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
7 title: Rockchip I2S controller
8
9 description:
10 The I2S bus (Inter-IC sound bus) is a serial link for digital
11 audio data transfer between devices in the system.
12
13 maintainers:
14 - Heiko Stuebner <heiko@sntech.de>
15
16 properties:
17 compatible:
18 oneOf:
19 - const: rockchip,rk3066-i2s
20 - items:
21 - enum:
22 - rockchip,px30-i2s
23 - rockchip,rk1808-i2s
24 - rockchip,rk3036-i2s
25 - rockchip,rk3128-i2s
26 - rockchip,rk3188-i2s
27 - rockchip,rk3228-i2s
28 - rockchip,rk3288-i2s
29 - rockchip,rk3308-i2s
30 - rockchip,rk3328-i2s
31 - rockchip,rk3366-i2s
32 - rockchip,rk3368-i2s
33 - rockchip,rk3399-i2s
34 - rockchip,rv1126-i2s
35 - const: rockchip,rk3066-i2s
36
37 reg:
38 maxItems: 1
39
40 interrupts:
41 maxItems: 1
42
43 clocks:
44 items:
45 - description: clock for I2S controller
46 - description: clock for I2S BUS
47
48 clock-names:
49 items:
50 - const: i2s_clk
51 - const: i2s_hclk
52
53 dmas:
54 minItems: 1
55 maxItems: 2
56
57 dma-names:
58 oneOf:
59 - const: rx
60 - items:
61 - const: tx
62 - const: rx
63
64 pinctrl-names:
65 oneOf:
66 - const: default
67 - items:
68 - const: bclk_on
69 - const: bclk_off
70
71 power-domains:
72 maxItems: 1
73
74 reset-names:
75 items:
76 - const: reset-m
77 - const: reset-h
78
79 resets:
80 maxItems: 2
81
82 rockchip,capture-channels:
83 $ref: /schemas/types.yaml#/definitions/uint32
84 default: 2
85 description:
86 Max capture channels, if not set, 2 channels default.
87
88 rockchip,playback-channels:
89 $ref: /schemas/types.yaml#/definitions/uint32
90 default: 8
91 description:
92 Max playback channels, if not set, 8 channels default.
93
94 rockchip,grf:
95 $ref: /schemas/types.yaml#/definitions/phandle
96 description:
97 The phandle of the syscon node for the GRF register.
98 Required property for controllers which support multi channel
99 playback/capture.
100
101 "#sound-dai-cells":
102 const: 0
103
104 required:
105 - compatible
106 - reg
107 - interrupts
108 - clocks
109 - clock-names
110 - dmas
111 - dma-names
112 - "#sound-dai-cells"
113
114 additionalProperties: false
115
116 examples:
117 - |
118 #include <dt-bindings/clock/rk3288-cru.h>
119 #include <dt-bindings/interrupt-controller/arm-gic.h>
120 #include <dt-bindings/interrupt-controller/irq.h>
121 i2s@ff890000 {
122 compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
123 reg = <0xff890000 0x10000>;
124 interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
125 clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>;
126 clock-names = "i2s_clk", "i2s_hclk";
127 dmas = <&pdma1 0>, <&pdma1 1>;
128 dma-names = "tx", "rx";
129 rockchip,capture-channels = <2>;
130 rockchip,playback-channels = <8>;
131 #sound-dai-cells = <0>;
132 };
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