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