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,rk3328-i2s 28 - rockchip,rk3366-i2s 29 - rockchip,rk3368-i2s 30 - rockchip,rk3399-i2s 31 - const: rockchip,rk3066-i2s 32 33 reg: 34 maxItems: 1 35 36 interrupts: 37 maxItems: 1 38 39 clocks: 40 items: 41 - description: clock for I2S controller 42 - description: clock for I2S BUS 43 44 clock-names: 45 items: 46 - const: i2s_clk 47 - const: i2s_hclk 48 49 dmas: 50 items: 51 - description: TX DMA Channel 52 - description: RX DMA Channel 53 54 dma-names: 55 items: 56 - const: tx 57 - const: rx 58 59 rockchip,capture-channels: 60 $ref: /schemas/types.yaml#/definitions/uint32 61 default: 2 62 description: 63 Max capture channels, if not set, 2 channels default. 64 65 rockchip,playback-channels: 66 $ref: /schemas/types.yaml#/definitions/uint32 67 default: 8 68 description: 69 Max playback channels, if not set, 8 channels default. 70 71 rockchip,grf: 72 $ref: /schemas/types.yaml#/definitions/phandle 73 description: 74 The phandle of the syscon node for the GRF register. 75 Required property for controllers which support multi channel 76 playback/capture. 77 78 "#sound-dai-cells": 79 const: 0 80 81required: 82 - compatible 83 - reg 84 - interrupts 85 - clocks 86 - clock-names 87 - dmas 88 - dma-names 89 - "#sound-dai-cells" 90 91additionalProperties: false 92 93examples: 94 - | 95 #include <dt-bindings/clock/rk3288-cru.h> 96 #include <dt-bindings/interrupt-controller/arm-gic.h> 97 #include <dt-bindings/interrupt-controller/irq.h> 98 i2s@ff890000 { 99 compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; 100 reg = <0xff890000 0x10000>; 101 interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; 102 clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>; 103 clock-names = "i2s_clk", "i2s_hclk"; 104 dmas = <&pdma1 0>, <&pdma1 1>; 105 dma-names = "tx", "rx"; 106 rockchip,capture-channels = <2>; 107 rockchip,playback-channels = <8>; 108 #sound-dai-cells = <0>; 109 }; 110