# SPDX-License-Identifier: GPL-2.0 %YAML 1.2 --- $id: http://devicetree.org/schemas/sound/rockchip-i2s.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Rockchip I2S controller description: The I2S bus (Inter-IC sound bus) is a serial link for digital audio data transfer between devices in the system. maintainers: - Heiko Stuebner properties: compatible: oneOf: - const: rockchip,rk3066-i2s - items: - enum: - rockchip,px30-i2s - rockchip,rk3036-i2s - rockchip,rk3188-i2s - rockchip,rk3228-i2s - rockchip,rk3288-i2s - rockchip,rk3308-i2s - rockchip,rk3328-i2s - rockchip,rk3366-i2s - rockchip,rk3368-i2s - rockchip,rk3399-i2s - const: rockchip,rk3066-i2s reg: maxItems: 1 interrupts: maxItems: 1 clocks: items: - description: clock for I2S controller - description: clock for I2S BUS clock-names: items: - const: i2s_clk - const: i2s_hclk dmas: minItems: 1 maxItems: 2 dma-names: oneOf: - const: rx - items: - const: tx - const: rx power-domains: maxItems: 1 rockchip,capture-channels: $ref: /schemas/types.yaml#/definitions/uint32 default: 2 description: Max capture channels, if not set, 2 channels default. rockchip,playback-channels: $ref: /schemas/types.yaml#/definitions/uint32 default: 8 description: Max playback channels, if not set, 8 channels default. rockchip,grf: $ref: /schemas/types.yaml#/definitions/phandle description: The phandle of the syscon node for the GRF register. Required property for controllers which support multi channel playback/capture. "#sound-dai-cells": const: 0 required: - compatible - reg - interrupts - clocks - clock-names - dmas - dma-names - "#sound-dai-cells" additionalProperties: false examples: - | #include #include #include i2s@ff890000 { compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; reg = <0xff890000 0x10000>; interrupts = ; clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>; clock-names = "i2s_clk", "i2s_hclk"; dmas = <&pdma1 0>, <&pdma1 1>; dma-names = "tx", "rx"; rockchip,capture-channels = <2>; rockchip,playback-channels = <8>; #sound-dai-cells = <0>; };