| # 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 <heiko@sntech.de> |
| |
| 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,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: |
| items: |
| - description: TX DMA Channel |
| - description: RX DMA Channel |
| |
| dma-names: |
| items: |
| - const: tx |
| - const: rx |
| |
| rockchip,capture-channels: |
| allOf: |
| - $ref: /schemas/types.yaml#/definitions/uint32 |
| default: 2 |
| description: |
| Max capture channels, if not set, 2 channels default. |
| |
| rockchip,playback-channels: |
| allOf: |
| - $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 <dt-bindings/clock/rk3288-cru.h> |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| i2s@ff890000 { |
| compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; |
| reg = <0xff890000 0x10000>; |
| interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; |
| 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>; |
| }; |