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# 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
power-domains:
maxItems: 1
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>;
};
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