133 lines
2.9 KiB
YAML
133 lines
2.9 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/rockchip-i2s.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Rockchip I2S controller
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description:
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The I2S bus (Inter-IC sound bus) is a serial link for digital
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audio data transfer between devices in the system.
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maintainers:
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- Heiko Stuebner <heiko@sntech.de>
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properties:
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compatible:
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oneOf:
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- const: rockchip,rk3066-i2s
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- items:
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- enum:
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- rockchip,px30-i2s
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- rockchip,rk1808-i2s
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- rockchip,rk3036-i2s
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- rockchip,rk3128-i2s
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- rockchip,rk3188-i2s
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- rockchip,rk3228-i2s
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- rockchip,rk3288-i2s
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- rockchip,rk3308-i2s
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- rockchip,rk3328-i2s
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- rockchip,rk3366-i2s
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- rockchip,rk3368-i2s
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- rockchip,rk3399-i2s
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- rockchip,rv1126-i2s
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- const: rockchip,rk3066-i2s
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: clock for I2S controller
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- description: clock for I2S BUS
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clock-names:
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items:
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- const: i2s_clk
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- const: i2s_hclk
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dmas:
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minItems: 1
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maxItems: 2
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dma-names:
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oneOf:
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- const: rx
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- items:
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- const: tx
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- const: rx
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pinctrl-names:
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oneOf:
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- const: default
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- items:
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- const: bclk_on
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- const: bclk_off
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power-domains:
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maxItems: 1
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reset-names:
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items:
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- const: reset-m
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- const: reset-h
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resets:
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maxItems: 2
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rockchip,capture-channels:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 2
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description:
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Max capture channels, if not set, 2 channels default.
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rockchip,playback-channels:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 8
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description:
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Max playback channels, if not set, 8 channels default.
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rockchip,grf:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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The phandle of the syscon node for the GRF register.
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Required property for controllers which support multi channel
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playback/capture.
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"#sound-dai-cells":
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const: 0
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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- dmas
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- dma-names
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- "#sound-dai-cells"
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/rk3288-cru.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2s@ff890000 {
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compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
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reg = <0xff890000 0x10000>;
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interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>;
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clock-names = "i2s_clk", "i2s_hclk";
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dmas = <&pdma1 0>, <&pdma1 1>;
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dma-names = "tx", "rx";
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rockchip,capture-channels = <2>;
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rockchip,playback-channels = <8>;
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#sound-dai-cells = <0>;
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};
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