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ASoC: dt-bindings: Convert mxs-saif.txt to fsl,saif.yaml (imx28 saif)
The 'fsl,imx28-saif' compatible has already the mxs-saif.txt description. This patch converts (and removes it) this file to fsl,saif.yaml (to follow current fsl convention). Changes for the mxs-saif.txt: - Adds 'clocks', '#clock-cells' and '#sound-dai-cells' properties - Provide device description Signed-off-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20240828092709.2626359-1-lukma@denx.de Signed-off-by: Mark Brown <broonie@kernel.org>
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Documentation/devicetree/bindings/sound/fsl,saif.yaml
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Documentation/devicetree/bindings/sound/fsl,saif.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/fsl,saif.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Freescale MXS Serial Audio Interface (SAIF)
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maintainers:
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- Lukasz Majewski <lukma@denx.de>
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allOf:
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- $ref: dai-common.yaml#
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description:
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The SAIF is based on I2S module that is used to communicate with audio codecs,
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but only with half-duplex manner (i.e. it can either transmit or receive PCM
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audio).
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properties:
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compatible:
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const: fsl,imx28-saif
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reg:
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maxItems: 1
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"#sound-dai-cells":
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const: 0
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interrupts:
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maxItems: 1
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dmas:
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maxItems: 1
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dma-names:
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const: rx-tx
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"#clock-cells":
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description: Configure the I2S device as MCLK clock provider.
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const: 0
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clocks:
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maxItems: 1
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fsl,saif-master:
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description: Indicate that saif is a slave and its phandle points to master
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$ref: /schemas/types.yaml#/definitions/phandle
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required:
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- compatible
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- reg
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- "#sound-dai-cells"
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- interrupts
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- dmas
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- dma-names
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- clocks
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unevaluatedProperties: false
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examples:
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- |
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saif0: saif@80042000 {
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compatible = "fsl,imx28-saif";
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reg = <0x80042000 2000>;
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#sound-dai-cells = <0>;
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interrupts = <59>;
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dmas = <&dma_apbx 4>;
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dma-names = "rx-tx";
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#clock-cells = <0>;
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clocks = <&clks 53>;
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};
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- |
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saif1: saif@80046000 {
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compatible = "fsl,imx28-saif";
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reg = <0x80046000 2000>;
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#sound-dai-cells = <0>;
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interrupts = <58>;
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dmas = <&dma_apbx 5>;
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dma-names = "rx-tx";
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clocks = <&clks 53>;
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fsl,saif-master = <&saif0>;
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};
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* Freescale MXS Serial Audio Interface (SAIF)
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Required properties:
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- compatible: Should be "fsl,<chip>-saif"
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- reg: Should contain registers location and length
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- interrupts: Should contain ERROR interrupt number
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- dmas: DMA specifier, consisting of a phandle to DMA controller node
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and SAIF DMA channel ID.
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Refer to dma.txt and fsl-mxs-dma.txt for details.
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- dma-names: Must be "rx-tx".
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Optional properties:
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- fsl,saif-master: phandle to the master SAIF. It's only required for
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the slave SAIF.
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Note: Each SAIF controller should have an alias correctly numbered
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in "aliases" node.
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Example:
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aliases {
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saif0 = &saif0;
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saif1 = &saif1;
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};
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saif0: saif@80042000 {
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compatible = "fsl,imx28-saif";
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reg = <0x80042000 2000>;
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interrupts = <59>;
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dmas = <&dma_apbx 4>;
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dma-names = "rx-tx";
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};
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saif1: saif@80046000 {
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compatible = "fsl,imx28-saif";
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reg = <0x80046000 2000>;
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interrupts = <58>;
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dmas = <&dma_apbx 5>;
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dma-names = "rx-tx";
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fsl,saif-master = <&saif0>;
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};
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