401ec2b887
When linking the STM32 I2S to another DAI component, according to audio graph cards bindings, an OF graph port property is expected in the node. Document the port property. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230606115605.1633595-2-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
106 lines
2.3 KiB
YAML
106 lines
2.3 KiB
YAML
# 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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$id: http://devicetree.org/schemas/sound/st,stm32-i2s.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: STMicroelectronics STM32 SPI/I2S Controller
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maintainers:
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- Olivier Moysan <olivier.moysan@foss.st.com>
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description:
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The SPI/I2S block supports I2S/PCM protocols when configured on I2S mode.
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Only some SPI instances support I2S.
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allOf:
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- $ref: dai-common.yaml#
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properties:
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compatible:
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enum:
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- st,stm32h7-i2s
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"#sound-dai-cells":
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const: 0
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reg:
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maxItems: 1
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clocks:
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items:
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- description: clock feeding the peripheral bus interface.
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- description: clock feeding the internal clock generator.
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- description: I2S parent clock for sampling rates multiple of 8kHz.
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- description: I2S parent clock for sampling rates multiple of 11.025kHz.
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clock-names:
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items:
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- const: pclk
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- const: i2sclk
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- const: x8k
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- const: x11k
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interrupts:
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maxItems: 1
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dmas:
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items:
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- description: audio capture DMA.
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- description: audio playback DMA.
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dma-names:
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items:
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- const: rx
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- const: tx
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resets:
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maxItems: 1
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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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port:
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$ref: audio-graph-port.yaml#
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unevaluatedProperties: false
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required:
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- compatible
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- "#sound-dai-cells"
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- reg
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- clocks
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- clock-names
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- interrupts
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- dmas
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- dma-names
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/clock/stm32mp1-clks.h>
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i2s2: audio-controller@4000b000 {
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compatible = "st,stm32h7-i2s";
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#sound-dai-cells = <0>;
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reg = <0x4000b000 0x400>;
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clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
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clock-names = "pclk", "i2sclk", "x8k", "x11k";
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interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
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dmas = <&dmamux1 39 0x400 0x01>,
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<&dmamux1 40 0x400 0x01>;
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dma-names = "rx", "tx";
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pinctrl-names = "default";
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pinctrl-0 = <&i2s2_pins_a>;
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/* assume audio-graph */
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port {
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codec_endpoint: endpoint {
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remote-endpoint = <&codec_endpoint>;
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};
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};
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};
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...
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