2020-02-07 12:03:45 +00:00
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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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$id: http://devicetree.org/schemas/sound/st,stm32-i2s.yaml#
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$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@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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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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2021-02-05 10:44:03 +00:00
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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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2020-02-07 12:03:45 +00:00
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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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additionalProperties: 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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};
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...
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