st,stm32-i2s.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/sound/st,stm32-i2s.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: STMicroelectronics STM32 SPI/I2S Controller
    8 
    9 maintainers:
   10   - Olivier Moysan <olivier.moysan@foss.st.com>
   11 
   12 description:
   13   The SPI/I2S block supports I2S/PCM protocols when configured on I2S mode.
   14   Only some SPI instances support I2S.
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - st,stm32h7-i2s
   20 
   21   "#sound-dai-cells":
   22     const: 0
   23 
   24   reg:
   25     maxItems: 1
   26 
   27   clocks:
   28     items:
   29       - description: clock feeding the peripheral bus interface.
   30       - description: clock feeding the internal clock generator.
   31       - description: I2S parent clock for sampling rates multiple of 8kHz.
   32       - description: I2S parent clock for sampling rates multiple of 11.025kHz.
   33 
   34   clock-names:
   35     items:
   36       - const: pclk
   37       - const: i2sclk
   38       - const: x8k
   39       - const: x11k
   40 
   41   interrupts:
   42     maxItems: 1
   43 
   44   dmas:
   45     items:
   46       - description: audio capture DMA.
   47       - description: audio playback DMA.
   48 
   49   dma-names:
   50     items:
   51       - const: rx
   52       - const: tx
   53 
   54   resets:
   55     maxItems: 1
   56 
   57   "#clock-cells":
   58     description: Configure the I2S device as MCLK clock provider.
   59     const: 0
   60 
   61 required:
   62   - compatible
   63   - "#sound-dai-cells"
   64   - reg
   65   - clocks
   66   - clock-names
   67   - interrupts
   68   - dmas
   69   - dma-names
   70 
   71 additionalProperties: false
   72 
   73 examples:
   74   - |
   75     #include <dt-bindings/interrupt-controller/arm-gic.h>
   76     #include <dt-bindings/clock/stm32mp1-clks.h>
   77     i2s2: audio-controller@4000b000 {
   78         compatible = "st,stm32h7-i2s";
   79         #sound-dai-cells = <0>;
   80         reg = <0x4000b000 0x400>;
   81         clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
   82         clock-names = "pclk", "i2sclk", "x8k", "x11k";
   83         interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
   84         dmas = <&dmamux1 39 0x400 0x01>,
   85                <&dmamux1 40 0x400 0x01>;
   86         dma-names = "rx", "tx";
   87         pinctrl-names = "default";
   88         pinctrl-0 = <&i2s2_pins_a>;
   89     };
   90 
   91 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/sound/st,stm32-i2s.yaml

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sys/contrib/device-tree/Bindings/sound/st,stm32-i2s.yaml