The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/sound/fsl,micfil.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/fsl,micfil.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: NXP MICFIL Digital Audio Interface (MICFIL)
    8 
    9 maintainers:
   10   - Shengjiu Wang <shengjiu.wang@nxp.com>
   11 
   12 description: |
   13   The MICFIL digital interface provides a 16-bit or 24-bit audio signal
   14   from a PDM microphone bitstream in a configurable output sampling rate.
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - fsl,imx8mm-micfil
   20       - fsl,imx8mp-micfil
   21 
   22   reg:
   23     maxItems: 1
   24 
   25   interrupts:
   26     items:
   27       - description: Digital Microphone interface interrupt
   28       - description: Digital Microphone interface error interrupt
   29       - description: voice activity detector event interrupt
   30       - description: voice activity detector error interrupt
   31 
   32   dmas:
   33     items:
   34       - description: DMA controller phandle and request line for RX
   35 
   36   dma-names:
   37     items:
   38       - const: rx
   39 
   40   clocks:
   41     items:
   42       - description: The ipg clock for register access
   43       - description: internal micfil clock
   44       - description: PLL clock source for 8kHz series
   45       - description: PLL clock source for 11kHz series
   46       - description: External clock 3
   47     minItems: 2
   48 
   49   clock-names:
   50     items:
   51       - const: ipg_clk
   52       - const: ipg_clk_app
   53       - const: pll8k
   54       - const: pll11k
   55       - const: clkext3
   56     minItems: 2
   57 
   58 required:
   59   - compatible
   60   - reg
   61   - interrupts
   62   - dmas
   63   - dma-names
   64   - clocks
   65   - clock-names
   66 
   67 additionalProperties: false
   68 
   69 examples:
   70   - |
   71     #include <dt-bindings/interrupt-controller/arm-gic.h>
   72     #include <dt-bindings/clock/imx8mm-clock.h>
   73     micfil: audio-controller@30080000 {
   74         compatible = "fsl,imx8mm-micfil";
   75         reg = <0x30080000 0x10000>;
   76         interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
   77                      <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
   78                      <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
   79                      <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
   80         clocks = <&clk IMX8MM_CLK_PDM_IPG>,
   81                  <&clk IMX8MM_CLK_PDM_ROOT>;
   82         clock-names = "ipg_clk", "ipg_clk_app";
   83         dmas = <&sdma2 24 25 0>;
   84         dma-names = "rx";
   85     };

Cache object: a241458080eed8b0959c853344ecdb02


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