Bindings/sound/fsl,micfil.yaml

   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       - fsl,imx93-micfil
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     items:
  28       - description: Digital Microphone interface interrupt
  29       - description: Digital Microphone interface error interrupt
  30       - description: voice activity detector event interrupt
  31       - description: voice activity detector error interrupt
  32
  33   dmas:
  34     items:
  35       - description: DMA controller phandle and request line for RX
  36
  37   dma-names:
  38     items:
  39       - const: rx
  40
  41   clocks:
  42     items:
  43       - description: The ipg clock for register access
  44       - description: internal micfil clock
  45       - description: PLL clock source for 8kHz series
  46       - description: PLL clock source for 11kHz series
  47       - description: External clock 3
  48     minItems: 2
  49
  50   clock-names:
  51     items:
  52       - const: ipg_clk
  53       - const: ipg_clk_app
  54       - const: pll8k
  55       - const: pll11k
  56       - const: clkext3
  57     minItems: 2
  58
  59   "#sound-dai-cells":
  60     const: 0
  61
  62 required:
  63   - compatible
  64   - reg
  65   - interrupts
  66   - dmas
  67   - dma-names
  68   - clocks
  69   - clock-names
  70
  71 additionalProperties: false
  72
  73 examples:
  74   - |
  75     #include <dt-bindings/interrupt-controller/arm-gic.h>
  76     #include <dt-bindings/clock/imx8mm-clock.h>
  77     micfil: audio-controller@30080000 {
  78         compatible = "fsl,imx8mm-micfil";
  79         reg = <0x30080000 0x10000>;
  80         interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
  81                      <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
  82                      <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
  83                      <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
  84         clocks = <&clk IMX8MM_CLK_PDM_IPG>,
  85                  <&clk IMX8MM_CLK_PDM_ROOT>;
  86         clock-names = "ipg_clk", "ipg_clk_app";
  87         dmas = <&sdma2 24 25 0>;
  88         dma-names = "rx";
  89     };