NXP MICFIL Digital Audio Interface (MICFIL). The MICFIL digital interface provides a 16-bit audio signal from a PDM microphone bitstream in a configurable output sampling rate. Required properties: - compatible : Compatible list, contains "fsl,imx8mm-micfil" - reg : Offset and length of the register set for the device. - interrupts : Contains the micfil interrupts. - clocks : Must contain an entry for each entry in clock-names. - clock-names : Must include the "ipg_clk" for register access and "ipg_clk_app" for internal micfil clock. - dmas : Generic dma devicetree binding as described in Documentation/devicetree/bindings/dma/dma.txt. Example: micfil: micfil@30080000 { compatible = "fsl,imx8mm-micfil"; reg = <0x0 0x30080000 0x0 0x10000>; interrupts = , ; clocks = <&clk IMX8MM_CLK_PDM_IPG>, <&clk IMX8MM_CLK_PDM_ROOT>; clock-names = "ipg_clk", "ipg_clk_app"; dmas = <&sdma2 24 26 0x80000000>; };