1NXP MICFIL Digital Audio Interface (MICFIL). 2 3The MICFIL digital interface provides a 16-bit audio signal from a PDM 4microphone bitstream in a configurable output sampling rate. 5 6Required properties: 7 8 - compatible : Compatible list, contains "fsl,imx8mm-micfil" 9 10 - reg : Offset and length of the register set for the device. 11 12 - interrupts : Contains the micfil interrupts. 13 14 - clocks : Must contain an entry for each entry in clock-names. 15 16 - clock-names : Must include the "ipg_clk" for register access and 17 "ipg_clk_app" for internal micfil clock. 18 19 - dmas : Generic dma devicetree binding as described in 20 Documentation/devicetree/bindings/dma/dma.txt. 21 22Example: 23micfil: micfil@30080000 { 24 compatible = "fsl,imx8mm-micfil"; 25 reg = <0x0 0x30080000 0x0 0x10000>; 26 interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>, 27 <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>; 28 clocks = <&clk IMX8MM_CLK_PDM_IPG>, 29 <&clk IMX8MM_CLK_PDM_ROOT>; 30 clock-names = "ipg_clk", "ipg_clk_app"; 31 dmas = <&sdma2 24 26 0x80000000>; 32}; 33