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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 = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MM_CLK_PDM_IPG>,
<&clk IMX8MM_CLK_PDM_ROOT>;
clock-names = "ipg_clk", "ipg_clk_app";
dmas = <&sdma2 24 26 0x80000000>;
};
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