33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
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NXP MICFIL Digital Audio Interface (MICFIL).
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The MICFIL digital interface provides a 16-bit audio signal from a PDM
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microphone bitstream in a configurable output sampling rate.
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Required properties:
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- compatible : Compatible list, contains "fsl,imx8mm-micfil"
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- reg : Offset and length of the register set for the device.
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- interrupts : Contains the micfil interrupts.
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- clocks : Must contain an entry for each entry in clock-names.
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- clock-names : Must include the "ipg_clk" for register access and
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"ipg_clk_app" for internal micfil clock.
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- dmas : Generic dma devicetree binding as described in
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Documentation/devicetree/bindings/dma/dma.txt.
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Example:
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micfil: micfil@30080000 {
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compatible = "fsl,imx8mm-micfil";
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reg = <0x0 0x30080000 0x0 0x10000>;
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interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&clk IMX8MM_CLK_PDM_IPG>,
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<&clk IMX8MM_CLK_PDM_ROOT>;
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clock-names = "ipg_clk", "ipg_clk_app";
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dmas = <&sdma2 24 26 0x80000000>;
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};
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