86 lines
2.2 KiB
YAML
86 lines
2.2 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/fsl,micfil.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP MICFIL Digital Audio Interface (MICFIL)
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maintainers:
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- Shengjiu Wang <shengjiu.wang@nxp.com>
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description: |
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The MICFIL digital interface provides a 16-bit or 24-bit audio signal
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from a PDM microphone bitstream in a configurable output sampling rate.
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properties:
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compatible:
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enum:
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- fsl,imx8mm-micfil
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- fsl,imx8mp-micfil
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reg:
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maxItems: 1
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interrupts:
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items:
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- description: Digital Microphone interface interrupt
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- description: Digital Microphone interface error interrupt
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- description: voice activity detector event interrupt
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- description: voice activity detector error interrupt
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dmas:
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items:
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- description: DMA controller phandle and request line for RX
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dma-names:
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items:
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- const: rx
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clocks:
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items:
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- description: The ipg clock for register access
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- description: internal micfil clock
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- description: PLL clock source for 8kHz series
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- description: PLL clock source for 11kHz series
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- description: External clock 3
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minItems: 2
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clock-names:
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items:
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- const: ipg_clk
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- const: ipg_clk_app
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- const: pll8k
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- const: pll11k
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- const: clkext3
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minItems: 2
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required:
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- compatible
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- reg
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- interrupts
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- dmas
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- dma-names
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- clocks
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- clock-names
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/clock/imx8mm-clock.h>
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micfil: audio-controller@30080000 {
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compatible = "fsl,imx8mm-micfil";
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reg = <0x30080000 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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<GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 45 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 25 0>;
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dma-names = "rx";
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};
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