xref: /linux/Documentation/devicetree/bindings/sound/fsl,micfil.yaml (revision 36a1818f5a1e50b805317ba13f827067d50f6970) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/fsl,micfil.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP MICFIL Digital Audio Interface (MICFIL)
8
9maintainers:
10  - Shengjiu Wang <shengjiu.wang@nxp.com>
11
12description: |
13  The MICFIL digital interface provides a 16-bit or 24-bit audio signal
14  from a PDM microphone bitstream in a configurable output sampling rate.
15
16properties:
17  compatible:
18    oneOf:
19      - items:
20          - enum:
21              - fsl,imx95-micfil
22          - const: fsl,imx93-micfil
23
24      - enum:
25          - fsl,imx8mm-micfil
26          - fsl,imx8mp-micfil
27          - fsl,imx93-micfil
28
29  reg:
30    maxItems: 1
31
32  interrupts:
33    items:
34      - description: Digital Microphone interface interrupt
35      - description: Digital Microphone interface error interrupt
36      - description: voice activity detector event interrupt
37      - description: voice activity detector error interrupt
38
39  dmas:
40    items:
41      - description: DMA controller phandle and request line for RX
42
43  dma-names:
44    items:
45      - const: rx
46
47  clocks:
48    items:
49      - description: The ipg clock for register access
50      - description: internal micfil clock
51      - description: PLL clock source for 8kHz series
52      - description: PLL clock source for 11kHz series
53      - description: External clock 3
54    minItems: 2
55
56  clock-names:
57    items:
58      - const: ipg_clk
59      - const: ipg_clk_app
60      - const: pll8k
61      - const: pll11k
62      - const: clkext3
63    minItems: 2
64
65  "#sound-dai-cells":
66    const: 0
67
68required:
69  - compatible
70  - reg
71  - interrupts
72  - dmas
73  - dma-names
74  - clocks
75  - clock-names
76
77additionalProperties: false
78
79examples:
80  - |
81    #include <dt-bindings/interrupt-controller/arm-gic.h>
82    #include <dt-bindings/clock/imx8mm-clock.h>
83    micfil: audio-controller@30080000 {
84        compatible = "fsl,imx8mm-micfil";
85        reg = <0x30080000 0x10000>;
86        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
87                     <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
88                     <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
89                     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
90        clocks = <&clk IMX8MM_CLK_PDM_IPG>,
91                 <&clk IMX8MM_CLK_PDM_ROOT>;
92        clock-names = "ipg_clk", "ipg_clk_app";
93        dmas = <&sdma2 24 25 0>;
94        dma-names = "rx";
95    };
96