| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | # Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/sound/atmel,sama5d2-pdmic.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Atmel PDMIC decoder |
| 9 | |
| 10 | maintainers: |
| 11 | - Claudiu Beznea <claudiu.beznea@microchip.com> |
| 12 | |
| 13 | description: |
| 14 | Atmel Pulse Density Modulation Interface Controller |
| 15 | (PDMIC) peripheral is a mono PDM decoder module |
| 16 | that decodes an incoming PDM sample stream. |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | const: atmel,sama5d2-pdmic |
| 21 | |
| 22 | reg: |
| 23 | maxItems: 1 |
| 24 | |
| 25 | interrupts: |
| 26 | maxItems: 1 |
| 27 | |
| 28 | clocks: |
| 29 | items: |
| 30 | - description: peripheral clock |
| 31 | - description: generated clock |
| 32 | |
| 33 | clock-names: |
| 34 | items: |
| 35 | - const: pclk |
| 36 | - const: gclk |
| 37 | |
| 38 | dmas: |
| 39 | maxItems: 1 |
| 40 | |
| 41 | dma-names: |
| 42 | const: rx |
| 43 | |
| 44 | atmel,mic-min-freq: |
| 45 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 46 | description: |
| 47 | The minimal frequency that the microphone supports. |
| 48 | |
| 49 | atmel,mic-max-freq: |
| 50 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 51 | description: |
| 52 | The maximal frequency that the microphone supports. |
| 53 | |
| 54 | atmel,model: |
| 55 | $ref: /schemas/types.yaml#/definitions/string |
| 56 | default: PDMIC |
| 57 | description: The user-visible name of this sound card. |
| 58 | |
| 59 | atmel,mic-offset: |
| 60 | $ref: /schemas/types.yaml#/definitions/int32 |
| 61 | default: 0 |
| 62 | description: The offset that should be added. |
| 63 | |
| 64 | required: |
| 65 | - compatible |
| 66 | - reg |
| 67 | - interrupts |
| 68 | - dmas |
| 69 | - dma-names |
| 70 | - clock-names |
| 71 | - clocks |
| 72 | - atmel,mic-min-freq |
| 73 | - atmel,mic-max-freq |
| 74 | |
| 75 | additionalProperties: false |
| 76 | |
| 77 | examples: |
| 78 | - | |
| 79 | #include <dt-bindings/dma/at91.h> |
| 80 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 81 | |
| 82 | pdmic: sound@f8018000 { |
| 83 | compatible = "atmel,sama5d2-pdmic"; |
| 84 | reg = <0xf8018000 0x124>; |
| 85 | interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>; |
| 86 | dmas = <&dma0 |
| 87 | (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
| 88 | | AT91_XDMAC_DT_PERID(50))>; |
| 89 | dma-names = "rx"; |
| 90 | clocks = <&pdmic_clk>, <&pdmic_gclk>; |
| 91 | clock-names = "pclk", "gclk"; |
| 92 | pinctrl-names = "default"; |
| 93 | pinctrl-0 = <&pinctrl_pdmic_default>; |
| 94 | atmel,model = "PDMIC@sama5d2_xplained"; |
| 95 | atmel,mic-min-freq = <1000000>; |
| 96 | atmel,mic-max-freq = <3246000>; |
| 97 | atmel,mic-offset = <0x0>; |
| 98 | }; |