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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/atmel,sama5d2-pdmic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel PDMIC decoder
maintainers:
- Claudiu Beznea <claudiu.beznea@microchip.com>
description:
Atmel Pulse Density Modulation Interface Controller
(PDMIC) peripheral is a mono PDM decoder module
that decodes an incoming PDM sample stream.
properties:
compatible:
const: atmel,sama5d2-pdmic
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: peripheral clock
- description: generated clock
clock-names:
items:
- const: pclk
- const: gclk
dmas:
maxItems: 1
dma-names:
const: rx
atmel,mic-min-freq:
$ref: /schemas/types.yaml#/definitions/uint32
description:
The minimal frequency that the microphone supports.
atmel,mic-max-freq:
$ref: /schemas/types.yaml#/definitions/uint32
description:
The maximal frequency that the microphone supports.
atmel,model:
$ref: /schemas/types.yaml#/definitions/string
default: PDMIC
description: The user-visible name of this sound card.
atmel,mic-offset:
$ref: /schemas/types.yaml#/definitions/int32
default: 0
description: The offset that should be added.
required:
- compatible
- reg
- interrupts
- dmas
- dma-names
- clock-names
- clocks
- atmel,mic-min-freq
- atmel,mic-max-freq
additionalProperties: false
examples:
- |
#include <dt-bindings/dma/at91.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
pdmic: sound@f8018000 {
compatible = "atmel,sama5d2-pdmic";
reg = <0xf8018000 0x124>;
interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
| AT91_XDMAC_DT_PERID(50))>;
dma-names = "rx";
clocks = <&pdmic_clk>, <&pdmic_gclk>;
clock-names = "pclk", "gclk";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pdmic_default>;
atmel,model = "PDMIC@sama5d2_xplained";
atmel,mic-min-freq = <1000000>;
atmel,mic-max-freq = <3246000>;
atmel,mic-offset = <0x0>;
};
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