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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-classd.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel ClassD Amplifier
maintainers:
- Nicolas Ferre <nicolas.ferre@microchip.com>
- Alexandre Belloni <alexandre.belloni@bootlin.com>
- Claudiu Beznea <claudiu.beznea@microchip.com>
description:
The Audio Class D Amplifier (CLASSD) is a digital input, Pulse Width
Modulated (PWM) output stereo Class D amplifier.
properties:
compatible:
const: atmel,sama5d2-classd
reg:
maxItems: 1
interrupts:
maxItems: 1
dmas:
maxItems: 1
dma-names:
const: tx
clocks:
maxItems: 2
clock-names:
items:
- const: pclk
- const: gclk
atmel,model:
$ref: /schemas/types.yaml#/definitions/string
default: CLASSD
description: The user-visible name of this sound complex.
atmel,pwm-type:
$ref: /schemas/types.yaml#/definitions/string
enum:
- single
- diff
default: single
description: PWM modulation type.
atmel,non-overlap-time:
$ref: /schemas/types.yaml#/definitions/uint32
enum:
- 5
- 10
- 15
- 20
default: 10
description:
Set non-overlapping time, the unit is nanosecond(ns).
Non-overlapping will be disabled if not specified.
required:
- compatible
- reg
- interrupts
- dmas
- dma-names
- clock-names
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/dma/at91.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
classd: sound@fc048000 {
compatible = "atmel,sama5d2-classd";
reg = <0xfc048000 0x100>;
interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>;
dmas = <&dma0
(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
| AT91_XDMAC_DT_PERID(47))>;
dma-names = "tx";
clocks = <&classd_clk>, <&classd_gclk>;
clock-names = "pclk", "gclk";
assigned-clocks = <&classd_gclk>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_classd_default>;
atmel,model = "classd @ SAMA5D2-Xplained";
atmel,pwm-type = "diff";
atmel,non-overlap-time = <10>;
};
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