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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/atmel,at91rm9200-udc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel AT91 USB Device Controller (UDC)
maintainers:
- Nicolas Ferre <nicolas.ferre@microchip.com>
- Alexandre Belloni <alexandre.belloni@bootlin.com>
description:
The Atmel AT91 USB Device Controller provides USB gadget (device-mode)
functionality on AT91 SoCs. It requires a peripheral clock and an AHB
clock for operation and may optionally control VBUS power through a GPIO.
properties:
compatible:
enum:
- atmel,at91rm9200-udc
- atmel,at91sam9260-udc
- atmel,at91sam9261-udc
- atmel,at91sam9263-udc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 2
clock-names:
items:
- const: pclk
- const: hclk
atmel,vbus-gpio:
description: GPIO used to enable or control VBUS power for the USB bus.
maxItems: 1
atmel,matrix:
$ref: /schemas/types.yaml#/definitions/phandle
description: Phandle to the Atmel bus matrix controller.
atmel,pullup-gpio:
description:
GPIO controlling the USB D+ pull-up resistor used to signal device
connection to the host.
maxItems: 1
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/clock/at91.h>
#include <dt-bindings/gpio/gpio.h>
gadget@fffa4000 {
compatible = "atmel,at91rm9200-udc";
reg = <0xfffa4000 0x4000>;
interrupts = <11 IRQ_TYPE_LEVEL_HIGH 2>;
clocks = <&udc_clk>, <&udpck>;
clock-names = "pclk", "hclk";
atmel,vbus-gpio = <&pioC 5 GPIO_ACTIVE_HIGH>;
};
...
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