Documentation/devicetree/bindings/usb/atmel,at91rm9200-udc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/usb/atmel,at91rm9200-udc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/usb/atmel,at91rm9200-udc.yaml
Extension
.yaml
Size
1843 bytes
Lines
77
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# 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>;

Annotation

Implementation Notes