Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml
Extension: .yaml
Size: 5320 bytes
Lines: 202
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.

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

Dependency Surface

dt-bindings/gpio/gpio.h
dt-bindings/interrupt-controller/irq.h
dt-bindings/mfd/at91-usart.h
dt-bindings/dma/at91.h

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)

maintainers:
  - Richard Genoud <richard.genoud@bootlin.com>

properties:
  compatible:
    oneOf:
      - enum:
          - atmel,at91rm9200-usart
          - atmel,at91sam9260-usart
      - items:
          - const: atmel,at91rm9200-dbgu
          - const: atmel,at91rm9200-usart
      - items:
          - const: atmel,at91sam9260-dbgu
          - const: atmel,at91sam9260-usart
      - items:
          - enum:
              - microchip,lan9691-usart
              - microchip,sam9x60-usart
              - microchip,sam9x7-usart
              - microchip,sama7d65-usart
          - const: atmel,at91sam9260-usart
      - items:
          - const: microchip,sam9x60-dbgu
          - const: microchip,sam9x60-usart
          - const: atmel,at91sam9260-dbgu
          - const: atmel,at91sam9260-usart
      - items:
          - const: microchip,sam9x7-dbgu
          - const: atmel,at91sam9260-dbgu
          - const: microchip,sam9x7-usart
          - const: atmel,at91sam9260-usart

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clock-names:
    minItems: 1
    items:
      - const: usart
      - const: gclk

  clocks:
    minItems: 1
    items:
      - description: USART Peripheral Clock
      - description: USART Generic Clock

  dmas:
    items:
      - description: TX DMA Channel
      - description: RX DMA Channel

  dma-names:
    items:
      - const: tx
      - const: rx

Annotation

Immediate include surface: `dt-bindings/gpio/gpio.h`, `dt-bindings/interrupt-controller/irq.h`, `dt-bindings/mfd/at91-usart.h`, `dt-bindings/dma/at91.h`.
Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.