Documentation/devicetree/bindings/serial/st,stm32-uart.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
Extension: .yaml
Size: 2652 bytes
Lines: 134
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/clock/stm32mp1-clks.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)
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/st,stm32-uart.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

maintainers:
  - Erwan Le Ray <erwan.leray@foss.st.com>

title: STMicroelectronics STM32 USART

properties:
  compatible:
    enum:
      - st,stm32-uart
      - st,stm32f7-uart
      - st,stm32h7-uart

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    maxItems: 1

  resets:
    maxItems: 1

  label:
    description: label associated with this uart

  st,hw-flow-ctrl:
    description: enable hardware flow control (deprecated)
    $ref: /schemas/types.yaml#/definitions/flag

  rx-tx-swap: true

  dmas:
    minItems: 1
    maxItems: 2

  dma-names:
    items:
      enum: [ rx, tx ]
    minItems: 1
    maxItems: 2

# cts-gpios and rts-gpios properties can be used instead of 'uart-has-rtscts'
# or 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow
# control instead of dedicated pins.
#
# It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or
# 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design.
  cts-gpios: true
  rts-gpios: true

  wakeup-source: true

  power-domains:
    maxItems: 1

  rx-threshold:
    description:
      If value is set to 1, RX FIFO threshold is disabled.
    enum: [1, 2, 4, 8, 12, 14, 16]
    default: 8

  tx-threshold:

Annotation

Immediate include surface: `dt-bindings/clock/stm32mp1-clks.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.