Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml
Extension
.yaml
Size
1827 bytes
Lines
85
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 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/spacemit,k1-spi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: SpacemiT K1 SoC Serial Peripheral Interface (SPI)

maintainers:
  - Alex Elder <elder@kernel.org>

description:
  The SpacemiT K1 SoC implements a SPI controller that has two 32-entry
  FIFOs, for transmit and receive.  Details are currently available in
  section 18.2.1 of the K1 User Manual, found in the SpacemiT Keystone
  K1 Documentation[1].  The controller transfers words using PIO.  DMA
  transfers are supported as well, if both TX and RX DMA channels are
  specified,

  [1] https://developer.spacemit.com/documentation

allOf:
  - $ref: /schemas/spi/spi-controller.yaml#

properties:
  compatible:
    const: spacemit,k1-spi

  reg:
    maxItems: 1

  clocks:
    items:
      - description: Core clock
      - description: Bus clock

  clock-names:
    items:
      - const: core
      - const: bus

  resets:
    maxItems: 1

  interrupts:
    maxItems: 1

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

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

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - resets
  - interrupts

unevaluatedProperties: false

examples:
  - |

Annotation

Implementation Notes