Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
Extension
.yaml
Size
1441 bytes
Lines
72
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/i2c/spacemit,k1-i2c.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: I2C controller embedded in SpacemiT's K1 SoC

maintainers:
  - Troy Mitchell <troymitchell988@gmail.com>

allOf:
  - $ref: /schemas/i2c/i2c-controller.yaml#

properties:
  compatible:
    oneOf:
      - items:
          - const: spacemit,k3-i2c
          - const: spacemit,k1-i2c
      - const: spacemit,k1-i2c

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: I2C Functional Clock
      - description: APB Bus Clock

  clock-names:
    items:
      - const: func
      - const: bus

  clock-frequency:
    description: |
      K1 support three different modes which running different frequencies
      standard speed mode: up to 100000 (100Hz)
      fast speed mode    : up to 400000 (400Hz)
      high speed mode    : up to 3300000 (3.3Mhz)
    default: 400000
    maximum: 3300000

  resets:
    maxItems: 1

required:
  - compatible
  - reg
  - interrupts
  - clocks

unevaluatedProperties: false

examples:
  - |
    i2c@d4010800 {
        compatible = "spacemit,k1-i2c";
        reg = <0xd4010800 0x38>;
        interrupt-parent = <&plic>;
        interrupts = <36>;
        clocks = <&ccu 32>, <&ccu 84>;
        clock-names = "func", "bus";
        clock-frequency = <100000>;
    };

Annotation

Implementation Notes