xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/spacemit,k1-i2c.yaml (revision 833e5d42ab135b0238e61c5b3c19b8619677cbfa)

# 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:
    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

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>;
    };

...