Commit 76fe9ac1 authored by Troy Mitchell's avatar Troy Mitchell Committed by Andi Shyti
Browse files

dt-bindings: i2c: spacemit: add support for K1 SoC 



The I2C of K1 supports fast-speed-mode and high-speed-mode,
and supports FIFO transmission.

Signed-off-by: default avatarTroy Mitchell <troymitchell988@gmail.com>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Signed-off-by: default avatarAndi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250319-k1-i2c-master-v8-1-013e2df2b78d@gmail.com
parent b6ef830c

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

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# 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>



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>;

    };



...