I'm trying to add support for SAM0 I2C. Currently my code is compiling as I see warnings in my i2c_sam0.c file. 
However I'm trying to add a new binding for that in zephyr/dts/bindings/i2c/atmel,sam0-i2c.yaml and hitting a wall.

---

title: Atmel SAM0 SERCOM I2C driver

id: atmel,sam0-i2c

version: 0.1

 

description: >

    This binding gives a base representation of the Atmel SAM0 SERCOM I2C driver

 

inherits:

    !include i2c.yaml

 

properties:

    compatible:

      type: string

      category: required

      description: compatible strings

      constraint: "atmel,sam0-i2c"

 

    reg:

      type: array

      description: mmio register space

      generation: define

      category: required

 

...

Then in my board dts I added the following:

&sercom3 {

status = "ok";

compatible = "atmel,sam0-i2c";

clock-frequency = <I2C_BITRATE_FAST>;

#address-cells = <1>;

#size-cells = <0>;

};

But something is missing because I keep getting an error when building that it cannot parse the device tree.
I looked around how the other SAM0 device are setup but I didn't find what I'm missing.

Any pointer on how I should go about setting up this binding ?

Best regards,
Léonard.