On 26/09/2022 11:14, Yoshihiro Shimoda wrote:

quoted

Don't drop, but instead put it before "properties" for this nested object.

Oh, I got it. Thanks!
I'll put this before "properties:" like below:
-----
  ethernet-ports:
    type: object

Without blank line here.

    additionalProperties: false

quoted

    properties:

This is ok.

      '#address-cells':
        description: Port number of ETHA (TSNA).
        const: 1

      '#size-cells':
        const: 0
-----

Best regards,
Krzysztof