zephyr/dts/bindings/spi/spi.yaml

#
# Copyright (c) 2018, I-SENSE group of ICCS
#
# SPDX-License-Identifier: Apache-2.0
#
---
title: SPI Base Structure
id: spi
version: 0.1

description: >
    This binding gives the base structures for all SPI devices

child:
    bus: spi

properties:
    "#address-cells":
      type: int
      category: required
      description: should be 1.
    "#size-cells":
      type: int
      category: required
      description: should be 0.
    label:
      type: string
      category: required
      description: Human readable string describing the device (used by Zephyr for API name)
      generation: define
...