dts: bindings: can: add devicetree binding for ESP32 TWAI

# Copyright (c) 2022 Henrik Brix Andersen <henrik@brixandersen.dk>

# SPDX-License-Identifier: Apache-2.0

description: Espressif ESP32 Two-Wire Automotive Interface (TWAI)

compatible: "espressif,esp32-twai"

include: [can-controller.yaml, pinctrl-device.yaml]

properties:

    reg:

      required: true

    interrupts:

      required: true

    clocks:

      required: true

    pinctrl-0:

      required: true

    pinctrl-names:

      required: true

    clkout-divider:

      type: int

      required: false

      enum:

        - 1

        - 2

        - 4

        - 6

        - 8

        - 10

        - 12

        - 14

      description: |

        Clock divider for the CLKOUT signal. If not set, the CLKOUT signal is turned off.