spi: dt-bindings: brcm,bcm2835-spi: convert to dtschema

Broadcom BCM2835 SPI0 controller

The BCM2835 contains two forms of SPI master controller, one known simply as

SPI0, and the other known as the "Universal SPI Master"; part of the

auxiliary block. This binding applies to the SPI0 controller.

Required properties:

- compatible: Should be one of "brcm,bcm2835-spi" for BCM2835/2836/2837 or

  "brcm,bcm2711-spi" for BCM2711 or "brcm,bcm7211-spi" for BCM7211.

- reg: Should contain register location and length.

- interrupts: Should contain interrupt.

- clocks: The clock feeding the SPI controller.

Example:

spi@20204000 {

	compatible = "brcm,bcm2835-spi";

	reg = <0x7e204000 0x1000>;

	interrupts = <2 22>;

	clocks = <&clk_spi>;

	#address-cells = <1>;

	#size-cells = <0>;

};

# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/spi/brcm,bcm2835-spi.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom BCM2835 SPI0 controller

maintainers:

  - Florian Fainelli <florian.fainelli@broadcom.com>

  - Kanak Shilledar <kanakshilledar111@protonmail.com>

  - Stefan Wahren <wahrenst@gmx.net>

allOf:

  - $ref: spi-controller.yaml#

properties:

  compatible:

    enum:

      - brcm,bcm2835-spi

      - brcm,bcm2711-spi

      - brcm,bcm7211-spi

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

  clocks:

    maxItems: 1

required:

  - compatible

  - reg

  - interrupts

  - clocks

unevaluatedProperties: false

examples:

  - |

    spi@20204000 {

        compatible = "brcm,bcm2835-spi";

        reg = <0x7e204000 0x1000>;

        interrupts = <2 22>;

        clocks = <&clk_spi>;

        #address-cells = <1>;

        #size-cells = <0>;

    };