dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml

Spreadtrum GPIO controller bindings

The controller's registers are organized as sets of sixteen 16-bit

registers with each set controlling a bank of up to 16 pins. A single

interrupt is shared for all of the banks handled by the controller.

Required properties:

- compatible: Should be "sprd,sc9860-gpio".

- reg: Define the base and range of the I/O address space containing

the GPIO controller registers.

- gpio-controller: Marks the device node as a GPIO controller.

- #gpio-cells: Should be <2>. The first cell is the gpio number and

the second cell is used to specify optional parameters.

- interrupt-controller: Marks the device node as an interrupt controller.

- #interrupt-cells: Should be <2>. Specifies the number of cells needed

to encode interrupt source.

- interrupts: Should be the port interrupt shared by all the gpios.

Example:

	ap_gpio: gpio@40280000 {

		compatible = "sprd,sc9860-gpio";

		reg = <0 0x40280000 0 0x1000>;

		gpio-controller;

		#gpio-cells = <2>;

		interrupt-controller;

		#interrupt-cells = <2>;

		interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;

	};

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

# Copyright 2022 Unisoc Inc.

%YAML 1.2

---

$id: http://devicetree.org/schemas/gpio/sprd,gpio.yaml#

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

title: Unisoc GPIO controller

maintainers:

  - Orson Zhai <orsonzhai@gmail.com>

  - Baolin Wang <baolin.wang7@gmail.com>

  - Chunyan Zhang <zhang.lyra@gmail.com>

description: |

  The controller's registers are organized as sets of sixteen 16-bit

  registers with each set controlling a bank of up to 16 pins. A single

  interrupt is shared for all of the banks handled by the controller.

properties:

  compatible:

    const: sprd,sc9860-gpio

  reg:

    maxItems: 1

  gpio-controller: true

  "#gpio-cells":

    const: 2

  interrupt-controller: true

  "#interrupt-cells":

    const: 2

  interrupts:

    maxItems: 1

    description: The interrupt shared by all GPIO lines for this controller.

required:

  - compatible

  - reg

  - gpio-controller

  - "#gpio-cells"

  - interrupt-controller

  - "#interrupt-cells"

  - interrupts

additionalProperties: false

examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    soc {

        #address-cells = <2>;

        #size-cells = <2>;

        ap_gpio: gpio@40280000 {

            compatible = "sprd,sc9860-gpio";

            reg = <0 0x40280000 0 0x1000>;

            gpio-controller;

            #gpio-cells = <2>;

            interrupt-controller;

            #interrupt-cells = <2>;

            interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;

        };

    };

...