Commit 36f42234 authored by Harshit Shah's avatar Harshit Shah Committed by Arnd Bergmann
Browse files

dt-bindings: gpio: cdns: convert to YAML 



Convert Cadence family GPIO controller bindings to DT schema.

Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarHarshit Shah <hshah@axiado.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent c1fbbb76

Documentation/devicetree/bindings/gpio/cdns,gpio.txt

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Cadence GPIO controller bindings



Required properties:

- compatible: should be "cdns,gpio-r1p02".

- reg: the register base address and size.

- #gpio-cells: should be 2.

	* first cell is the GPIO number.

	* second cell specifies the GPIO flags, as defined in

		<dt-bindings/gpio/gpio.h>. Only the GPIO_ACTIVE_HIGH

		and GPIO_ACTIVE_LOW flags are supported.

- gpio-controller: marks the device as a GPIO controller.

- clocks: should contain one entry referencing the peripheral clock driving

	the GPIO controller.



Optional properties:

- ngpios: integer number of gpio lines supported by this controller, up to 32.

- interrupts: interrupt specifier for the controllers interrupt.

- interrupt-controller: marks the device as an interrupt controller. When

	defined, interrupts, interrupt-parent and #interrupt-cells

	are required.

- interrupt-cells: should be 2.

	* first cell is the GPIO number you want to use as an IRQ source.

	* second cell specifies the IRQ type, as defined in

		<dt-bindings/interrupt-controller/irq.h>.

		Currently only level sensitive IRQs are supported.





Example:

	gpio0: gpio-controller@fd060000 {

		compatible = "cdns,gpio-r1p02";

		reg =<0xfd060000 0x1000>;



		clocks = <&gpio_clk>;



		interrupt-parent = <&gic>;

		interrupts = <0 5 IRQ_TYPE_LEVEL_HIGH>;



		gpio-controller;

		#gpio-cells = <2>;



		interrupt-controller;

		#interrupt-cells = <2>;

	};

Documentation/devicetree/bindings/gpio/cdns,gpio.yaml

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

%YAML 1.2

---

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

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



title: Cadence GPIO Controller



maintainers:

  - Jan Kotas <jank@cadence.com>



properties:

  compatible:

    const: cdns,gpio-r1p02



  reg:

    maxItems: 1



  clocks:

    maxItems: 1



  ngpios:

    minimum: 1

    maximum: 32



  gpio-controller: true



  "#gpio-cells":

    const: 2

    description: |

      - First cell is the GPIO line number.

      - Second cell is flags as defined in <dt-bindings/gpio/gpio.h>,

        only GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW supported.



  interrupt-controller: true



  "#interrupt-cells":

    const: 2

    description: |

      - First cell is the GPIO line number used as IRQ.

      - Second cell is the trigger type, as defined in

        <dt-bindings/interrupt-controller/irq.h>.



  interrupts:

    maxItems: 1



required:

  - compatible

  - reg

  - clocks

  - gpio-controller

  - "#gpio-cells"



if:

  required: [interrupt-controller]

then:

  required:

    - interrupts



additionalProperties: false



examples:

  - |

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

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

    gpio0: gpio-controller@fd060000 {

        compatible = "cdns,gpio-r1p02";

        reg = <0xfd060000 0x1000>;

        clocks = <&gpio_clk>;



        interrupt-parent = <&gic>;

        interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;



        gpio-controller;

        #gpio-cells = <2>;



        interrupt-controller;

        #interrupt-cells = <2>;

    };