Commit 63c4acfb authored by Johan Jonker's avatar Johan Jonker Committed by Bartosz Golaszewski
Browse files

dt-bindings: gpio: convert rk3328-grf-gpio.txt to YAML 



Current dts files with RK3328 GRF 'gpio' nodes are manually verified.
In order to automate this process rk3328-grf-gpio.txt has to be
converted to YAML.

Rename 'grf-gpio' nodename to 'gpio'.

Signed-off-by: default avatarJohan Jonker <jbx6244@gmail.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
parent 6efb943b

Documentation/devicetree/bindings/gpio/rockchip,rk3328-grf-gpio.txt

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Rockchip RK3328 GRF (General Register Files) GPIO controller.



In Rockchip RK3328, the output only GPIO_MUTE pin, originally for codec mute

control, can also be used for general purpose. It is manipulated by the

GRF_SOC_CON10 register in GRF. Aside from the GPIO_MUTE pin, the HDMI pins can

also be set in the same way.



Currently this GPIO controller only supports the mute pin. If needed in the

future, the HDMI pins support can also be added.



Required properties:

- compatible: Should contain "rockchip,rk3328-grf-gpio".

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

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

  the second cell is used to specify the gpio polarity:

    0 = Active high,

    1 = Active low.



Example:



	grf: syscon@ff100000 {

		compatible = "rockchip,rk3328-grf", "syscon", "simple-mfd";



		grf_gpio: grf-gpio {

			compatible = "rockchip,rk3328-grf-gpio";

			gpio-controller;

			#gpio-cells = <2>;

		};

	};



Note: The grf_gpio node should be declared as the child of the GRF (General

Register File) node. The GPIO_MUTE pin is referred to as <&grf_gpio 0>.

Documentation/devicetree/bindings/gpio/rockchip,rk3328-grf-gpio.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/gpio/rockchip,rk3328-grf-gpio.yaml#

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



title: Rockchip RK3328 General Register Files GPIO controller



description:

  The Rockchip RK3328 General Register File (GRF) outputs only the

  GPIO_MUTE pin, originally for codec mute control, but it can also be used

  for general purpose. It is manipulated by the GRF_SOC_CON10 register.

  If needed in the future support for the HDMI pins can also be added.

  The GPIO node should be declared as the child of the GRF node.



  The GPIO_MUTE pin is referred to in the format



  <&grf_gpio 0 GPIO_ACTIVE_LOW>



  The first cell is the pin number and

  the second cell is used to specify the GPIO polarity

    0 = Active high

    1 = Active low



maintainers:

  - Heiko Stuebner <heiko@sntech.de>



properties:

  compatible:

    const: rockchip,rk3328-grf-gpio



  gpio-controller: true



  "#gpio-cells":

    const: 2



required:

  - compatible

  - gpio-controller

  - "#gpio-cells"



additionalProperties: false



examples:

  - |

    grf_gpio: gpio {

      compatible = "rockchip,rk3328-grf-gpio";

      gpio-controller;

      #gpio-cells = <2>;

    };