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

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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: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Johan Jonker 2021-05-11 07:05:08 +02:00 committed by Bartosz Golaszewski
parent 6efb943b86
commit 63c4acfb80
2 changed files with 50 additions and 32 deletions
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32
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>.

50
Documentation/devicetree/bindings/gpio/rockchip,rk3328-grf-gpio.yaml Normal file
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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>;
};