51 lines
1.2 KiB
YAML
51 lines
1.2 KiB
YAML
# 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>;
|
|
};
|