forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.2 KiB
50 lines
1.2 KiB
# 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 <[email protected]> |
|
|
|
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>; |
|
};
|
|
|