1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/gpio/rockchip,rk3328-grf-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Rockchip RK3328 General Register Files GPIO controller
10 The Rockchip RK3328 General Register File (GRF) outputs only the
11 GPIO_MUTE pin, originally for codec mute control, but it can also be used
12 for general purpose. It is manipulated by the GRF_SOC_CON10 register.
13 If needed in the future support for the HDMI pins can also be added.
14 The GPIO node should be declared as the child of the GRF node.
16 The GPIO_MUTE pin is referred to in the format
18 <&grf_gpio 0 GPIO_ACTIVE_LOW>
20 The first cell is the pin number and
21 the second cell is used to specify the GPIO polarity
26 - Heiko Stuebner <heiko@sntech.de>
30 const: rockchip,rk3328-grf-gpio
42 additionalProperties: false
47 compatible = "rockchip,rk3328-grf-gpio";