aknigin Posted September 17, 2023 Share Posted September 17, 2023 Hello there. I'm trying to set up GPIO pins PD15 and PD16 on my OrangePi 3 LTS to work as input pins using device tree overlays. The overlay I have created is the following (for PD15 only): /dts-v1/; /plugin/; / { compatible = "allwinner,sun50i-h6"; fragment@0 { target = <&pio>; __overlay__ { my_pins:my_pins { pins = "PD15"; function = "gpio_in"; default-state = "on"; }; }; }; fragment@1 { target-path = "/"; __overlay__ { my@0 { compatible = "my-gpio"; pinctrl-names = "default"; pinctrl-0 = <&my_pins>; gpios = <&pio 3 15 0>; status = "okay"; }; }; }; }; Probably it is incorrect, because when I check the GPIO state using "gpio readall" command, I still get OFF state for the PD15 pin. Of course, I could change the pin mode using the "gpio" command itself (it does work, like "gpio mode 9 in" does set the PD15 pin mode to input), but I would prefer the overlays method. 0 Quote Link to comment Share on other sites More sharing options...
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