ARM_Bruzzler

Thank you for the information.

Thank you very much for checking. I use the Debian (minimal/iot) image from https://www.armbian.com/orange-pi-zero-3/. At the moment I have the kernel version 6.6.44. I ran sudo apt update && sudo apt upgrade and verified the overlay is still required after the latest update. So will the correction eventually be distributed over apt in a couple of days or weeks?

I want to use GPIO Pi16 on the 13 pin expansion header of the board. This pin is claimed by the kernel for the ethernet MAC. According to the SOC Datasheet this pin has the option to provide a 25 MHz clock signal for the ethernet MAC, which is not relevant for this board. Thanks to this Topic https://forum.armbian.com/topic/30274-armbian-build-how-to-modify-dts-file-to-change-gpio-mapping/ and the device tree source files https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/allwinner/sun50i-h618-orangepi-zero3.dts, https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero.dtsi and https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi i managed to create an overlay named sun50i-h616-fix-emac-pin.dts to release the GPIO pin from the ethernet MAC/kernel. /dts-v1/; /plugin/; / { compatible = "allwinner,sun50i-h616"; fragment@0 { target=<&pio>; __overlay__{ ext_rgmii_pins: rgmii-pins { pins = "PI0", "PI1", "PI2", "PI3", "PI4", "PI5", "PI7", "PI8", "PI9", "PI10", "PI11", "PI12", "PI13", "PI14", "PI15"; function = "emac0"; drive-strength = <40>; }; }; }; fragment@1 { target = <&emac0>; __overlay__ { pinctrl-0 = <&ext_rgmii_pins>; }; }; }; sudo armbian-add-overlay /boot/sun50i-h616-fix-emac-pin.dts Even though I don't really understand how to write device tree overlays, surprisingly I could compile and apply the overlay to the kernel with the command above and it did its job. The GPIO is available now and the ethernet connection still works. Can someone who actually understands this subject review my code and include this change in the right form at the right spot?

I solved the issue on hardware level. It turned out that those pins had external pull-ups. I switched to two other pins which worked just fine.

Hello, I'm using a BPI M2 Zero (with H3 Chip) to control two relays on CON2-P05 / PA11 and CON2-P03 / PA12. During the boot process there is a high level present at the pins, which is driving the relays. Is there a way to create a DTB overlay to drive the pins to a low level during boot. My userspace application uses libgpiod to control the pins. I'm familiar with compiling and activating overlays, i would just need help to write the correct .dts file. Thank you very much in advance