blabla


To enable I2C3 interface on Orange Pi, follow instructions below:
Create a file sun50i-h6-i2c3.dts


		

/dts-v1/;
/plugin/;

/ {
	compatible = "allwinner,sun50i-h6";

	fragment@0 {
		target-path = "/aliases";
		__overlay__ {
			i2c3 = "/soc/i2c@5002c00";
		};
	};

	fragment@1 {
		target = <&i2c3>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&i2c3_ph_pins>;
			status = "okay";
		};
	};
};


Compile this file into a binary device-tree overlay blob:


dtc -I dts -O dtb -o sun50i-h6-i2c3.dtbo sun50i-h6-i2c3.dts

Set permmissions and copy compiled file into /boot/dtb/allwinner/overlay:


chmod +x ./sun50i-h6-i2c3.dtbo
sudo cp ./sun50i-h6-i2c3.dtbo /boot/dtb/allwinner/overlay

Then use the following in your armbianEnv.txt:


overlay_prefix=sun50i-h6
overlay=i2c3

Copyright 2024, Mario Matovina
Send me an e-mail