ABK

Hi, I am using Nanopi Neo board and I need RS485 driver to control DE pin automatically. I have prepared DTS Overlay file: /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target = <&uart1>; __overlay__ { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&uart1_pins &uart1_de_pin>; rs485-rts-gpios = <&gpio6 8 0>; /* PG8 active-low */ linux,rs485-enabled-at-boot-time; rs485-rts-delay = <0 300>; }; }; fragment@1 { target = <&uart2>; __overlay__ { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&uart2_pins &uart2_de_pin>; rs485-rts-gpios = <&gpio0 2 0>; /* PA2 active-low */ linux,rs485-enabled-at-boot-time; rs485-rts-delay = <0 300>; }; }; }; I produced dtbo file from dts one with the command: dtc -@ -I dts -O dtb -o rs485.dtbo rs485.dts I copied this rs485.dtbo file to /boot/dtb/overlay. Also I added rs485 string to ArmbianEnv.txt and rebooted. But only TX works, RX doesn't. What should I do else to make it work?