Hello. Sorry for maybe newbie question. I try to enable DS18B20 on my tinkerboard. The Armbian version is 21.08.1_Tinkerboard_buster_current_5.10.60. I've read the documentation about DTC, but I see no /boot/dtb/overlay directory, just /boot/dtb. I copied decompiled version of dtb from TinkerOS to this folder, compile it to rockchip-w1-gpio.dtb, but there is no /sys/bus/w1 folder.

 

dmesg|grep w1 is empty.

 

Here is my dts file:

/dts-v1/;

/ {
	compatible = "rockchip,rk3288-miniarm", "rockchip,rk3288";

	fragment@0 {
		target-path = [2f 00];

		__overlay__ {

			onewire@0 {
				compatible = "w1-gpio";
				pinctrl-names = "default";
				pinctrl-0 = <0x1>;
				gpios = <0xffffffff 0x11 0x0>;
				status = "okay";
				phandle = <0x2>;
			};
		};
	};

	fragment@1 {
		target = <0xffffffff>;

		__overlay__ {

			w1_pins@0 {
				rockchip,pins = <0x0 0x11 0x0 0xffffffff>;
				phandle = <0x1>;
			};
		};
	};

	__symbols__ {
		w1 = "/fragment@0/__overlay__/onewire@0";
		w1_pins = "/fragment@1/__overlay__/w1_pins@0";
	};

	__fixups__ {
		gpio0 = "/fragment@0/__overlay__/onewire@0:gpios:0", "/fragment@1:target:0";
		pcfg_pull_up = "/fragment@1/__overlay__/w1_pins@0:rockchip,pins:12";
	};

	__local_fixups__ {

		fragment@0 {

			__overlay__ {

				onewire@0 {
					pinctrl-0 = <0x0>;
				};
			};
		};
	};
};

 

 

Here is my armbianEnv.txt:

 

verbosity=1
bootlogo=false
overlay_prefix=rockchip
overlays=i2c1 i2c4 spi2 spidev2 uart1 uart2 w1-gpio
rootdev=UUID=acb95555-1de2-4b72-85c7-28b7b9d1a84e
rootfstype=ext4
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

 

Am I on a right way to activate 1-wire driver? Shall I use another method to add new device to DT on this OS version?

Maybe this is related to this:

 

I'm also experiencing similar issues with a NanoPi M4v2 here:

 

Have you found a solution @IvanD? It seems like there are regular issues around 1 wire in Rockchip boards.