Temperature from DS18B20

Hardware and peripherals
57

I finally have the DS18B20 working on a new kernel (Armbian with 5.19.5-rockchip64 kernel) !!!

  1. Create and edit a w1-gpio.dts file as this:

/dts-v1/;
/plugin/;

/ {
compatible = “rockchip,rockpi”,“rockchip,rk3399”;

    fragment@0 {
            target-path = "/";

            __overlay__ {

                    w1: onewire@0 {
                            compatible = "w1-gpio";
                            pinctrl-names = "default";
                            gpios = <&gpio4 30 0>;
                            status = "okay";
                    };
            };
    };

};

  1. Compile it and put it where he must go (note dtc is normally installed with recents armbian):
    sudo dtc -I dts -O dtb -o /boot/dtb-5.19.5-rockchip64/rockchip/overlay/rockchip-w1-gpio.dtbo w1-gpio.dts
  2. Reboot, et voilà !!!
    sudo dmesg | grep w1
    [ 5.754498] w1_master_driver w1_bus_master1: Attaching one wire slave 10.000802e5e4d1 crc 3c

I think this trick should work with all distro using device tree (dietPi, armbian, etc..)

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