ct1820b-board.dtsi

/* BA4K / Hi3516CV610 专用片段，合入现有板级 DTS，不是独立 DTS。 */
&gpio_chip1 { gpio-controller; };

/ {
    w1_temperature {
        compatible = "w1-gpio";
        gpios = <&gpio_chip1 4 0>;
        pinctrl-names = "default";
        pinctrl-0 = <&ct1820_dio_pin>;
        status = "okay";
    };
    ct1820_pinmux: pinctrl@11130004 {
        compatible = "pinctrl-single";
        reg = <0x11130004 0x4>;
        #pinctrl-cells = <1>;
        pinctrl-single,register-width = <32>;
        pinctrl-single,function-mask = <0xf>;
        ct1820_dio_pin: ct1820-dio-pin {
            pinctrl-single,pins = <0x0 0x0>; /* M2 GPIO1_4 */
        };
    };
};