Brooklyn/arch/arm/boot/dts/overlays/cutiepi-panel-overlay.dts

/dts-v1/;
/plugin/;

/ {
    compatible = "brcm,bcm2711";

    fragment@0 {
        target=<&dsi1>;

        __overlay__ {
            status = "okay";

            #address-cells = <1>;
            #size-cells = <0>;

            port {
                dsi1_out_port: endpoint {
                    remote-endpoint = <&panel_dsi_in1>;
                };
            };

            display1: panel@0 {
                compatible = "nwe,nwe080";
                reg=<0>;
                backlight = <&rpi_backlight>;
                reset-gpios = <&gpio 20 0>;
                port {
                    panel_dsi_in1: endpoint {
                        remote-endpoint = <&dsi1_out_port>;
                    };
                };
            };
        };
    };

    fragment@1 {
        target = <&gpio>;
        __overlay__ {
            pwm_pins: pwm_pins {
                brcm,pins = <12>;
                brcm,function = <4>; // ALT0
            };
        };
    };

    fragment@2 {
        target = <&pwm>;
        frag1: __overlay__ {
            pinctrl-names = "default";
            pinctrl-0 = <&pwm_pins>;
            assigned-clock-rates = <1000000>;
            status = "okay";
        };
    };

    fragment@3 {
        target-path = "/";
        __overlay__ {
            rpi_backlight: rpi_backlight {
                compatible = "pwm-backlight";
                brightness-levels = <0 6 8 12 16 24 32 40 48 64 96 128 160 192 224 255>;
                default-brightness-level = <6>;
                pwms = <&pwm 0 200000>;
                power-supply = <&vdd_3v3_reg>;
                status = "okay";
            };
        };
    };

    fragment@4 {
        target = <&i2c6>;
        frag0: __overlay__ {
            status = "okay";
            pinctrl-names = "default";
            pinctrl-0 = <&i2c6_pins>;
            clock-frequency = <100000>;
        };
    };

    fragment@5 {
        target = <&i2c6_pins>;
        __overlay__ {
            brcm,pins = <22 23>;
        };
    };

    fragment@6 {
            target = <&gpio>;
            __overlay__ {
                goodix_pins: goodix_pins {
                    brcm,pins = <21 26>; // interrupt and reset
                    brcm,function = <0 0>; // in
                    brcm,pull = <2 2>; // pull-up
                };
            };
    };

    fragment@7 {
        target = <&i2c6>;
        __overlay__ {
            #address-cells = <1>;
            #size-cells = <0>;
            status = "okay";

            gt9xx: gt9xx@5d {
                compatible = "goodix,gt9271"; 
                reg = <0x5D>;
                pinctrl-names = "default";
                pinctrl-0 = <&goodix_pins>;
                interrupt-parent = <&gpio>;
                interrupts = <21 2>; // high-to-low edge triggered
                irq-gpios = <&gpio 21 0>; 
                reset-gpios = <&gpio 26 0>;
            };
        };
    };
};