rockchip/rk356x/zkzg-pcie-rk3568.dtsi

/ {
    reserved-memory {
        #address-cells = <2>;
        #size-cells = <2>;
        ranges;

        pcie_dma: pcie-dma@40000000 {
            reg = <0x0 0x40000000 0x0 0x10000000>;
            no-map;
        };
    };
};

&pcie3x2 {
    compatible = "rockchip,rk3568-pcie-ep";
    reset-gpios = <&gpio0 RK_PC6 GPIO_ACTIVE_HIGH>;
    vpcie3v3-supply = <&vcc3v3_sys>;
    status = "okay";
    memory-region = <&pcie_dma>;
};