EdgeLogix PCIe link down?

I’m trying to get the ethernet switch working in the edgelogix, they are connected to the PCI express slot on the CM4.
The CM4 has 2GB of ram.
This is the result I get with dmesg after changing the overlay file /boot/bcm2711-rpi-cm4.dtb

pi@raspberrypi:~ $ dmesg | grep -i pci
[    0.310151] PCI: CLS 0 bytes, default 64
[    1.200516] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges:
[    1.200555] brcm-pcie fd500000.pcie:   No bus range found for /scb/pcie@7d500000, using [bus 00-ff]
[    1.200641] brcm-pcie fd500000.pcie:      MEM 0xffffffffffffffff..0x007ffffffe -> 0x0000000000
[    1.200720] brcm-pcie fd500000.pcie:   IB MEM 0x0000000000..0x007fffffff -> 0x0400000000
[    1.200743] brcm-pcie fd500000.pcie: non-prefetchable memory resource required
[    1.520185] brcm-pcie fd500000.pcie: link down
pi@raspberrypi:~ $

I changed the overlay as followed,

        scb {
                compatible = "simple-bus";
                #address-cells = <0x02>;
                #size-cells = <0x02>;
                ranges = <0x0 0x7c000000  0x0 0xfc000000  0x0 0x03800000>,
                         <0x0 0x40000000  0x0 0xff800000  0x0 0x00800000>,
                         <0x6 0x00000000  0x6 0x00000000  0x2 0x00000000>,
                         <0x0 0x00000000  0x0 0x00000000  0x0 0xfc000000>;
                dma-ranges = <0x00 0x00 0x00 0x00 0x04 0x00>;
                phandle = <0xe0>;

                pcie@7d500000 {
                        compatible = "brcm,bcm2711-pcie";
                        reg = <0x00 0x7d500000 0x00 0x9310>;
                        device_type = "pci";
                        #address-cells = <0x03>;
                        #interrupt-cells = <0x01>;
                        #size-cells = <0x02>;
                        interrupts = <0x00 0x93 0x04 0x00 0x94 0x04>;
                        interrupt-names = "pcie\0msi";
                        interrupt-map-mask = <0x00 0x00 0x00 0x07>;
                        interrupt-map = <0x00 0x00 0x00 0x01 0x01 0x00 0x8f 0x04>,
                                                 <0x00 0x00 0x00 0x02 0x01 0x00 0x90 0x04>, 
                                                 <0x00 0x00 0x00 0x03 0x01 0x00 0x91 0x04>,
                                                 <0x00 0x00 0x00 0x04 0x01 0x00 0x92 0x04>;
                        msi-parent = <0x2d>;
                        ranges = <0x02000000 0x0 0x00000000>, // PCI address
                                            <0x5 0x00000000>, // CPU address
                                            <0x0 0x80000000>; // Size
                        dma-ranges = <0x2000000 0x00 0x00 0x00 0x00 0x00 0xc0000000>;
                        phandle = <0x2d>;

                        pci@0,0 {
                                device-type = "pci";
                                #address-cells = <0x03>;
                                #size-cells = <0x02>;
                                reg = <0x00 0x00 0x00 0x00 0x00>;

Can you give me a helping hand to get this up and running?

I solved the issue,

You have to change the /boot/dts/bcm2711-rpi-cm5.dts overlay file

add ----> max-link-speed = <1>; to node 
pcie@7d500000 { ... }

Topic closed.