How to install serial controller driver on fedora 41( Serial controller: Asix Electronics Corporation AX99100 PCIe to Multi I/O Controller)

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CI 100.1: 0700 Serial controller (16550)
  [Created at pci.386]
  Unique ID: NXNs.pf2lVCOBOiA
  Parent ID: z8Q3.r6n8wVbAYeE
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:01:00.1
  SysFS BusID: 0000:01:00.1
  Hardware Class: unknown
  Model: "Asix Electronics Corporation (Wrong ID) Serial Port"
  Vendor: pci 0x125b "Asix Electronics Corporation"
  Device: pci 0x9100 "AX99100 PCIe to Multi I/O Controller"
  SubVendor: pci 0xa000 "Asix Electronics Corporation (Wrong ID)"
  SubDevice: pci 0x1000 "Serial Port"
  Driver: "serial"
  I/O Ports: 0xe020-0xe027 (rw)
  Memory Range: 0xdf105000-0xdf105fff (rw,non-prefetchable)
  Memory Range: 0xdf104000-0xdf104fff (rw,non-prefetchable)
  IRQ: 123 (no events)
  Module Alias: "pci:v0000125Bd00009100sv0000A000sd00001000bc07sc00i02"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #16 (PCI bridge)
3

You would need to ask the vendor of the card for a driver and try and build it on fedora as there does not appear to be kernel support for this chip.

4

Looks like they do provide source code to build the required kernel module: https://www.asix.com.tw/en/product/Interface/PCIe_Bridge/AX99100

The instructions provided in the readme file is a bit thread-bare, but ought to work given all of the dependencies are installed.

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