Request to Add Support for Sagemcom Fast 5866T

[sipitongyo]

Hello LEDE Developers,

I would like to request device support for the Sagemcom Fast 5866T router/modem.

Device Information:

• Model: Sagemcom Fast 5866T
• Brand: Sagemcom
• Type: 5G CPE / Router
• Chipset / Platform: Qualcomm Snapdragon X55 (SDX55, possibly combined with IPQ807x)
• CPU Architecture: ARM64 (quad-core)
• Memory: 1 GB RAM
• Storage: 256 MB NAND Flash
• Wi-Fi: Dual-band (2.4 GHz & 5 GHz, Wi-Fi 6 capable)
• Ports: 1 × WAN/LAN (RJ-45), 2 × LAN, USB-C (power/data)
• OS (stock): Sagemcom OEM firmware based on Android/Linux

Reason for request:
The Sagemcom Fast 5866T is a common 5G home router distributed by several ISPs in Asia and Europe.
It has good hardware capabilities and is based on a Qualcomm platform that is already partially supported in OpenWrt (IPQ807x/SDX55).
Adding support would enable community development, improved performance, and open-source firmware options for users.

What I can provide for developers:

• Full hardware photos (board, ports, chipset)
• Boot logs (UART/ADB if needed)
• Access to the device for testing (remote or local)

Please let me know what specific information or dumps are required to begin adding support.
I’m willing to help collect all needed data.

Thank you for your work on LEDE!