The upcoming Linux 6.19 kernel cycle is set to introduce support for the Realtek RTL8125K as a forthcoming Ethernet ASIC.
The Realtek RTL8125K doesn’t appear to have been formally announced yet or at least isn’t showing up anywhere prominent online. The Linux enablement patches coming for the Linux 6.19 kernel put the RTL8125K as an extension of the Realtek RTL8125D 2.5G Ethernet ASICs already launched and supported by the mainline Linux kernel last year.
Queued recently into the networking subsystem’s “net-next” code of new material coming for the Linux 6.19 merge window is this patch adding the RTL8125K support to the existing r8169 networking driver. Besides a new device ID, the only other driver-side difference with this new chip is also needign a different firmware binary.
The Realtek RTL8125K firmware was merged last week to the linux-firmware.git repository.
Long story short, once the Realtek RTL8125K 2.5G chip starts appearing in devices, the Linux support is ready to go with Linux 6.19+.
