Since AMD's acquisition of Xilinx and working to broaden the portfolio of offerings for the data center, more AMD-Xilinx drivers have been working their way toward the mainline Linux kernel. There's been upstreaming efforts such as the Versal EDAC driver , generating DeviceTree nodes for PCI devices , Versal watchdog driver , QDMA driver , CDX bus support , and more. The latest driver working its way toward the mainline kernel from AMD is the AXI 1-wire driver.

The AXI 1-Wire Driver was posted on the Linux kernel mailing list earlier this month and already a second revision to that driver was posted at the end of last week. This is the host driver for supporting the AMD-Xilinx 1-Wire programmable logic IP block. As explained in the patches, this 1-wire IP block is used for guaranteeing protocol timing for driving off-board devices such as thermal sensors, PROMs, and more. This AMD driver is seeking to be included as part of the Linux kernel's 1-wire "W1" subsystem .

The AMD AXI 1-wire driver is currently undergoing review on the LKML .

This AXI 1-wire IP block doesn't appear to be new IP but rather only now being submitted for mainline inclusion. There are various AMD/Xilinx AXI 1-wire references going back some months/years on Wiki documentation pages, forums, etc. In any event, it's nice seeing all of the upstreaming efforts this year on the Xilinx side.