NVIDIA/edk2-nvidia uefi-202506.4

edk2-nvidia-202506.4 (r38.5, IGX-SW 2.0)

Repository: NVIDIA/edk2-nvidia

Tag: uefi-202506.4

Published: 2026-05-12T15:09:14Z

Prerelease: no

Release notes:

New Features

• UfsControllerDxe: New PcdUfsMaxBurstLength PCD for per-platform UFS burst length configuration. T264 is set to a burst length of 64.

Bug Fixes

• EqosDeviceDxe: Enable de-assertion of power gates
• PcieControllerDxe: Fix T264 PCIe controller shutdown by changing ExitBootServices callback priority from TPL_NOTIFY to TPL_CALLBACK so client drivers (EHCI/XHCI) complete cleanup first; remove verbose debug prints and unnecessary 100ms post-PERST# delay

Refactoring and Maintenance

• T264: Enable Mgbe driver