linux4microchip-2026.04

linux4microchip-2026.04 Release

This is the PolarFire SoC and PIC64GX 2026.04 Linux4Microchip Buildroot External release.

The main changes in this release include the support for Buildroot 2025.02.11 as well as bumps to Linux, U-Boot and Device Tree Overlays.

Changes since last release :

• Update U-Boot version to linux4microchip-2026.04
• Update Linux to linux4microchip-2026.04.1 (using Linux Kernel version 6.18.17)
• Update Device Tree Overlays to linux4microchip-2026.04
• Update supported buildroot version to 2025.02.11
• Addition of the linuxptp package
• Unify U-Boot defconfigs for SMP, AMP and NOR

Important

PIC64GX ONLY:
The PIC64GX Curiosity Kit release includes improvements to SD card performance, as well as enhanced stability and compatibility across multiple SD card models. In addition, the PIC64GX HSS includes fixes related to SD card voltage selection.
As a result, this PIC64GX release is not backward compatible with previous versions. When using the Linux4Microchip v2026.04 release, please update the PIC64GX HSS to v2026.04 or later.