February 2026 monthly summary for Zephyr4Microchip/zephyr focused on stabilizing timer interfaces and expanding BURTC support across Silicon Labs S2/S3, delivering clearer HAL naming conventions and stronger default configurations. Business value delivered includes reduced integration risk, more reliable timer behavior, and broader hardware coverage enabling faster feature adoption.

August 2025: EFR32xG28 radio module integration into Zephyr build system for zephyrproject-rtos/hal_silabs. Implemented inclusion of binary blobs and external dependencies for the EFR32xG28 module, including library files, SHA256 checksums, and remote URLs, wired through zephyr/module.yml to enable EFR32xG28 radio capabilities in Zephyr builds. This work ensures hardware-ready builds and reproducible assets, aligning with the roadmap and reducing integration risk for future releases. Commit: c4d2f7bcfb591bc59b7b9f800a10017f62de23cf ("zephyr: Pull in the RAIL blobs for the EFR32xG28 module").

In July 2025, delivered expanded MCU support for the Zephyr SILabs HAL by enabling EFR32ZG28 support and extending tooling to cover the ZG28 and ZG23 families. This work broadens hardware coverage, improves build readiness for newer Silicon Labs MCUs, and positions customers to adopt EFR32ZG28 without manual tooling changes.

May 2025 monthly summary for zephyrproject-rtos/hal_silabs: Delivered foundational EFR32ZG28 device support by adding variant-specific header files and peripheral mappings, enabling multi-variant SDK compatibility and faster customer onboarding. Commit cef74d910c0404f6a06088fb443e4a486ada08d5: simplicity_sdk: Add SDK files for the EFR32ZG28 modules. No major bugs fixed this month. This work expands hardware coverage, improves maintainability, and demonstrates skills in variant-driven header design, memory mappings, and SDK integration.