Open Source Summit + Embedded Linux Conference North America 2026

When our production power‑management IC (PMIC) firmware moved to Zephyr, it opened the door for us to streamline our development and validation workflow. Our production firmware used a proprietary RTOS, which required maintaining a separate codebase for pre-silicon validation. By standardizing on Zephyr, an RTOS supported across hundreds of MCUs, we were able to use single application codebase across the entire development flow.

In this talk, I’ll describe how we built a Zephyr‑based pre-silicon PMIC testing platform, enabling the same application to run on both the production as well as pre‑silicon hardware running on a completely different SoC (Raspberry Pi Pico) and a custom evaluation kit. I will briefly outline the software architecture: the application running on Zephyr with board configuration defined through device tree and Kconfig. I will also cover the hardware architecture that connects the Pico to the PMIC evaluation kit, and the Twister‑based Hardware-in-loop tests we incorporated for validation.

I’ll close by highlighting how Zephyr’s broad hardware support and tooling helped simplify our workflow and reduce duplicate effort across multiple platforms.