Building a Zephyr-Native Audio Framework With Sound Open Firmware

Explore the development of a Zephyr-native audio framework using Sound Open Firmware (SOF) in this 27-minute conference talk from the Linux Foundation. Discover the current audio stack and frameworks available in Zephyr, with particular emphasis on SOF - an open-source audio digital signal processing (DSP) firmware and SDK that provides essential infrastructure and tools for audio and signal processing development. Learn how SOF 2.0's integration with Zephyr RTOS has simplified and improved its codebase, while understanding the challenges of its tight coupling to Linux host OS drivers that currently limits its use primarily to MPUs. Examine the process of decoupling SOF from Linux to enable standalone operation on MCUs, transforming it into the premier audio framework for Zephyr. Delve into key technical aspects including replacing Linux-based host communication, modifying SOF firmware to operate without Linux-driven configuration, and leveraging Zephyr drivers for hardware control. Gain insights into the roadmap for making SOF a truly Zephyr-native audio framework and participate in discussions about future development steps in this emerging technology area.