Canyon Bliss focused on stabilizing SD/MMC support for the renesas/zephyr repository, addressing a build-time error in the SDMMC driver when operating in eMMC mode. By implementing a conditional path that selects the appropriate erase function based on the CONFIG_SDMMC_STM32_EMMC configuration, Canyon ensured reliable builds and improved compatibility across SD and eMMC devices. This targeted patch, developed in C and leveraging embedded systems and driver development expertise, reduced maintenance risk for eMMC-enabled deployments. The work demonstrated careful attention to configuration-driven behavior, resulting in a low-risk, maintainable solution that enhanced hardware support without introducing unnecessary complexity or feature bloat.