Worked on the renesas/zephyr repository to enable SD-Card storage integration by implementing Active-High chip-select polarity in the Xilinx AXI QSPI driver. This targeted driver modification aligned the SPI interface with standard SD-Card requirements, supporting storage bring-up on Zephyr-based platforms. The work involved focused C programming and embedded systems expertise, resulting in a single, well-scoped feature commit with clear documentation and sign-off to streamline code review and future merges. By addressing hardware expectations at the driver level, the contribution reduced integration risk and deployment time for SD-Card support on boards utilizing the Xilinx QSPI interface within Zephyr.