Chaitanya Sandeep Gaikwad enhanced wireless functionality in the renesas/zephyr repository by upgrading the Infineon Wi-Fi driver to version 1.2.1 and integrating the whd-expansion module. Working primarily in C and CMake, Chaitanya introduced a new Wi-Fi module configuration and updated the hal_infineon dependency to its latest revision, ensuring compatibility and improved stability. The work focused on embedded systems and driver development, consolidating changes to reduce integration risks and lay the foundation for future features. Over the course of the month, Chaitanya delivered a focused, in-depth feature upgrade that strengthened Wi-Fi support without introducing new bugs.