Contributed to the zephyrproject-rtos/zephyr repository by enhancing the Designware I2C driver with optional SDA_HOLD_TX and SDA_HOLD_RX parameters, enabling precise control over SDA line timing during I2C operations. This feature involved updates to the driver’s initialization process and device tree bindings, allowing for improved timing precision, reliability, and configurability across various embedded boards. The work was implemented in C, leveraging expertise in embedded systems and I2C protocol. All changes were consolidated in a signed-off commit, ensuring traceability and maintainability, and were validated through clean CI builds while preserving backward compatibility and aligning with kernel abstraction goals.