Developed and integrated a robust DWC3 Xilinx USB driver stack for the analogdevicesinc/linux repository, focusing on enhanced OTG support and advanced power management features. The work involved implementing kernel-level power state transitions and regulator integration to reduce runtime power consumption and enable flexible host or device operation. A kernel configuration option was introduced to allow selective enabling of OTG support, improving configurability and maintainability. All enhancements were delivered in C, leveraging expertise in device drivers, embedded systems, and kernel development. These changes improved USB subsystem compatibility, power efficiency, and laid the groundwork for future gadget-mode hibernation and advanced power states.