Jan 2013 – Aug 2019 · 6 yrs 7 mos · Bengaluru, Karnataka, India

• Currently, working as a member of clocks kernel team.
• A clock specific to a domain say display, host, pcie, memory, power, etc., is a quartz crystal located on the specific domain to help synchronize all operations of that particular domain. Again, each of clock domains is synchronized by a super or master clock domain.
• Clocks is one of the primary components of kernel which includes programming of clocks, whether master or domain specific, i.e. PLLs / FLLs in GPUs in accordance to various performance levels, display and memory requirements. It also involves resolving dependencies between various clock domains and with master domain to help achieve better performance.
• My work as a clock domain engineer was to help develop algorithms and data structures for addition of new features, calculation of various dividers, resolution of dependencies across clock domains to achieve better accuracy and performance. Some of the features of clocks are noise aware, phase locked loop, frequency locked loops, dynamic frequency scaling, clock gating, overclocking etc.,.
• Since, proper functioning of all domains in GPU depended on clocks my responsibilities consisted of below
• interact with hardware teams for development of new features, along with pre silicon verification as in emulation and RTL.
• develop test cases to cover every corner case for emulation and silicon verification
• lead board bringup starting with clocks verification along with interacting domains in GPUs
• post silicon verification on windows and linux for resolution of issues found
• Besides above also worked in core team for a brief period which involved designing and implementation of data structures for the entire kernel code.

Jul 2011 – Jan 2013 · 1 yr 6 mos · Bangalore, India

• Developed Linux Kernel Modules for OMAP Display Subsystem
• Develop and managed the Display Controller
• Support for TILER
• Dynamic debug support