Jun 2016 – Jun 2018 · 2 yrs · Bengaluru Area, India

• Developed system software on hybrid platform powered by ARMv8 Cortex-A series multi-core processors (like A53, A55, A73, A75).
• Developed baremetal software stack, with CPU, platform specific peripheral tests
• Implemented PCI Express (Gen4) library on baremetal environment
• Ported and customized Linux kernel, and developed device driver for different peripherals like UFS
• Ported multiple boot loaders - U-Boot, arm-trusted-firmware

May 2014 – Jun 2016 · 2 yrs 1 mo · Bangalore

• Developed board-support-package for Microchip PIC32MZ[DA] family of micro-controllers. Responsible for design and development of software components – device drivers, demo applications, distribution systems – conducting training sessions, showcasing capabilities, all required for realizing bare metal into customer solutions.
• Ported mainline Linux and U-Boot on MIPS 14Kec based PIC32 architecture.
• Developed Linux device driver for various modules - clock, timer, SPI, SQI, DMA, PWM, output-
• compare, input capture, watchdog, CPU Frequency, platform.
• Also developed U-Boot drivers for most of modules – clock, pinctrl, gpio, DDR2 SDRAM, serial,
• board, arch, Ethernet, USB, SPI, SQI, NOR Flash.
• Integrated BSP with Buildroot for build-distribution system.
• Up-streamed patches to U-Boot and Linux mainline.
• Developed various demo applications using ALSA, DirectFB, Lighttpd, QT.
• Analysed system performance using benchmarking tools at various system usages and with different tuning parameters.

Aug 2010 – May 2014 · 3 yrs 9 mos

• Designed common driver access interface and developed Windows/Linux kernel driver for USB. Also ported PCI/PCIE drivers to same interface.
• Implemented SPI, I2C, GPIO, UART, PCI, PCIE, PCIeRC drivers for Linux.
• USB EHCI, ethernet, Wireless Driver developement and porting.
• MIPS Linux/U-Boot porting for ZN SOC and added platform support.
• Porting transcode applications to ZN platforms and tuning for performance.
• Feature enhencement in bootcode.
• Firmware debugging.

Mar 2007 – Aug 2010 · 3 yrs 5 mos

• Designed & implemented Linux kernel modules of CDI all related to PVR and audio. Designing memory map, implementing unified memory manager, U-Boot porting.
• Integrating various NDS Middle-Wares (MHA, MOR, and Darwin) on top of CDI drivers for different customer profiles (DVR, Zapper).

Aug 2006 – Mar 2007 · 7 mos

• Designed & developed Windows device driver for PCI 9054 card capable of working in both 32bit and 64 bit windows versions.
• Further, ported the same driver for PCI9050 card.

Aug 2005 – Jul 2006 · 11 mos

• Implemented the file system of a propriety RTOS for ATA Flash and Compact Flash. The design of the file system was based on combination of FAT12 & FAT16.

Mar 2004 – Feb 2005 · 11 mos

• Designed the algorithm for assigning Location Area (LA) to specific Base Stations (BS) so that inter-LA roaming remains minimal. Algorithm was based on Agglomerative Hierarchical Clustering. Algorithm also able to decide on required number of BS and their respective position in Service Area.
• Implemented the algorithm in C. Implementation was tricky as algorithm does not follow greedy approach; there was a chance to back-track to n-iteration.

Mar 2004 – Apr 2004 · 1 mo

• Implemented the algorithm on decision support system for rapid tooling requirement analysis and tooling process selection. Algorithm was based on process capability mapping in quality functional deployment (QFD) against a set of tooling requirements those are prioritize through pair-wise comparison using analytical hierarchical process (AHP).