Subhro

Rising Codementor

US$15.00

For every 15 mins

First 15 mins free for your first session

ABOUT ME

have 7+ years of experience in the field of Embedded software development.
My experience is mainly in the domain of Linux kernel, device drivers and bootloaders.

My main expertise include:

Linux Device driver development and porting
Linux kernel internals
Boot-Loaders development and Porting
Board bring-up
Linux file-system, system-calls, scheduler, MMU etc.
Very good system level understanding
Linux Network drivers - networking stack as well as adapter driver(MAC + PHY)
Specialization in Ethernet, Audio and DMA drivers.
Design and Development of multiple custom Inter-processor communication techniques.
Diagnostic Software Design and Development
Firmware Development
Flash programming utilities
Bug fixing

I have very good understanding of various Hardware Peripherals
: PCI/PCIe, SPI, I2C, MII/GMII/RGMII, XAUI, NOR/NAND etc.

CPU Architectures : ARM
Cores - Various ARM based chipsets like ARM7, ARM9, ARM Cortex A7, A9, M3
Socs:
Texas Instruments processors like:
Davinci series - DM644x, DM646x, DM816x(Netra series)
Arm only - DM350, DM355, DM365
DSP only - DM648 , C667X (Shannon series)
Mobile processors - OMAP3 series etc
Broadcom Processors:
XLP series

New Delhi (+05:30)

Joined September 2014

EXPERTISE

Network

7 years experience

I have developed multiple ethernet drivers from scratch. I have worked on fast and slow path systems.

Fiber optics Cryptocurrency EthernetCopperMac phyLink layerIp layerSwitchesMarvell phyBroadcom phyIPsec

ARM

7 years experience

Throughout my career I have worked on various ARM core processors staarting from ARM7 to ARM-Cortex-A9. Hence, I have a very good underst...

Throughout my career I have worked on various ARM core processors staarting from ARM7 to ARM-Cortex-A9. Hence, I have a very good understanding of the ARM internals.

ARMArm9Arm11

ARMArm9Arm11ARM Cortex-A9ARM Cortex-A7Link registerStack pointerProgram counter

Interrupts

7 years experience

I have worked extensively on interrupts and interrupt handling on ARM based systems.

IrqFiqInterrupt handlers

IrqFiqInterrupt handlersBottom halvesTaskletsSoft irqWork queue

Scheduler

7 years experience

I have a very good understanding of Linux scheduling mechanism and the various techniques used for the same.

Kernel schedulerJiffiesTick timer

Kernel schedulerJiffiesTick timerRound robinReal-Time SchedulingPriority inversionPre emption

MMU

7 years experience

I have a very good understanding of MMU and its various features.

CacheMemory management unitPage table

CacheMemory management unitPage tableVirtual addressPage swapFragmentationPage faultSegmentation faultData abortL1 l2 l3 cache

Boot Loaders

7 years experience

I have a very good understanding of various boot-loader. All the projects in the last 7 years dealt with multiple bootloaders like: Ubo...

I have a very good understanding of various boot-loader. All the projects in the last 7 years dealt with multiple bootloaders like: Uboot, X-loader, i-boot etc.

U-BootX loader

Device Driver

7 years experience

I have a very good understanding of Device drivers. All the projects in the last 7 years dealt with device driver design and development...

I have a very good understanding of Device drivers. All the projects in the last 7 years dealt with device driver design and development. Various drivers that I developed include: I2C, SPI, PCIe, Ethernet, Wi-fi, NAND/NOR, Audio, Video, DMA etc.

Platform driverBlock driverCharacter driver

Platform driverBlock driverCharacter driverNetwork driverProtocol driver

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