Manivannan Sadhasivam
Senior Staff Engineer at Qualcomm
Tamil Nadu, India
Summary
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Rockstar🎓
Top SchoolManivannan Sadhasivam is a Senior Staff Engineer with 11 years of experience specializing in Linux kernel and embedded systems, currently working on upstream support for Qualcomm chipsets. He maintains multiple ARM sub-architectures and critical subsystems including PCI Controller drivers, PCI Endpoint, MHI bus, and UFS, and has been instrumental in upstreaming Qualcomm MHI and QRTR stacks. An open-source stalwart, he contributes to the mainline Linux tree (torvalds/linux) and has notable work enabling PCIe endpoints and power-management fixes for Qualcomm and Tegra platforms. He also upstreamed and maintained peripheral subsystems in Zephyr—authored LoRa/LoRaWAN and LED subsystems—and has a track record of handing off maintainership responsibly. Based in Tamil Nadu, India, he pairs deep low-level device expertise with practical board support and IoT library contributions (e.g., MRAA), bridging SoC bring-up to production-ready kernel drivers.
11 years of coding experience
9 years of employment as a software developer
High School Computer Science, High School Computer Science at K.V.K.N Matric Higher Secondary School, KanjikovilBachelor’s Degree Electronics and Communication Engineering, Bachelor’s Degree Electronics and Communication Engineering at K.S.Rangasamy College of Technology
English, Tamil
Stackoverflow
53reputation
127reached
0answers
1question
Github Skills (27)
c-language10
architecture10
linux10
c1110
linux-kernel10
power-management10
c1710
gpio10
pmm10
device-tree10
dts10
u-boot10
sys10
dt10
arm10
Programming languages (14)
Github contributions (5)
eclipse/mraa
Jun 2017 - May 2019
Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:30 commits, 24 PRs, 6 pushes in 1 year 10 months
Contributions summary:Manivannan made significant contributions to the eclipse/mraa repository, focusing on low-level hardware interaction and platform-specific code. They added support for GPIO input pull-up/down modes, including C++ binding implementations, and integrated memory-mapped I/O for the Dragonboard410c platform. Further contributions include the addition of onboard LED support and the implementation of board-specific configurations, indicating a strong focus on embedded systems and hardware abstraction layers. The user also cleaned up and reorganized examples, demonstrating knowledge of the library's structure and use cases.
mraapythonintel-jouleraspberry-piedison
torvalds/linux
Aug 2022 - Mar 2023
Linux kernel source tree
Role in this project:System Architect / Embedded Systems Engineer
System Architect / Embedded Systems EngineerContributions:50 commits in 6 months
Contributions summary:Manivannan primarily contributed to the Linux kernel source tree by modifying Device Tree Source (DTS) files and C code related to Qualcomm (QCOM) and NVIDIA (Tegra) based embedded systems. Their contributions focused on adding and modifying properties within DTS files to configure PCI endpoint controllers, add interrupt configurations, and improve the device tree structure for various System on a Chip (SoC) platforms. The user also addressed issues related to power management, particularly during system suspend/resume cycles, by moving cleanup operations and modifying PM levels.
kernellinux-kernellinuxkernel-source
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