Linux PCI Device Lead
- People Tech
- 3 - 7 years
- Hyderabad
- 19 days ago
- Email to a friend
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Job Description
Role & responsibilities
- Architect and Lead PCI Subsystem Development:
- Drive design, development, and maintenance of PCI and PCIe subsystems and drivers in the Linux kernel.
- Ensure seamless enumeration, configuration, power management, and hotplug support for PCI devices.
- Device Enablement and Bring-up:
- Lead platform bring-up activities involving PCI/PCIe devices (e.g., network, storage, GPU, NVMe).
- Validate and debug device-tree or ACPI configurations for PCI host bridges and endpoints.
- Kernel and Firmware Interaction:
- Collaborate with firmware/bootloader teams for correct BAR, MSI/MSI-X, and IOMMU configurations.
- Work closely with architecture teams to support secure boot and DMA protection for PCI devices.
- Performance and Power Optimization:
- Analyze PCI bandwidth, latency, and power bottlenecks.
- Implement ASPM, LTR, and other low-power states in compliance with PCIe specs.
- Debugging and Issue Resolution:
- Use Linux tools (lspci, setpci, tracepoints, ftrace, perf, etc.) and oscilloscopes/analyzers for low-level debugging.
- Root-cause platform PCI failures and compatibility issues across hardware and kernel versions.
- Upstream and Compliance:
- Contribute patches upstream to the Linux kernel PCI subsystem.
- Ensure compliance with PCI-SIG and Linux kernel community best practices.
- Cross-Team Collaboration:
- Interface with SoC, BIOS/UEFI, board, and validation teams to ensure robust PCIe device support across platforms
Required Expertise:
Deep understanding of Linux kernel internals, especially drivers/pci and subsystems like hot plug, MSI, IOMMU, DMA API.
Hands-on experience with PCIe Gen3/Gen4/Gen5 devices and related PHY bring-up issues.
Familiarity with ARM64 and x86 architectures, DT/ACPI handling for PCI devices.
Proficient in C programming, Linux kernel debugging (GDB, crash dumps), and tools like dmesg, lspci, pcie_check.
Expertise in power management (runtime, suspend/resume flows) for PCI devices.
Experience with Secure Boot, TrustZone, and virtualization passthrough (VFIO/SR-IOV) for PCIe devices is a strong plus.
Experience using Yocto, Buildroot, or other embedded Linux build systems
Job Classification
Industry: IT Services & ConsultingFunctional Area / Department: Engineering - Software & QARole Category: Software DevelopmentRole: Embedded Systems EngineerEmployement Type: Full timeContact Details:
Company: People TechLocation(s): Hyderabad
Keyskills: Embedded C PCIE Linux Kernel Driver Development Linux Internals
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