Linux PCI Device Lead @ People Tech

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

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Rs 0 - 50K PM Rs 50K - 1 LPA Rs 1.0 - 1.5 LPA Rs 1.5 - 2.0 LPA Rs 2.0 - 2.5 LPA Rs 2.5 - 3.0 LPA Rs 3.0 - 3.5 LPA Rs 3.5 - 4.0 LPA Rs 4.0 - 4.5 LPA Rs 4.5 - 5.0 LPA Rs 5 - 6 LPA Rs 6 - 7 LPA Rs 7 - 8 LPA Rs 8 - 9 LPA Rs 9 - 10 LPA Rs 10 - 12 LPA Rs 12 - 14 LPA Rs 14 - 16 LPA Rs 16 - 18 LPA Rs 18 - 20 LPA Rs 20 - 22 LPA Rs 22 - 24 LPA Rs 24 - 26 LPA Rs 26 - 28 LPA Rs 28 - 30 LPA Rs 30 - 32 LPA Rs 32 - 34 LPA Rs 34 - 36 LPA Rs 36 - 38 LPA Rs 38 - 40 LPA Rs 40 - 42 LPA Rs 42 - 44 LPA Rs 44 - 46 LPA Rs 46 - 48 LPA Rs 48 - 50 LPA Rs 50 - 75 LPA Rs 75 Lakh - 1C PA Rs 1 Crore+ PA

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Keyskills:   Embedded C PCIE Linux Kernel Driver Development Linux Internals