Linux PCI Device Lead

Job Description 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 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 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 and Power Optimization :
• Analyze PCI bandwidth, latency, and power bottlenecks.
• Implement ASPM, LTR, and other low-power states in compliance with PCIe 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 and Compliance :
• Contribute patches upstream to the Linux kernel PCI subsystem.
• Ensure compliance with PCI-SIG and Linux kernel community best Collaboration :
• Interface with SoC, BIOS / UEFI, board, and validation teams to ensure robust PCIe device support across Expertise :
• Deep understanding of Linux kernel internals, especially drivers / pci and subsystems like hotplug, 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.

(ref : hirist.tech)