Embedded Linux Kernel & MIPI Validation Engineer

Embedded Linux Kernel & MIPI Validation Engineer

San Jose, CA, USA

Full-Time

Role Overview

We are seeking a highly skilled engineer with deep expertise in MIPI protocol validation, SoC bring-up, and Linux kernel driver development. The ideal candidate will have strong hands‐on experience working with display/camera interfaces, high‐speed PHYs, and system-level debugging on real hardware. This role requires working across hardware, firmware, and kernel layers to ensure robust interface performance and system stability.

Key Responsibilities

MIPI Protocol Validation

• Perform deep-dive validation of MIPI D‐PHY, C‐PHY, DSI‐2, and CSI‐2 protocols.
• Use oscilloscopes, protocol analyzers, and logic analyzers to verify:
• • Packet formats and ECC/CRC validation
  • HS/LP transitions and timing parameters
  • Lane calibration, skew, and signal integrity
• Debug PHY issues involving voltage swing, termination, clocking, and synchronization.

Cross‐Platform Bring‐Up

• Lead initial power‐on, bootloader bring-up, and low‐level hardware initialization for new boards.
• Work across various SoC platforms to validate connectivity, pinmux, clocks, resets, and peripheral initialization.
• Conduct board‐level electrical checks and assist with hardware debugging.

Linux Kernel Development

• Develop, port, and optimize Linux kernel drivers in DRM/KMS (Display) or V4L2 (Camera).
• Debug kernel crashes, panel bring‐up issues, and synchronization errors.
• Work with kernel logs, traces, and low-level kernel subsystems.

Display & Camera Interface Management

• Implement and debug DSI Command Mode (DBI) and Video Mode (DPI) bring-up.
• Validate TE (Tearing Effect) synchronization and frame update behavior.
• Work with camera sensor initialization, link validation, and frame data integrity.

System Configuration & Debug

• Develop and maintain .dtsi / .dtbo device tree files for:
• • Power sequencing
  • Reset trees
  • PLL and high‐speed clock configuration
  • GPIO/pinmux definitions
• Troubleshoot system-level issues across hardware, kernel, and middleware layers.

Required Skills & Experience

• Strong understanding of MIPI D‐PHY, C‐PHY, DSI, CSI‐2 standards.
• Experience with oscilloscope probing, high-speed signal validation, and SI fundamentals.
• Proficiency in Linux kernel debugging, driver development, and board bring‐up.
• Hands-on experience with protocol analyzers, logic analyzers, and lab equipment.
• Ability to read schematics, PCB layouts, and debug electrical-level issues.
• Experience with display panels, camera sensors, or SoC multimedia subsystems.

Good to Have

• Experience with panel timing, display drivers, LED drivers, or imaging pipelines.
• Understanding of bootloaders (U-Boot), firmware initialization, or RTOS.
• Exposure to scripting (Python, Bash) for automation or test frameworks.
• Knowledge of signal integrity concepts (impedance, skew, jitter, eye diagram basics).