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Tim Harvey

PROFILE

Tim Harvey

Thomas Harvey developed and maintained embedded platform features across flipperdevices/u-boot, coolsnowwolf/immortalwrt, and DragonBluep/openwrt, focusing on hardware enablement, driver integration, and network stack reliability. He implemented device tree and kernel enhancements for Gateworks Venice boards, delivered production-ready C drivers such as the ds1672 RTC, and improved DRAM and PCIe configuration for robust board support. Using C, Device Tree, and shell scripting, Thomas addressed low-level issues like DMA buffer allocation and network packet alignment, ensuring stable boot-time networking and hardware monitoring. His work demonstrated depth in embedded systems, kernel development, and configuration management, resulting in maintainable, production-grade solutions.

Overall Statistics

Feature vs Bugs

69%Features

Repository Contributions

45Total
Bugs
8
Commits
45
Features
18
Lines of code
5,408
Activity Months9

Work History

January 2026

1 Commits • 1 Features

Jan 1, 2026

January 2026 highlights: Delivered TPM-TIS SPI support for TCG TIS 1.3 in DragonBluep/openwrt, adding a kernel module (tpm-tis-spi) to support TPM security chips connected to a standard non-TCG SPI master. This work enhances hardware security integration and broadens OpenWrt compatibility. The implementation is backed by a focused kernel-level change and provides a foundation for broader TPM-enabled deployments.

September 2025

1 Commits

Sep 1, 2025

September 2025 monthly summary for flipperdevices/u-boot focused on stabilizing the embedded networking stack and delivering robust memory handling for network data. The primary delivery this month was a targeted bug fix that aligns LWIP network packet buffers to PKTALIGN, reducing misalignment risks, ensuring correct memory access, and improving overall network data handling performance across platforms. This aligns with our goal of reliable boot-time networking and device communication.

July 2025

9 Commits • 2 Features

Jul 1, 2025

Concise monthly summary for performance review focusing on business value, technical achievements, and cross-repo impact for 2025-07. Highlights include delivering USB3/OTG support on i.MX95 in U-Boot, stabilizing network initialization with LWIP, memory configuration and debugging enhancements for Venice LPDDR4, and a critical fix to GSC HWMon display scaling.

June 2025

1 Commits • 1 Features

Jun 1, 2025

Implemented and integrated the Dallas/Maxim ds1672 RTC driver into the flipperdevices/u-boot repository for June 2025. Delivered a production-ready C driver with complete runtime interactions, and ensured build system integration via Kconfig and Makefile updates. Enabled reliable timekeeping for supported hardware, improving log timestamps, boot-time behavior, and time-based scheduling across embedded platforms. Change committed with a focused commit message.

May 2025

19 Commits • 7 Features

May 1, 2025

May 2025 focused on delivering core platform readiness and feature enhancements across the u-boot repository, with targeted DRAM/timing improvements, PCI/NETC readiness, GPT and Venice feature expansions, and broader hardware compatibility. Key outcomes include enabling early PCI ECAM initialization for imx95_evk, enhanced Venice scripting commands, GPT support across imx8m Venice configurations, modular DRAM timing/memory layout improvements for GW Venice boards, and broadened hardware support including GW82XX-2X and FSA integration, plus lwIP networking stack enhancements for reliability and performance.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 monthly summary for DragonBluep/openwrt: Focused on delivering hardware-specific network configuration for Gateworks Venice single-port boards, enabling reliable WAN on eth0 and overriding LAN defaults to suit Venice hardware. This reduces post-deployment configuration and improves deployment readiness for Gateworks Venice gateways.

February 2025

2 Commits • 1 Features

Feb 1, 2025

February 2025: ImmortalWRT enhancements to sysupgrade for Gateworks IMX8M and Venice (IMX Cortex-A53) support. Implemented hardware compatibility checks and updated SUPPORTED_DEVICES to enable upgrades on Venice without forcing. Fixed sysupgrade image device support for Venice, improving upgrade reliability. Result: smoother OTA upgrades for new IMX8M/Venice devices, reduced manual intervention, and a solid foundation for future IMX board support.

January 2025

2 Commits • 1 Features

Jan 1, 2025

January 2025 (2025-01) monthly summary focusing on hardware bring-up, network reliability, and driver stability for coolsnowwolf/immortalwrt. Key work included two targeted changes: (1) a board-specific GW82xx-2x Network Interface Configuration ensuring proper WAN/LAN mapping (eth0 as WAN, eth1 as LAN) with commit d2eaaa90d502fa418d7d9bb8d4e6ccbe0131c832; (2) a DMA Buffer Allocation Fix for ath11k on iommuless systems that replaces kzalloc and dma_map_single with dma_alloc_noncoherent to resolve SWIOTLB issues and driver initialization failures (commit fa50e53aa92e4db9dfe091e7dd55c3fc2024ad13). These changes improve hardware bring-up, network readiness, and overall system stability.

December 2024

9 Commits • 4 Features

Dec 1, 2024

December 2024 monthly summary: Delivered targeted hardware compatibility, stability, and monitoring improvements for Gateworks Venice-based platforms, with parallel progress in U-Boot for SPI clock accuracy and system monitoring. The work enhances hardware support, reliability, and maintainability, enabling smoother deployments and clearer product alignment across boards and configurations.

Activity

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Quality Metrics

Correctness93.2%
Maintainability91.8%
Architecture91.4%
Performance86.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

CDTSDevice TreeMakefileShellshell

Technical Skills

ARM ArchitectureBoard Support PackageBoard Support Package (BSP)Board Support Package (BSP) DevelopmentC ProgrammingConfiguration ManagementDMA ManagementDRAM ConfigurationDebuggingDevice DriversDevice SupportDevice TreeDevice Tree ConfigurationDriver DevelopmentEmbedded Systems

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

flipperdevices/u-boot

Dec 2024 Sep 2025
5 Months active

Languages Used

CDTS

Technical Skills

Configuration ManagementDevice TreeDriver DevelopmentEmbedded SystemsSoC ArchitectureBoard Support Package

coolsnowwolf/immortalwrt

Dec 2024 Feb 2025
3 Months active

Languages Used

CDevice TreeshellMakefileShell

Technical Skills

Device Tree ConfigurationDriver DevelopmentEmbedded SystemsKernel DevelopmentLinux KernelPCIe

DragonBluep/openwrt

Apr 2025 Jan 2026
2 Months active

Languages Used

ShellMakefile

Technical Skills

Embedded SystemsNetwork ConfigurationLinux module developmentembedded systemskernel development

geerlingguy/linux

Jul 2025 Jul 2025
1 Month active

Languages Used

C

Technical Skills

Device DriversHardware MonitoringKernel Development

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