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Frank Wunderlich

PROFILE

Frank Wunderlich

Frank-W contributed to embedded Linux and hardware enablement projects, focusing on device tree, driver, and bootloader development. In flipperdevices/u-boot, he added PCA9545 I2C multiplexer support, enhancing multi-bus hardware integration for platforms like the Bananapi R4 using C and I2C driver expertise. For geerlingguy/linux, he improved MT7988/MT7530 device tree bindings, refining interrupt handling and DMA mapping to strengthen MediaTek networking support. In DragonBluep/openwrt, Frank-W implemented 8GB RAM support and RAM-based boot logic for the Bananapi R4 Pro, leveraging C, Makefile scripting, and build system management to expand hardware compatibility and boot reliability.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

12Total
Bugs
0
Commits
12
Features
4
Lines of code
290
Activity Months3

Work History

January 2026

5 Commits • 2 Features

Jan 1, 2026

January 2026 — DragonBluep/openwrt: Implemented foundational 8GB RAM support for Bananapi R4 Pro on MT7988, including firmware and U-Boot builds, and RAM-based boot path selection. Key work included RAM-detection and bootfile selection logic; image optimizations for eMMC/SDMMC across multiple boot configurations; enabling reliable 8GB configurations and multi-boot versatility. Impact: expands hardware support, improves boot reliability, and unlocks higher-memory performance for routing and network services. Demonstrated strengths in embedded Linux, MTK U-Boot tooling, and image pipelines.

July 2025

6 Commits • 1 Features

Jul 1, 2025

July 2025 – geerlingguy/linux: MT7988/MT7530 device-tree bindings enhancements to strengthen MTK networking support and maintainability. Implemented six commits across dt-bindings to: fix MT7988 MAC subnode naming; support up to 8 IRQs with IRQ names; add sram MMIO mapping for DMA; introduce internal dsa-port for MT7988 internal PHY-mode; and enable internal MDIO bus for MT7988 GE PHYs. Impact: improved hardware compatibility on MT7988/MT7530 platforms, easier integration and troubleshooting, and clearer, maintainable bindings. Skills demonstrated: device-tree bindings, MTK network bindings, DSA, MDIO, IRQs, and DMA.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary focusing on key accomplishments in U-Boot for hardware I2C multiplexing support. Delivered PCA9545 I2C multiplexer support for flipperdevices/u-boot, enabling recognized use of the 4-channel PCA9545 and targeted applicability to the Bananapi R4.

Activity

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Quality Metrics

Correctness100.0%
Maintainability95.0%
Architecture95.0%
Performance95.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CMakefileYAMLyaml

Technical Skills

C programmingDevice TreeDriver DevelopmentEmbedded SystemsI2CKernel DevelopmentLinux kernel developmentMakefile scriptingbootloader developmentbuild system configurationbuild system managementembedded systemsfirmware development

Repositories Contributed To

3 repos

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

geerlingguy/linux

Jul 2025 Jul 2025
1 Month active

Languages Used

YAMLyaml

Technical Skills

Device TreeEmbedded SystemsKernel Development

DragonBluep/openwrt

Jan 2026 Jan 2026
1 Month active

Languages Used

CMakefile

Technical Skills

C programmingLinux kernel developmentMakefile scriptingbootloader developmentbuild system configurationbuild system management

flipperdevices/u-boot

Jun 2025 Jun 2025
1 Month active

Languages Used

C

Technical Skills

Driver DevelopmentEmbedded SystemsI2C

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