flipperdevices/u-boot
Jan 2025 – Apr 2026
2 Months active
Languages Used
CDTS
Technical Skills
Clock ManagementDevice TreeEmbedded SystemsKernel DevelopmentC programmingdevice driver development
Sam Shih
PROFILE
Sam Shih
Worked on the flipperdevices/u-boot repository, focusing on Mediatek MT7629 clock management and device tree integration for embedded systems. Addressed peripheral clock gating reliability by correcting misdefinitions in the MT7629 clock tree and introduced a new structure to improve clock gate retrieval. Migrated board configuration to use the upstream device tree, consolidating differences for easier maintenance and compatibility. Enhanced the Mediatek clock subsystem by optimizing parent rate lookups and restoring support for fixed PLL parent clocks, which improved boot-time reliability and code maintainability. Utilized C and DTS, applying expertise in device driver development, kernel development, and embedded systems engineering.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
2
Lines of code
860
Activity Months2
Your Network
643 peopleSame Organization
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Work History
April 2026
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for flipperdevices/u-boot. Delivered Clock Subsystem Improvements in the Mediatek clock tree, including cleanup of redundant clk_ops forward declarations in clk-mtk.c, optimization of parent rate lookups via a grandparent device variable in mtk_find_parent_rate, and restoration of support for fixed PLL parent clocks in the APMIXED domain by updating the parent rate lookup to consider both mtk_clk_fixed_pll_ops and mtk_clk_apmixedsys_ops. These changes reduce redundant device lookups, fix a regression after refactoring, and improve boot-time reliability and clock accuracy. Technologies demonstrated include C, Mediatek clock framework, and Linux U-Boot clock APIs. Business impact: more reliable boot and clock paths, easier maintenance.
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for flipperdevices/u-boot. Delivered Clock Subsystem Improvements in the Mediatek clock tree, including cleanup of redundant clk_ops forward declarations in clk-mtk.c, optimization of parent rate lookups via a grandparent device variable in mtk_find_parent_rate, and restoration of support for fixed PLL parent clocks in the APMIXED domain by updating the parent rate lookup to consider both mtk_clk_fixed_pll_ops and mtk_clk_apmixedsys_ops. These changes reduce redundant device lookups, fix a regression after refactoring, and improve boot-time reliability and clock accuracy. Technologies demonstrated include C, Mediatek clock framework, and Linux U-Boot clock APIs. Business impact: more reliable boot and clock paths, easier maintenance.
April 2026
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered two critical changes in flipperdevices/u-boot focusing on MT7629 clock management and upstream device tree alignment. The clock fix fixes misdefinition issues and ensures reliable peripheral clock gating for MT7629, while the upstream DT integration reduces maintenance burden and improves upstream compatibility across platforms.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025: Delivered two critical changes in flipperdevices/u-boot focusing on MT7629 clock management and upstream device tree alignment. The clock fix fixes misdefinition issues and ensures reliable peripheral clock gating for MT7629, while the upstream DT integration reduces maintenance burden and improves upstream compatibility across platforms.
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Quality Metrics
Correctness96.0%
Maintainability92.0%
Architecture92.0%
Performance92.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CDTS
Technical Skills
C programmingClock ManagementDevice TreeEmbedded SystemsKernel Developmentdevice driver developmentembedded systemskernel development
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