flipperdevices/u-boot
Oct 2025 – Jan 2026
4 Months active
Languages Used
CDTS
Technical Skills
Board Support Package (BSP) DevelopmentDevice TreeEmbedded Systems DevelopmentLinux Kernel ConfigurationC programmingLinux kernel development
Alexey Charkov
PROFILE
Alexey Charkov
Over four months, contributed to flipperdevices/u-boot by developing and enhancing Board Support Packages for Rockchip RK3576 and NanoPi M5 platforms. Focused on low-level bootloader and device driver development in C and DTS, enabling UFS storage boot support, power management, and reliable early boot paths. Implemented hardware integration features such as SPL boot from UFS and SPI flash, reset controller support, and device tree configuration to address evolving hardware requirements and upstream changes. Addressed boot reliability issues by aligning SPL and device initialization with hardware expectations, delivering upstream-ready patches and collaborating across hardware and software domains to streamline board bring-up.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
18Total
Bugs
1
Commits
18
Features
6
Lines of code
450
Activity Months4
Your Network
584 peopleShared Repositories
584
Liya HuangMember
Xu ZhangMember
Anurag DuttaMember
Aswath GovindrajuMember
Akashdeep KaurMember
Aniket LimayeMember
Aparna PatraMember
Aashvij ShenaiMember
Alexander DahlMember
Work History
January 2026
2 Commits • 1 Features
Jan 1, 2026In Jan 2026, delivered a reliability-focused feature for RK3576-based boards in flipperdevices/u-boot. Enabled the Rockchip reset controller in SPL and configured the RK3576 UFS reset pin in the device tree to ensure correct UFS controller initialization during early boot, reducing boot-time variability. The changes shore up the early boot path by using a hardware-controlled reset path for UFS, aligning SPL behavior with the boot ROM expectations and downstream U-Boot initialization. The work includes enabling the Rockchip reset driver in SPL and explicit pin configuration, with patches prepared for upstream submission and cherry-picked references where applicable. Commits include reset: rockchip: make device resets available in SPL (33580454198727ccaa935952761c9866c9db51ed) and arm64: dts: rockchip: Explicitly request UFS reset pin on RK3576 (95a7ef5651609dc4b66ba182dcd72355fa4ee274), with upstream context (upstream commit: 79a3286e61829fc43abdd6e3beb31b24930c7af6).
2 Commits • 1 Features
Jan 1, 2026In Jan 2026, delivered a reliability-focused feature for RK3576-based boards in flipperdevices/u-boot. Enabled the Rockchip reset controller in SPL and configured the RK3576 UFS reset pin in the device tree to ensure correct UFS controller initialization during early boot, reducing boot-time variability. The changes shore up the early boot path by using a hardware-controlled reset path for UFS, aligning SPL behavior with the boot ROM expectations and downstream U-Boot initialization. The work includes enabling the Rockchip reset driver in SPL and explicit pin configuration, with patches prepared for upstream submission and cherry-picked references where applicable. Commits include reset: rockchip: make device resets available in SPL (33580454198727ccaa935952761c9866c9db51ed) and arm64: dts: rockchip: Explicitly request UFS reset pin on RK3576 (95a7ef5651609dc4b66ba182dcd72355fa4ee274), with upstream context (upstream commit: 79a3286e61829fc43abdd6e3beb31b24930c7af6).
January 2026
December 2025
8 Commits • 2 Features
Dec 1, 2025December 2025: Delivered cross-board UFS boot support and reliability improvements for flipperdevices/u-boot. Implemented SPL boot from UFS for RK3576 and NanoPi M5, added RK3576 UFS GPIO reset support, enabled NanoPi M5 UFS in the device tree, and fixed EVB1 boot issues caused by upstream DTS changes. These changes broaden platform support, improve boot reliability, and reduce field failures. Demonstrates expertise in U-Boot SPL, UFS, Rockchip RK3576, GPIOs, and device-tree configuration, with direct business value in faster boot paths and easier bring-up on new boards.
December 2025
8 Commits • 2 Features
Dec 1, 2025December 2025: Delivered cross-board UFS boot support and reliability improvements for flipperdevices/u-boot. Implemented SPL boot from UFS for RK3576 and NanoPi M5, added RK3576 UFS GPIO reset support, enabled NanoPi M5 UFS in the device tree, and fixed EVB1 boot issues caused by upstream DTS changes. These changes broaden platform support, improve boot reliability, and reduce field failures. Demonstrates expertise in U-Boot SPL, UFS, Rockchip RK3576, GPIOs, and device-tree configuration, with direct business value in faster boot paths and easier bring-up on new boards.
November 2025
7 Commits • 2 Features
Nov 1, 2025November 2025: Delivered significant storage and boot-path improvements for flipperdevices/u-boot on RK3576 and NanoPi M5, with UFS-based storage and power management, plus SPL boot from SPI flash. These changes improve boot reliability, performance, and energy efficiency while aligning with roadmap to support modern storage paths and streamlined boot sequences.
7 Commits • 2 Features
Nov 1, 2025November 2025: Delivered significant storage and boot-path improvements for flipperdevices/u-boot on RK3576 and NanoPi M5, with UFS-based storage and power management, plus SPL boot from SPI flash. These changes improve boot reliability, performance, and energy efficiency while aligning with roadmap to support modern storage paths and streamlined boot sequences.
November 2025
October 2025
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on concise, business-value driven achievements in hardware BSP work. Delivered RK3576 EVB1 Board Support for U-Boot in flipperdevices/u-boot, enabling upstream-friendly builds and broader platform coverage.
October 2025
1 Commits • 1 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on concise, business-value driven achievements in hardware BSP work. Delivered RK3576 EVB1 Board Support for U-Boot in flipperdevices/u-boot, enabling upstream-friendly builds and broader platform coverage.
Activity
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Quality Metrics
Correctness95.6%
Maintainability84.6%
Architecture86.8%
Performance85.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CDTS
Technical Skills
Board Support Package (BSP) DevelopmentC programmingDevice TreeEmbedded Systems DevelopmentLinux Kernel ConfigurationLinux kernel developmentbootloader developmentconfiguration managementdevice driver developmentdevice treedevice tree configurationdevice tree managementdriver developmentembedded systemsfirmware development
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