Andrew Fong developed and maintained embedded firmware and platform features for the tenstorrent/tt-zephyr-platforms repository, focusing on power management, hardware configuration, and cross-board reliability. He unified regulator initialization, optimized memory allocation, and enhanced telemetry and firmware update processes using C, Python scripting, and YAML-based configuration management. His work included implementing board-specific power and thermal controls, refining interrupt handling, and improving test automation to ensure robust deployment across multiple hardware families. By centralizing configuration and standardizing code formatting, Andrew improved maintainability and reduced integration risk, demonstrating a deep understanding of embedded systems, low-level programming, and scalable release management practices.
2025-10 monthly summary for tenstorrent/tt-zephyr-platforms: Delivered 5 targeted changes spanning documentation, firmware tuning, and wormhole firmware. Key outcomes include enhanced onboarding and release notes with Wormhole details (CMFW/ERISC) and Zephyr date updates; AICLK PPM support enabled in Galaxy platform firmware with a 170W TDP limit and 400A fast TDC; more conservative TDP budgeting across P300 configurations to align with board power targets; restored SERDES VR register programming to fix a regression and ensure proper voltage regulation; wormhole firmware blob updates with retraining support for failed ethernet training ports and a version bump to 19.0.0. These changes improve developer productivity, system reliability, and hardware recoverability, while strengthening power governance and firmware consistency across platforms.
2025-10 monthly summary for tenstorrent/tt-zephyr-platforms: Delivered 5 targeted changes spanning documentation, firmware tuning, and wormhole firmware. Key outcomes include enhanced onboarding and release notes with Wormhole details (CMFW/ERISC) and Zephyr date updates; AICLK PPM support enabled in Galaxy platform firmware with a 170W TDP limit and 400A fast TDC; more conservative TDP budgeting across P300 configurations to align with board power targets; restored SERDES VR register programming to fix a regression and ensure proper voltage regulation; wormhole firmware blob updates with retraining support for failed ethernet training ports and a version bump to 19.0.0. These changes improve developer productivity, system reliability, and hardware recoverability, while strengthening power governance and firmware consistency across platforms.
September 2025: Delivered two platform-level enhancements for the tt-zephyr-platforms repo focusing on power management and memory efficiency for the P300X family. Implemented AICLK PPM feature with updated firmware tables across P300A_L/R, P300B_L/R, and P300C_L/R, enabling tighter power/performance control. Optimized BH_ARC scratchpad memory footprint by changing Kconfig data type, reducing size from 1298 bytes to 512 bytes and freeing memory for BH_ARC workloads. These changes improve energy efficiency, platform readiness, and memory availability for future BH_ARC workloads across the P300 series. No major bugs fixed this month based on reported items.
September 2025: Delivered two platform-level enhancements for the tt-zephyr-platforms repo focusing on power management and memory efficiency for the P300X family. Implemented AICLK PPM feature with updated firmware tables across P300A_L/R, P300B_L/R, and P300C_L/R, enabling tighter power/performance control. Optimized BH_ARC scratchpad memory footprint by changing Kconfig data type, reducing size from 1298 bytes to 512 bytes and freeing memory for BH_ARC workloads. These changes improve energy efficiency, platform readiness, and memory availability for future BH_ARC workloads across the P300 series. No major bugs fixed this month based on reported items.
July 2025 monthly summary for tenstorrent/tt-zephyr-platforms: Focused cross-board regulator unification and memory tuning to improve reliability, maintainability, and performance. Delivered standardized regulator initialization across P1x0, P300, and Galaxy UB, added SerDes power-rail support for P150, renamed vcore settings, and introduced VCORE/VCOREM regulator data structures with formatting cleanup for consistency. Updated Wormhole firmware to CMFW 2.35.0.0 with telemetry fixes and ASIC ID entries, and tuned Galaxy memory configuration to 14G with corresponding module configuration and release notes updates. These changes reduce cross-board maintenance burden, enhance telemetry and hardware identification, and provide measurable performance improvements. Tech stack demonstrated includes C/C++ regulator modeling, clang-format hygiene, firmware blob handling, memory init parameter management, and release-note documentation.
July 2025 monthly summary for tenstorrent/tt-zephyr-platforms: Focused cross-board regulator unification and memory tuning to improve reliability, maintainability, and performance. Delivered standardized regulator initialization across P1x0, P300, and Galaxy UB, added SerDes power-rail support for P150, renamed vcore settings, and introduced VCORE/VCOREM regulator data structures with formatting cleanup for consistency. Updated Wormhole firmware to CMFW 2.35.0.0 with telemetry fixes and ASIC ID entries, and tuned Galaxy memory configuration to 14G with corresponding module configuration and release notes updates. These changes reduce cross-board maintenance burden, enhance telemetry and hardware identification, and provide measurable performance improvements. Tech stack demonstrated includes C/C++ regulator modeling, clang-format hygiene, firmware blob handling, memory init parameter management, and release-note documentation.
June 2025 monthly summary: Delivered key platform improvements across two repositories with a focus on reliability, maintainability, and scalability. Key features include the Wormhole Firmware Update and Regulator Configuration Refactor in tt-zephyr-platforms, which consolidated firmware improvements (telemetry stability fixes, firmware blob updates, multi-mesh support) and centralized regulator configuration to improve maintainability and reliability. In addition, Multi-Instance Support for the DesignWare Interrupt Controller in nrfconnect/sdk-zephyr was implemented, enabling multiple interrupt aggregators and configurable starting vectors to improve flexibility and compatibility. These efforts were complemented by internal refactors to centralize regulator settings and enhance interrupt initialization logic, reducing configuration risk and improving platform readiness for broader deployments.
June 2025 monthly summary: Delivered key platform improvements across two repositories with a focus on reliability, maintainability, and scalability. Key features include the Wormhole Firmware Update and Regulator Configuration Refactor in tt-zephyr-platforms, which consolidated firmware improvements (telemetry stability fixes, firmware blob updates, multi-mesh support) and centralized regulator configuration to improve maintainability and reliability. In addition, Multi-Instance Support for the DesignWare Interrupt Controller in nrfconnect/sdk-zephyr was implemented, enabling multiple interrupt aggregators and configurable starting vectors to improve flexibility and compatibility. These efforts were complemented by internal refactors to centralize regulator settings and enhance interrupt initialization logic, reducing configuration risk and improving platform readiness for broader deployments.
May 2025 performance summary for tenstorrent/tt-zephyr-platforms focusing on power management, reliability, and firmware/upstream readiness. Delivered configurable board power limit via FWTable integration with throttler logging, enabling precise governance and better observability. Fixed power limit detection to rely on PSU_SENSE pins (no BOARD_ID_0), aligning with FWTable product limits. Updated telemetry release notes to reflect input power usage, clarifying guidance for TAG_INPUT_CURRENT vs TAG_INPUT_POWER. Upgraded Wormhole firmware to 18.4.0 with SPI bootrom and CMFW improvements, including a migration note requiring tt-kmd v1.33+. Added Tensix reset control message and an end-to-end test validating the Tensix reset sequence to prevent NOC hangs. These work items collectively strengthen power governance, observability, upgradeability, and runtime reliability for the platform.
May 2025 performance summary for tenstorrent/tt-zephyr-platforms focusing on power management, reliability, and firmware/upstream readiness. Delivered configurable board power limit via FWTable integration with throttler logging, enabling precise governance and better observability. Fixed power limit detection to rely on PSU_SENSE pins (no BOARD_ID_0), aligning with FWTable product limits. Updated telemetry release notes to reflect input power usage, clarifying guidance for TAG_INPUT_CURRENT vs TAG_INPUT_POWER. Upgraded Wormhole firmware to 18.4.0 with SPI bootrom and CMFW improvements, including a migration note requiring tt-kmd v1.33+. Added Tensix reset control message and an end-to-end test validating the Tensix reset sequence to prevent NOC hangs. These work items collectively strengthen power governance, observability, upgradeability, and runtime reliability for the platform.
April 2025 — tenstorrent/tt-zephyr-platforms Key features delivered and release readiness aligned with P100 hardware support, enhanced telemetry visibility, and RC-driven release prep. No explicit major bug fixes logged this month; work focused on stability, compatibility, testing, and process improvements.
April 2025 — tenstorrent/tt-zephyr-platforms Key features delivered and release readiness aligned with P100 hardware support, enhanced telemetry visibility, and RC-driven release prep. No explicit major bug fixes logged this month; work focused on stability, compatibility, testing, and process improvements.
Concise monthly summary for 2025-03 focusing on delivering foundational reliability, safety, and performance improvements for tenstorrent/tt-zephyr-platforms. Emphasizes business value through stability, safer DVFS/regulator behavior, test infrastructure improvements, and clearer code/harmonized configurations across boards.
Concise monthly summary for 2025-03 focusing on delivering foundational reliability, safety, and performance improvements for tenstorrent/tt-zephyr-platforms. Emphasizes business value through stability, safer DVFS/regulator behavior, test infrastructure improvements, and clearer code/harmonized configurations across boards.
Overview of all repositories you've contributed to across your timeline