March 2026 highlights: delivered NXP MCUX Quadrature Decoder (QDC) support and stabilized timer behavior on NXP-based boards, enhancing motion sensing and test reliability for MCUX platforms. Implemented end-to-end QDC integration (DT bindings, sensor driver with rotation, build-time enablement, multiple peripheral nodes, and per-board overlays) and configured GPT timers in free-run mode across targeted boards to ensure deterministic testing. These efforts deliver new encoder capability for MCUX hardware, reduce integration effort, and improve automation test stability.

February 2026: Strengthened PWM subsystem reliability and test coverage for NXP MCUX platforms in nxp-upstream/zephyr. Delivered feature work to improve hardware compatibility and clarified usage docs; fixed a critical capture reliability bug; expanded board-level test configuration to enable targeted PWM validation on mimxrt1170_evk_mimxrt1176_cm4. Result: more robust PWM behavior, safer integration with hardware capabilities, and improved validation workflows for faster release readiness.

January 2026 monthly summary: Delivered cross-repo PWM improvements, bug fix, and expanded collaboration to improve maintainability and power efficiency. Key deliverables include: (1) Bug fix in PWM driver assertion message formatting to ensure proper multi-line concatenation (nrfconnect/sdk-zephyr; commit 88d4709b45790f23bd2862a4669cf1997a8c60a1). (2) Collaboration onboarding for PWM and counter drivers to improve code ownership (zephyrproject-rtos/zephyr; commits c7425884d648d329c3f6607d7c369d1dde83f626 and 50ba0244c1136b8bf11fda052e640a84d44bc691). (3) PWM driver enhancements and testing support, introducing PWM WAITEN bitfield in hal_nxp and enabling TPM-based testing on frdm_mcxw71 for center-aligned PWM (zephyrproject-rtos/zephyr; commits b72f00f84379256ea5dfc271584ba00d2e018bd9 and abbe055e52f8257d20e1b7ff680067936a253a01). (4) MCXA PWM WAITEN bitfield support added to MCXA peripheral headers to enable sleep-mode control (zephyrproject-rtos/hal_nxp; commit 683b4077c6760ece043e55bb2d7dc9d1996c7ffd).

December 2025 monthly summary for two core Zephyr projects. Delivered major PWM improvements, SCTimer input capture, expanded MCUX PWM/LED support, and robust testing overlays, driving reliability and hardware interoperability across multiple boards and SoCs.

November 2025: Delivered significant PWM subsystem enhancements and testing across MCU boards for nrfconnect/sdk-zephyr. Key features include PWM capture in the MCUX PWM driver, input filtering via new binding properties, LED blink delay fallback to support timers with limited range, and board-level updates to FRDM-MCXE247 for counter and PWM features. Added PWM loopback testing overlay for hardware validation and device-tree bindings to configure input filtering. Fixed PWM_SetupPwm assertion during high-frequency operation, improving stability across platforms. Representative commits include 5d48b0718a35945989d236e1b1b3f62d3e4ba583, 0bce58b4feb6951cc089ebf557884fe0d661fef4, 8dcd7579eb1362d08f8e7eeb81379a46a06fdbfb, bf829e647653a044079fc7b9234ef55edfe28217, c84fdef122df6e6489464afca115a3fe446abf66, f46f921b7f4f8a7ba2999e2e84354a984162b14d.

October 2025 summary for zephyrproject-rtos/zephyr: Delivered targeted PWM testing infrastructure and reliability improvements for QTMR on MCUX platforms, enabling robust validation and early defect detection in the PWM subsystem. The work focused on automated test coverage, hardware loopback validation, and safe, configurable capture across MCUX QTMR drivers with TPM support. These changes improve test velocity, cross-hardware portability, and long-term maintainability, driving higher confidence in PWM functionality on emulated and real hardware.

September 2025 achievements: Enabled critical timer and TPM capabilities across Zephyr projects, improved hardware readiness, and expanded test coverage with cross-board validation. Key engineering wins include LPIT driver enablement and bug fixes, device tree cleanup to remove warnings, and enhanced TPM functionality and tests.

August 2025 focused on delivering robust hardware timer support and broadening test coverage across Zephyr-based projects, with a strong emphasis on business value, reliability, and cross-board compatibility. Key infrastructure improvements include device-tree and clock configuration enhancements to enable precise timing on target MCUs, plus expanded test suites to catch regressions early.

July 2025 monthly summary focused on delivering NXP LPIT support in Zephyr for RT118X, expanding hardware coverage and reinforcing platform readiness. Implemented end-to-end LPIT support across the stack: a new LPIT counter driver based on MCUX SDK, device tree bindings for LPIT instances, clock configuration updates for RT118X, and enabling LPIT-based tests on the mimxrt1180_evk. These efforts improve timer reliability, streamline customer deployments on NXP i.MX RT platforms, and strengthen Zephyr’s timer subsystem.