January 2026 monthly summary for zephyrproject-rtos/zephyr. Focus this month was on device-tree configurability for the NPU cache. Delivered a dedicated NPU cache DTS node to enable status-driven control via overlays, with default state set to enabled and operational state following the NPU node status. No major bugs fixed this period; primary emphasis was feature delivery and aligning hardware readiness with software configuration for future production use. Impact includes potential power and resource savings by allowing the cache to be disabled when the NPU is not ready, improved testability through explicit device-tree configuration, and smoother integration with overlay-based workflows. Demonstrated competencies in device-tree design, overlay-based configuration, and kernel-level hardware enablement.