Explore the benefits and challenges of upstreaming legacy Linux-based platforms in this informative 36-minute talk by Neil Armstrong from BayLibre. Learn why pushing off-tree changes to mainline Linux is crucial for long-term success, despite common objections. Discover practical tips for streamlining the upstreaming process, addressing copyright issues, and navigating community aspects. Understand how early upstreaming can significantly reduce future maintenance work. Gain insights from Armstrong's extensive experience in embedded Linux engineering, including his work on ARM/ARM64 SoCs, power management, and multimedia drivers.