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The Memory Technology Device (MTD) subsystem has come a long way from its early days of rudimentary flash support. As embedded systems have evolved, so too has Linux’s ability to manage and interface with raw flash memory devices — from parallel NAND and NOR to modern SPI-based variants.
While SPI NOR initially led the charge, the past few years have seen SPI NAND support in Linux grow rapidly, gaining robustness, better performance, and broader compatibility. But the story doesn't end there. Improvements across the MTD stack continue to shape how developers design with raw flash.
This talk takes a tour through the evolution of raw flash support in Linux: how we got here, what’s new, and what it means for future designs. Whether you’re maintaining legacy NAND systems or eyeing SPI NAND for your next embedded project, we’ll explore the practical impact of recent changes and what to expect next. Raw flashes might not be dead just yet — they’ve just gotten smarter.
