Samsung Exynos SROM and DMC memory controllers
Memory-side controllers found inside Samsung's Exynos mobile and single-board-computer SoCs: the SROM controller that handles external static memory and peripherals on the Exynos 4210 (2011), and the dynamic memory controller on the Exynos 5422 (2014) which powered popular boards like Hardkernel's ODROID-XU4.
recommendation
Worth keeping but flagging as legacy because the underlying SoCs date to 2011 and 2014 and the most visible consumer board using them, the ODROID-XU4, has been discontinued along with the Exynos 5422 chip itself. However, the code is still actively maintained: a real bug fix was backported to stable as recently as October 2025 and the DMC driver received cleanup work in 2024, so there is no case for removal yet.
repository signals
sources
- lore.kernel.org
The exynos-srom driver still received a real bug-fix backported to stable in October 2025, indicating ongoing maintenance rather than abandonment.
- lore.kernel.org
The exynos5422-dmc driver was still being updated upstream in 2024, showing current tree attention.
- hardkernel.com
ODROID-XU4, a prominent Exynos5422 board, is listed as discontinued and out of stock.
- hardkernel.com
Hardkernel states the Exynos-5422 CPU and LPDDR3 parts were discontinued and the XU4 can no longer be produced.
- en.wikichip.org
Exynos 4210 was launched in 2011, confirming the SROM side of this driver family targets very old SoCs.
- en.wikichip.org
Exynos 5422 launched in 2014, confirming the DMC side also targets an older SoC generation.
codex reasoning notes (technical)
Local file inspection via shell showed this directory contains Samsung Exynos MC drivers (`exynos-srom.c`, `exynos5422-dmc.c`). Lore evidence came from `lore_file_timeline`; it shows stable/backport and cleanup traffic, with no confirmed removal thread found, so removal is not justified. Deployment evidence came from `web.search_query` results on Hardkernel product pages showing ODROID XU4/XU4Q discontinuation and Exynos-5422 component discontinuation. WikiChip URLs were obtained via `web.search_query` to date the underlying SoCs (2011/2014). Conclusion: legacy hardware with low current deployments, but still maintained enough to keep and annotate rather than deprecate/remove.