STMicroelectronics STM32 LTDC, DSI and LVDS display controllers
The display pipeline built into STMicroelectronics' STM32 microcontrollers and STM32MP1/MP2 application processors, covering the LCD-TFT (LTDC) controller plus the optional MIPI DSI and LVDS output blocks. It is what drives the screens on industrial HMIs, medical devices, point-of-sale terminals and similar embedded products built around STM32 silicon.
recommendation
It should stay because it drives the on-chip display controllers found in STMicroelectronics' STM32MP1 and STM32MP2 microprocessors, both of which ST still sells and markets in volume in 2025 for industrial and embedded panels. Upstream activity on the core ltdc.c file has been steady through 2021-2025 with patches still landing, so the driver is actively maintained and has no alternative replacement.
repository signals
sources
- git.kernel.org
Kconfig describes this as DRM support for STMicroelectronics SoC series / STM32 MCUs, with optional STM-specific DSI and LVDS support.
- lore.kernel.org
The core file drivers/gpu/drm/stm/ltdc.c was still being touched in upstream mail traffic in 2026, indicating the driver is active rather than abandoned.
- st.com
STM32MP157A is marked Active and includes LCD-TFT and MIPI DSI display capabilities, showing supported STM32MP1 hardware using this display stack remains commercially available.
- st.com
STM32MP257F is marked Active / in volume production and advertises LVDS and MIPI DSI display interfaces, showing new STM32MP2 deployments still map to this driver family.
codex reasoning notes (technical)
Family identification came from local Kconfig/source inspection via exec_command; kernel.org tree URL added by canonical recall for a stable citation. Upstream activity evidence came from lore_file_timeline on drivers/gpu/drm/stm/ltdc.c, which showed touches through 2026-04-02 and steady 2021-2025 churn. A limited lore removal probe timed out, so absence of removal discussion is an inference from the active timeline rather than a definitive negative search. ST product pages were obtained via web search and show both STM32MP1 and STM32MP2 display-capable parts still active/new, so this looks like an actively deployed industrial/embedded display driver with no natural replacement other than itself.