Re: [PATCH v2 17/19] ARM: mark Cortex-M3/M4/M7 based boards as deprecated

On Wed, Jul 01, 2026 at 11:23:51PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <[email protected]>
>
> The Cortex-M3/M4/M7 cores were designed as a replacement for the earlier
> ARM7TDMI and ARM9TDMI microarchitectures used in older microcontrollers.
>
> At the moment, Linux can run these cores either when they are integrated
> into a larger SoC, or as standalone microcontrollers. While there was
> a lot of development work going into Cortex-M support from 2011 to 2016,
> this largely stopped when it became clear that Zephyr and other RTOS
> had taken over that market. To date, the only Cortex-M based based
> microcontroller boards supported upstream are reference implementations.
>
> Schedule these for removal after the next LTS kernel, so if any users
> remain that want to update their kernels, they can stay on that
> version for a few years before having to maintain the platform support
> out of tree.
>
> Signed-off-by: Arnd Bergmann <[email protected]>
> ---
>  arch/arm/Kconfig            |  8 ++++++--
>  arch/arm/mach-at91/Kconfig  |  4 +++-
>  arch/arm/mach-imx/Kconfig   |  4 +++-

for imx part.

Acked-by: Frank Li <[email protected]>