Re: [PATCH 08/13] ARM: imx: remove nommu support

[Giulio Benetti]

Hi Fabio, Arnd and Jesse,

On 9/9/26 10:21 PM, Fabio Estevam wrote:
> On Tue, Sep 8, 2026 at 12:29 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
> > From: Arnd Bergmann <arnd@xxxxxxxx>
> >
> > The i.MX platform has grown support for three separate product
> > lines using Cortex-M based microcontrollers over the years:
> >
> >   - i.MX RT1050, a high-end microcontroller
> >   - Vybrid vf610 suppors running Linux on either the Cortex-A5
> >     CPU or the Cortex-M4 MCU
> >   - i.MX7D similarly can run Linux on the Cortex-A7 or the
> >     Cortex-M4
> >
> > There are no known upstream users of any of those three, so
> > drop support and simplify the platform to assume that an MMU
> > is present.
> >
> > Cc: Frank Li <Frank.Li@xxxxxxx>
> > Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> > Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
> > Cc: Fabio Estevam <festevam@xxxxxxxxx>
> > Cc: Stefan Agner <stefan@xxxxxxxx>
> > Cc: Rob Herring <robh@xxxxxxxxxx>
> > Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
> > Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
> > Cc: Vladimir Zapolskiy <vz@xxxxxxxxx>
> > Cc: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>
> > Cc: devicetree@xxxxxxxxxxxxxxx
> > Cc: imx@xxxxxxxxxxxxxxx
> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> > ---
> >   arch/arm/boot/dts/nxp/imx/Makefile            |    2 -
> >   arch/arm/boot/dts/nxp/imx/imxrt1050-evk.dts   |   72 -
> >   arch/arm/boot/dts/nxp/imx/imxrt1050-pinfunc.h |  993 -----------
> >   arch/arm/boot/dts/nxp/imx/imxrt1050.dtsi      |  160 --
> >   arch/arm/boot/dts/nxp/imx/imxrt1170-pinfunc.h | 1561 -----------------
> >   arch/arm/boot/dts/nxp/vf/Makefile             |    2 -
> >   arch/arm/boot/dts/nxp/vf/vf610m4-colibri.dts  |   61 -
> >   arch/arm/boot/dts/nxp/vf/vf610m4-cosmic.dts   |   88 -
> >   arch/arm/boot/dts/nxp/vf/vf610m4.dtsi         |   61 -
> >   arch/arm/configs/imxrt_defconfig              |   35 -
> >   arch/arm/configs/vf610m4_defconfig            |   39 -
> >   arch/arm/mach-imx/Kconfig                     |   27 +-
> >   arch/arm/mach-imx/Makefile                    |    3 -
> >   arch/arm/mach-imx/mach-imx7d-cm4.c            |   18 -
> >   arch/arm/mach-imx/mach-imxrt.c                |   19 -
>
> The imxrt1050-evk dts is used in U-Boot.
>
> Adding Jesse and Giulio, who use this platform in U-Boot.

MMU-less architecture never had a complete support, I agree that it's
time to drop it so:
Acked-by: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>

Best regards
Giulio Benetti