[PATCH v5 2/2] arm64: dts: freescale: add NXP FRDM-IMX91S board support

[Frank Li]

On Wed, Feb 11, 2026 at 09:54:52AM +0800, Joseph Guo wrote:
> On 2/10/2026 11:51 PM, Frank Li wrote:
> > On Tue, Feb 10, 2026 at 07:47:55PM +0900, Yanan Yang wrote:
> >> Add DeviceTree support for the NXP FRDM-IMX91S development board based
> >> on the i.MX91 SoC. FRDM-IMX91S is a cost-optimized variant of FRDM-IMX91
> >> and differs in memory, storage, Ethernet, and PMIC configuration:
> >>
> >> - 512MB LPDDR4 (FRDM-IMX91 uses 1GB)
> >> - 256MB FlexSPI-NAND (FRDM-IMX91 uses 8GB eMMC)
> >> - Single GbE port (FRDM-IMX91 has dual GbE)
> >> - PMIC PF9453 (FRDM-IMX91 uses PCA9451A)
> >
> > Look like it is very similar with imx91-11x11-frdm boards.
> >
> > Can you create common dtsi for both boards
> >
> > imx91-11x11-fdrm-common.dtsi
> >
> > then imx91-11x11-fdrm-s.dts and imx91-11x11-frdm.dts included
> > imx91-11x11-fdrm-common.dtsi.
> >
> > You can refer below method
> > https://lore.kernel.org/imx/20260204083551.2867263-1-sherry.sun@nxp.com/
> >
> > Frank
>
> Hi Frank,
>
> I think the two boards are totally different.
> They have different PMIC, no EMMC for FRDM-IMX91S and totally different pin assignment.
> So if we create a common dtsi, there will be not much duplicate code can put in.

Okay. It will be good if diff imx91-11x11-fdrm-s.dts and imx91-11x11-frdm.dts
to show what's percentage change.

Frank
>
> Regards,
> Joseph