[PATCH 1/2] dt-bindings: arm: fsl: Add FRDM-IMX91S board

[Yanan Yang]

On Fri, Dec 05, 2025 at 09:21:55AM +0100, Krzysztof Kozlowski wrote:
> On 05/12/2025 09:03, Yanan.Yang wrote:
> > Add DT compatible string for NXP FRDM-IMX91S board
> > 
> > The FRDM i.MX 91S development board is an low-cost and compact
> > development board featuring the i.MX 91 applications processor.
> > 
> > Signed-off-by: Yanan.Yang <yanan.yang at nxp.com>
> 
> Are you sure your Latin name contains '.' character? Or you just copied
> login?
> 
> > ---
> >  Documentation/devicetree/bindings/arm/fsl.yaml | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
> > index 68a2d5fecc43..82f28be401b8 100644
> > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > @@ -1412,6 +1412,7 @@ properties:
> >          items:
> >            - enum:
> >                - fsl,imx91-11x11-evk       # i.MX91 11x11 EVK Board
> > +              - fsl,imx91-11x11-frdm-s    # FRDM-IMX91S Board
> 
> Anyway, this was sent, or something almost the same.
> 
> Align internally before posting duplicates or at least explain why this
> is not a duplicate It is not the job of the community to coordinate how
> NXP employees should work. Srsly, it's NXP's job.
>
Hi Krzysztof,
Thank you for your review and for pointing this out.

This patch set is not a duplicate of the FRDM-IMX91 series. It introduces
support for a new board: FRDM-IMX91S. While FRDM-IMX91S is similar to
FRDM-IMX91, there are hardware differences that require a separate DTS:

- 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)

These differences were described in the cover letter and commit message,
but I can make them more explicit if needed.

Regards,
Yanan

> 
> 
> Best regards,
> Krzysztof