Re: [PATCH v2 3/3] memory: renesas-rpc-if: Add support for RZ/T2H SoC

[Krzysztof Kozlowski <krzk@kernel.org>]

On 27/03/2026 18:42, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> Add support for the xSPI controller found on the Renesas RZ/T2H
> (R9A09G077) SoC.
> 
> The xSPI IP on RZ/T2H is closely related to the RZ/G3E variant, with
> minor differences in some configuration register bits. As these
> differences are not currently exercised by the driver, reuse the
> existing implementation and regmap configuration.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
> v1->v2:
> - Added xspi_info_r9a09g077 for RZ/T2H with type XSPI_RZ_T2H instead
>   of reusing xspi_info_r9a09g047 with type XSPI_RZ_G3E, to allow for
>   better differentiation in the future if needed.

I see you tried to improve the description, but I have the same
concerns. You added now bunch of dead code to mimic lack of
compatibility, but it does not change the fact the code is 100%
compatible in the meaning of DT.

Let me repeat the question from v1:

"Eventually provide extensive arguments in terms of how DT understands
compatibility."

And if you answer like Geert did last time: "differences are not handled
yet" or "new features are not yet implemented" then you will get the
same answer.

Best regards,
Krzysztof