Re: [PATCH 1/3] dt-bindings: memory: renesas,rzg3e-xspi: Add RZ/T2H and RZ/N2H support

[Rob Herring (Arm)]

On Tue, 10 Mar 2026 21:29:25 +0000, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> 
> Add device tree binding support for the xSPI Interface on Renesas
> RZ/T2H and RZ/N2H SoCs. The xSPI IP on these SoCs is closely related
> to that found on the RZ/G3E SoC with some register bit differences
> in the configuration registers.
> 
> The RZ/T2H variant has a reduced clock configuration, requiring only
> the AHB and SPI clocks (without the AXI and spix2 clocks). It also
> requires only the hardware reset (hresetn), without the AXI reset
> (aresetn).
> 
> The RZ/N2H variant is compatible with RZ/T2H and uses the same clock
> and reset configuration.
> 
> Update the binding schema to accommodate these differences using
> conditional constraints based on the compatible string, while
> maintaining backward compatibility with existing RZ/G3E and RZ/V2H(P)
> implementations.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> ---
>  .../renesas,rzg3e-xspi.yaml                   | 60 +++++++++++++++----
>  1 file changed, 49 insertions(+), 11 deletions(-)
> 

Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>