Re: [PATCH v4 5/7] watchdog: rzv2h: Add syscon support for WDTDCR

[Geert Uytterhoeven]

On Mon, 17 Aug 2026 at 21:26, Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> On RZ/T2H and RZ/N2H SoCs, the WDTDCR (WDT Debug Control Register) resides
> in the second register region of the CPG/MSSR block. Since this
> multi-function block is shared with other peripherals, it is exposed via a
> syscon regmap interface.
>
> Look up the SYSC regmap using the optional "renesas,sysc" property and
> derive the WDTDCR offset from the watchdog instance index.
>
> Retain the existing MMIO-based access method when the "renesas,sysc"
> property is absent to preserve compatibility with existing DT's.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds