Re: [PATCH v2 2/6] dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H support

Geert Uytterhoeven
2025-11-06T08:47:41Z

Hi Ovidiu,

Sorry, I still had outstanding review comments I hadn't sent yet, as
I hadn't finished my review yet.

On Tue, 21 Oct 2025 at 10:07, Ovidiu Panait
<ovidiu.panait.rb@renesas.com> wrote:
> The Renesas RZ/V2H RTC IP is based on the same RTCA3 IP as RZ/G3S
> (r9a08g045), with the following differences:
> - It lacks the time capture functionality
> - The maximum supported periodic interrupt frequency is 128Hz instead
> of 256Hz
> - It requires two reset lines instead of one
>
> Add new compatible string "renesas,r9a09g057-rtca3" for RZ/V2H and update
> the binding accordingly:
> - Allow "resets" to contain one or two entries depending on the SoC.
> - Add "reset-names" property, but make it required only for RZ/V2H.
>
> Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@renesas.com>
> ---
> v2 changes:
> - Added "reset-names" property and made it required for RZ/V2H.

Thanks for the update!

> --- a/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml
> +++ b/Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml

> @@ -61,6 +63,39 @@ required:
> - power-domains
> - resets
>
> +allOf:
> + - $ref: rtc.yaml#
> +
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: renesas,r9a08g045-rtca3
> + then:
> + properties:
> + resets:
> + items:
> + - description: VBATTB module reset
> + reset-names:
> + const: vbattb

Please add this property to the example at the bottom, too.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

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