RE: [PATCH mainline-linux 1/3] dt-bindings: watchdog: renesas,r9a09g057-wdt: Rework example

From: Fabrizio Castro

Date: Thu Jan 29 2026 - 12:44:22 EST


Hi Conor,

Thanks for your feedback.

> From: Conor Dooley <conor@xxxxxxxxxx>
> Sent: 29 January 2026 17:39
> To: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
> Cc: Rob Herring <robh@xxxxxxxxxx>; Guenter Roeck <linux@xxxxxxxxxxxx>; Michael Turquette
> <mturquette@xxxxxxxxxxxx>; Stephen Boyd <sboyd@xxxxxxxxxx>; Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>;
> Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>; Geert Uytterhoeven <geert+renesas@xxxxxxxxx>; Conor Dooley
> <conor+dt@xxxxxxxxxx>; magnus.damm <magnus.damm@xxxxxxxxx>; Prabhakar Mahadev Lad <prabhakar.mahadev-
> lad.rj@xxxxxxxxxxxxxx>; linux-watchdog@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-renesas-
> soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; wsa+renesas <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>; linux-
> clk@xxxxxxxxxxxxxxx; Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> Subject: Re: [PATCH mainline-linux 1/3] dt-bindings: watchdog: renesas,r9a09g057-wdt: Rework example
>
> On Thu, Jan 29, 2026 at 02:07:29PM +0000, Fabrizio Castro wrote:
> > When the bindings for the Renesas RZ/V2H(P) SoC were factored
> > out IP WDT0 was selected for the example, however the HW user
> > manual states that only IP WDT1 can be used by Linux.
> >
> > This commit is part of a series that removes WDT{0,2,3} support
> > from the kernel, therefore the example from the bindings has
> > lost its meaning.
> >
> > Update the example accordingly.
> >
> > Fixes: fcba2855251f ("dt-bindings: watchdog: factor out RZ/V2H(P) watchdog")
>
> Given this is an example, I don't think a fixes tag is appropriate here.

I'll take this out in v2.

Cheers,
Fab

>
> > Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@xxxxxxxxxxx>
> > ---
> > .../bindings/watchdog/renesas,r9a09g057-wdt.yaml | 8 ++++----
> > 1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
> b/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
> > index 099200c4f136..975c5aa4d747 100644
> > --- a/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
> > +++ b/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
> > @@ -89,11 +89,11 @@ examples:
> > - |
> > #include <dt-bindings/clock/renesas,r9a09g057-cpg.h>
> >
> > - watchdog@11c00400 {
> > + watchdog@14400000 {
> > compatible = "renesas,r9a09g057-wdt";
> > - reg = <0x11c00400 0x400>;
> > - clocks = <&cpg CPG_MOD 0x4b>, <&cpg CPG_MOD 0x4c>;
> > + reg = <0x14400000 0x400>;
> > + clocks = <&cpg CPG_MOD 0x4d>, <&cpg CPG_MOD 0x4e>;
> > clock-names = "pclk", "oscclk";
> > - resets = <&cpg 0x75>;
> > + resets = <&cpg 0x76>;
> > power-domains = <&cpg>;
> > };
> > --
> > 2.34.1
> >