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

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Message-ID: <2025110610410184fb6c28@mail.local>
Date: Thu, 6 Nov 2025 11:41:01 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Ovidiu Panait <ovidiu.panait.rb@...esas.com>
Cc: geert <geert@...ux-m68k.org>,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
	"robh@...nel.org" <robh@...nel.org>,
	"krzk+dt@...nel.org" <krzk+dt@...nel.org>,
	"conor+dt@...nel.org" <conor+dt@...nel.org>,
	"magnus.damm" <magnus.damm@...il.com>,
	"mturquette@...libre.com" <mturquette@...libre.com>,
	"sboyd@...nel.org" <sboyd@...nel.org>,
	"p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
	"linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v2 2/6] dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H
 support

On 06/11/2025 09:13:53+0000, Ovidiu Panait wrote:
> Hi Geert,
> 
> > -----Original Message-----
> > From: Geert Uytterhoeven <geert@...ux-m68k.org>
> > Sent: Thursday, November 6, 2025 10:47 AM
> > To: Ovidiu Panait <ovidiu.panait.rb@...esas.com>
> > Cc: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>;
> > alexandre.belloni@...tlin.com; robh@...nel.org; krzk+dt@...nel.org;
> > conor+dt@...nel.org; magnus.damm <magnus.damm@...il.com>;
> > mturquette@...libre.com; sboyd@...nel.org; p.zabel@...gutronix.de; linux-
> > rtc@...r.kernel.org; linux-renesas-soc@...r.kernel.org;
> > devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; linux-
> > clk@...r.kernel.org
> > Subject: Re: [PATCH v2 2/6] dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H
> > support
> > 
> > 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@...esas.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@...esas.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.
> > 
> 
> Thanks for your review!
> 
> Please see the latest v3 series:
> https://lore.kernel.org/all/20251103121848.6539-1-ovidiu.panait.rb@renesas.com/
> 
> The first two patches were applied by Alexandre in the meantime.
> 
> Alexandre, would it be possible to drop the patches from your queue and I
> will send v4 to address the latest feedback from Geert and Conor? 
> 

Sure, I'll drop them later today.

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com