RE: [PATCH v2 6/8] arm64: dts: renesas: r9a09g057: Add WDT0-WDT3 nodes

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> -----Original Message-----
> From: Biju Das
> Sent: Monday, August 12, 2024 1:40 PM
> To: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
> Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>; Magnus Damm <magnus.damm@xxxxxxxxx>; Rob Herring
> <robh@xxxxxxxxxx>; Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>;
> linux-renesas-soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Fabrizio
> Castro <fabrizio.castro.jz@xxxxxxxxxxx>; Prabhakar Mahadev Lad <prabhakar.mahadev-
> lad.rj@xxxxxxxxxxxxxx>
> Subject: RE: [PATCH v2 6/8] arm64: dts: renesas: r9a09g057: Add WDT0-WDT3 nodes
> 
> 
> 
> > -----Original Message-----
> > From: Lad, Prabhakar <prabhakar.csengg@xxxxxxxxx>
> > Sent: Monday, August 12, 2024 1:32 PM
> > To: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>; Magnus Damm
> > <magnus.damm@xxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof
> > Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>;
> > linux-renesas-soc@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
> > linux-kernel@xxxxxxxxxxxxxxx; Fabrizio Castro
> > <fabrizio.castro.jz@xxxxxxxxxxx>; Prabhakar Mahadev Lad
> > <prabhakar.mahadev- lad.rj@xxxxxxxxxxxxxx>
> > Subject: Re: [PATCH v2 6/8] arm64: dts: renesas: r9a09g057: Add
> > WDT0-WDT3 nodes
> >
> > Hi Biju,
> >
> > On Mon, Aug 12, 2024 at 1:25 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> > >
> > > Hi Prabhakar,
> > >
> > > > -----Original Message-----
> > > > From: Prabhakar <prabhakar.csengg@xxxxxxxxx>
> > > > Sent: Sunday, August 11, 2024 9:50 PM
> > > > Subject: [PATCH v2 6/8] arm64: dts: renesas: r9a09g057: Add
> > > > WDT0-WDT3 nodes
> > > >
> > > > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> > > >
> > > > Add WDT0-WDT3 nodes to RZ/V2H(P) ("R9A09G057") SoC DTSI.
> > > >
> > > > Signed-off-by: Lad Prabhakar
> > > > <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> > > > ---
> > > > v1->v2
> > > > - New patch
> > > > ---
> > > >  arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 44
> > > > ++++++++++++++++++++++
> > > >  1 file changed, 44 insertions(+)
> > > >
> > > > diff --git a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
> > > > b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
> > > > index 435b1f4e7d38..7f4e8ad9b0a5 100644
> > > > --- a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
> > > > +++ b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
> > > > @@ -184,6 +184,17 @@ scif: serial@11c01400 {
> > > >                       status = "disabled";
> > > >               };
> > > >
> > > > +             wdt0: watchdog@11c00400 {
> > > > +                     compatible = "renesas,r9a09g057-wdt";
> > > > +                     reg = <0 0x11c00400 0 0x400>;
> > > > +                     clocks = <&cpg CPG_MOD 75>,
> > > > +                              <&cpg CPG_MOD 76>;
> > > > +                     clock-names = "pclk", "oscclk";
> > > > +                     resets = <&cpg 117>;
> > > > +                     power-domains = <&cpg>;
> > > > +                     status = "disabled";
> > > > +             };
> > > > +
> > > >               ostm4: timer@12c00000 {
> > > >                       compatible = "renesas,r9a09g057-ostm", "renesas,ostm";
> > > >                       reg = <0x0 0x12c00000 0x0 0x1000>; @@ -224,6
> > > > +235,28 @@ ostm7: timer@12c03000 {
> > > >                       status = "disabled";
> > > >               };
> > > >
> > > > +             wdt2: watchdog@13000000 {
> > > > +                     compatible = "renesas,r9a09g057-wdt";
> > > > +                     reg = <0 0x13000000 0 0x400>;
> > > > +                     clocks = <&cpg CPG_MOD 79>,
> > > > +                              <&cpg CPG_MOD 80>;
> > > > +                     clock-names = "pclk", "oscclk";
> > > > +                     resets = <&cpg 119>;
> > > > +                     power-domains = <&cpg>;
> > > > +                     status = "disabled";
> > > > +             };
> > >
> > > I guess same group(all wdt together) arranged together?? Not sure.
> > >
> > I think Geert prefers it to be sorted based on unit address. So I'll
> > let Geert make a decision on this (and the rest of the similar patches
> > where nodes are sorted based on unit address and not grouped based on IP).
> 
> I agree. If that is the case we need to fix [1] [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
> next.git/tree/arch/arm64/boot/dts/renesas/r8a774a1.dtsi?h=next-20240812#n584
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
> next.git/tree/arch/arm64/boot/dts/renesas/r8a77960.dtsi?h=next-20240812#n633

Similarly 

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/arch/arm64/boot/dts/renesas/r8a77960.dtsi?h=next-20240812#n762

Cheers,
Biju




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