From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
To: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Magnus Damm <magnus.damm@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
"linux-renesas-soc@vger.kernel.org"
<linux-renesas-soc@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: Re: [PATCH] arm64: dts: renesas: rzg2ul-smarc-som: Drop enabling wdt2
Date: Mon, 19 Sep 2022 11:44:05 +0100 [thread overview]
Message-ID: <CA+V-a8utMR5GRnNGYhn_hhRnDpxtBLjEhqBXmoNZXmiBObojmw@mail.gmail.com> (raw)
In-Reply-To: <OS0PR01MB59221867F12797CCA685F954864D9@OS0PR01MB5922.jpnprd01.prod.outlook.com>
On Mon, Sep 19, 2022 at 11:15 AM Biju Das <biju.das.jz@bp.renesas.com> wrote:
>
> Hi Geert,
>
> Prabhakar Mahadev Lad <prabhakar.mahadev-
> > lad.rj@bp.renesas.com>
> > Subject: Re: [PATCH] arm64: dts: renesas: rzg2ul-smarc-som: Drop
> > enabling wdt2
> >
> > Hi Biju,
> >
> > On Mon, Sep 19, 2022 at 12:06 PM Biju Das <biju.das.jz@bp.renesas.com>
> > wrote:
> > > > On Sun, Sep 18, 2022 at 10:04 AM Geert Uytterhoeven <geert@linux-
> > > > m68k.org> wrote:
> > > > > On Wed, Sep 14, 2022 at 3:43 PM Prabhakar
> > > > <prabhakar.csengg@gmail.com> wrote:
> > > > > > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> > > > > >
> > > > > > WDT CH2 is specifically to check the operation of Cortex-M33
> > CPU
> > > > so
> > > > > > don't enable WDT2 by default.
> > > > > >
> > > > For consistency I'll drop enabling WDT2 from the RZ/G2L{C} too.
> > >
> > > Does remove unused clocks turn off WDT2 clock during late init??
> > >
> > > If that is the case, we should remove entries from clock table as
> > well?
> >
> > Or add it to *_crit_mod_clks[]?
> >
> > Note that drivers/clk/renesas/r9a07g043-cpg.c creates wdt2 clocks and
> > resets, so that should probably be moved inside the #ifdef
> > CONFIG_ARM64 section.
>
Yes we dont want it to be listed on RZ/Five.
> Yes, both will do, I guess otherwise WDT enabled by Cortex-M33 will be disabled by
> CORTEX-A55 during boot.
>
Agreed.
Cheers,
Prabhakar
next prev parent reply other threads:[~2022-09-19 10:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-14 13:42 [PATCH] arm64: dts: renesas: rzg2ul-smarc-som: Drop enabling wdt2 Prabhakar
2022-09-18 9:04 ` Geert Uytterhoeven
2022-09-19 9:47 ` Lad, Prabhakar
2022-09-19 10:06 ` Biju Das
2022-09-19 10:10 ` Geert Uytterhoeven
2022-09-19 10:15 ` Biju Das
2022-09-19 10:44 ` Lad, Prabhakar [this message]
2022-09-19 10:55 ` Biju Das
2022-09-19 11:04 ` Lad, Prabhakar
2022-09-19 11:10 ` Biju Das
2022-09-19 11:37 ` Geert Uytterhoeven
2022-09-19 11:43 ` Biju Das
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