linux-kernel - Re: [PATCH v3] arm64: dts: mt8173-oak: Switch to SMC watchdog

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Message-ID: <CAEXTbpdpOE=9U2ZNPBZDqBVS3AU9-cO6G9kjBy3tuVAbGrDNQA@mail.gmail.com>
Date:   Fri, 29 Jul 2022 11:00:19 +0800
From:   Pin-yen Lin <treapking@...omium.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Eizan Miyamoto <eizan@...omium.org>,
        Evan Benn <evanbenn@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH v3] arm64: dts: mt8173-oak: Switch to SMC watchdog

On Fri, Jul 29, 2022 at 1:54 AM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 28/07/2022 17:39, Pin-yen Lin wrote:
> > Switch to SMC watchdog because we need direct control of HW watchdog
> > registers from kernel. The corresponding firmware was uploaded in
> > https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3405.
> >
> > Signed-off-by: Pin-yen Lin <treapking@...omium.org>
> > ---
> >
> > Changes in v3:
> > - Remove /delete-node/ and create a new node for SMC watchdog.
> >
> > Changes in v2:
> > - Move the modifications to mt8173-elm.dtsi and add some comments.
> >
> >  arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 13 +++++++++++++
> >  1 file changed, 13 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
> > index e21feb85d822..fc8203297bac 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
> > @@ -161,6 +161,19 @@ hdmi_connector_in: endpoint {
> >                       };
> >               };
> >       };
> > +
> > +
>
> Why?
>
> > +     smc_watchdog {
>
> No, you need to read the comment you receive one more time. So to be
> clear: "watchdog"
>
Ah I see. I'll fix this in v4.
>
>
> Best regards,
> Krzysztof