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Date: Sat, 17 Feb 2024 15:01:25 +0800
From: Hsin-Te Yuan <yuanhsinte@...omium.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Matthias Brugger <matthias.bgg@...il.com>, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v3] arm64: dts: mt8195-cherry-tomato: change watchdog
 reset boot flow

Hello AngeloGioacchino,

I noticed that this patch does not seem to have been landed yet.
Please let me know if there are any issues.

Thank you,
Hsin-Te


On Wed, Jan 24, 2024 at 5:04 PM Hsin-Te Yuan <yuanhsinte@...omium.org> wrote:
>
> Hi AngeloGioacchino,
>
> This bug can be triggered by stopping watchdog daemon and running
> `sleep 60 > /dev/watchdog`.
>
> Regards,
> Hsin-Te
>
>
>
> On Wed, Jan 24, 2024 at 4:27 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@...labora.com> wrote:
> >
> > Il 24/01/24 08:51, Hsin-Te Yuan ha scritto:
> > > From: Hsin-Te Yuan <yuanhsinte@...gle.com>
> > >
> > > The external output reset signal was originally disabled and sent from
> > > firmware. However, an unfixed bug in the firmware on tomato prevents
> > > the signal from being sent, causing the device to fail to boot. To fix
> > > this, enable external output reset signal to allow the device to reboot
> > > normally.
> > >
> > > Fixes: 5eb2e303ec6b ("arm64: dts: mediatek: Introduce MT8195 Cherry platform's Tomato")
> > > Signed-off-by: Hsin-Te Yuan <yuanhsinte@...omium.org>
> >
> > Can't trigger the bug, but also this commit gives no side effects, so:
> >
> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> >
> >
> > > ---
> > > Changes in v3:
> > > - Add Fixes tag
> > >
> > > Changes in v2:
> > > - Limit the effect only on tomato.
> > > ---
> > >   arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts | 4 ++++
> > >   arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts | 4 ++++
> > >   arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts | 4 ++++
> > >   3 files changed, 12 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> > > index 2d5e8f371b6de..a82d716f10d44 100644
> > > --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> > > +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r1.dts
> > > @@ -23,3 +23,7 @@ &sound {
> > >   &ts_10 {
> > >       status = "okay";
> > >   };
> > > +
> > > +&watchdog {
> > > +     /delete-property/ mediatek,disable-extrst;
> > > +};
> > > diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> > > index 2586c32ce6e6f..2fe20e0dad836 100644
> > > --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> > > +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dts
> > > @@ -43,3 +43,7 @@ &sound {
> > >   &ts_10 {
> > >       status = "okay";
> > >   };
> > > +
> > > +&watchdog {
> > > +     /delete-property/ mediatek,disable-extrst;
> > > +};
> > > diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> > > index f54f9477b99da..dd294ca98194c 100644
> > > --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> > > +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r3.dts
> > > @@ -44,3 +44,7 @@ &sound {
> > >   &ts_10 {
> > >       status = "okay";
> > >   };
> > > +
> > > +&watchdog {
> > > +     /delete-property/ mediatek,disable-extrst;
> > > +};
> > >
> > > ---
> > > base-commit: 64b50fcb03649ca7f0d762a50e7a3484cfc1d586
> > > change-id: 20230818-send-upstream-e91e615a893c
> > >
> > > Best regards,
> >

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