From: Maxime Ripard <maxime.ripard@bootlin.com>
To: "Clément Péron" <peron.clem@gmail.com>
Cc: devicetree <devicetree@vger.kernel.org>,
Samuel Holland <samuel@sholland.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Chen-Yu Tsai <wens@csie.org>, Rob Herring <robh+dt@kernel.org>,
Jagan Teki <jagan@amarulasolutions.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Icenowy Zheng <icenowy@aosc.io>
Subject: Re: [PATCH 2/2] arm64: dts: h6: Add watchdog node
Date: Mon, 8 Apr 2019 10:16:35 +0200 [thread overview]
Message-ID: <20190408081635.dlcppclakavwip6v@flea> (raw)
In-Reply-To: <CAJiuCcc5_tkmSM8sV2enG7t5=eU21ZrzcCVLUzF+c=8MiZhdFA@mail.gmail.com>
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On Sun, Apr 07, 2019 at 04:27:36PM +0200, Clément Péron wrote:
> Hi,
>
> On Fri, 5 Apr 2019 at 18:24, Clément Péron <peron.clem@gmail.com> wrote:
> >
> > Hi,
> >
> > On Fri, 5 Apr 2019 at 17:08, Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > >
> > > On Fri, Apr 05, 2019 at 10:59:35PM +0800, Chen-Yu Tsai wrote:
> > > > On Fri, Apr 5, 2019 at 10:50 PM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > > > >
> > > > > On Fri, Apr 05, 2019 at 10:35:08PM +0800, Chen-Yu Tsai wrote:
> > > > > > On Fri, Apr 5, 2019 at 5:02 PM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > > > > > >
> > > > > > > On Thu, Apr 04, 2019 at 03:57:36PM +0200, Clément Péron wrote:
> > > > > > > > Allwinner H6 has a watchog compatible with A31.
> > > > > > > >
> > > > > > > > Declare it in the device tree.
> > > > > > > >
> > > > > > > > Signed-off-by: Clément Péron <peron.clem@gmail.com>
> > > > > > >
> > > > > > > Applied both, thanks!
> > > > > > > Maxime
> > > > > >
> > > > > > IIRC there are 3 watchdogs on the H6. One is the trusted watchdog,
> > > > > > which should be reserved for underlying firmware.
> > > > > >
> > > > > > The other two are the normal and R-block watchdog. Although they
> > > > > > look the same, the "normal" one can't reset the system. :(
> > > > > > That one is actually the one ATF currently uses. So reboot doesn't
> > > > > > work on the H6.
> >
> > Some users report that the reboot on the PineH64 actually works.
> >
> > Clement
> >
> > > > >
> > > > > So that patch will not do anything then?
>
> Did some test and only interrupts are working right now. If the WDOG
> is configured to make the board reboot the system will be stuck :S
> Maybe better to disabled it for now and leave a comment.
I dropped the two patches
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard@bootlin.com>
To: "Clément Péron" <peron.clem@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>, Rob Herring <robh+dt@kernel.org>,
Icenowy Zheng <icenowy@aosc.io>,
Jagan Teki <jagan@amarulasolutions.com>,
devicetree <devicetree@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Samuel Holland <samuel@sholland.org>
Subject: Re: [PATCH 2/2] arm64: dts: h6: Add watchdog node
Date: Mon, 8 Apr 2019 10:16:35 +0200 [thread overview]
Message-ID: <20190408081635.dlcppclakavwip6v@flea> (raw)
In-Reply-To: <CAJiuCcc5_tkmSM8sV2enG7t5=eU21ZrzcCVLUzF+c=8MiZhdFA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1901 bytes --]
On Sun, Apr 07, 2019 at 04:27:36PM +0200, Clément Péron wrote:
> Hi,
>
> On Fri, 5 Apr 2019 at 18:24, Clément Péron <peron.clem@gmail.com> wrote:
> >
> > Hi,
> >
> > On Fri, 5 Apr 2019 at 17:08, Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > >
> > > On Fri, Apr 05, 2019 at 10:59:35PM +0800, Chen-Yu Tsai wrote:
> > > > On Fri, Apr 5, 2019 at 10:50 PM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > > > >
> > > > > On Fri, Apr 05, 2019 at 10:35:08PM +0800, Chen-Yu Tsai wrote:
> > > > > > On Fri, Apr 5, 2019 at 5:02 PM Maxime Ripard <maxime.ripard@bootlin.com> wrote:
> > > > > > >
> > > > > > > On Thu, Apr 04, 2019 at 03:57:36PM +0200, Clément Péron wrote:
> > > > > > > > Allwinner H6 has a watchog compatible with A31.
> > > > > > > >
> > > > > > > > Declare it in the device tree.
> > > > > > > >
> > > > > > > > Signed-off-by: Clément Péron <peron.clem@gmail.com>
> > > > > > >
> > > > > > > Applied both, thanks!
> > > > > > > Maxime
> > > > > >
> > > > > > IIRC there are 3 watchdogs on the H6. One is the trusted watchdog,
> > > > > > which should be reserved for underlying firmware.
> > > > > >
> > > > > > The other two are the normal and R-block watchdog. Although they
> > > > > > look the same, the "normal" one can't reset the system. :(
> > > > > > That one is actually the one ATF currently uses. So reboot doesn't
> > > > > > work on the H6.
> >
> > Some users report that the reboot on the PineH64 actually works.
> >
> > Clement
> >
> > > > >
> > > > > So that patch will not do anything then?
>
> Did some test and only interrupts are working right now. If the WDOG
> is configured to make the board reboot the system will be stuck :S
> Maybe better to disabled it for now and leave a comment.
I dropped the two patches
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2019-04-08 8:16 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-04 13:57 [PATCH 1/2] dt-bindings: watchdog: sunxi: Add H6 compatible Clément Péron
2019-04-04 13:57 ` Clément Péron
2019-04-04 13:57 ` [PATCH 2/2] arm64: dts: h6: Add watchdog node Clément Péron
2019-04-04 13:57 ` Clément Péron
2019-04-05 9:02 ` Maxime Ripard
2019-04-05 9:02 ` Maxime Ripard
2019-04-05 14:35 ` Chen-Yu Tsai
2019-04-05 14:35 ` Chen-Yu Tsai
2019-04-05 14:50 ` Maxime Ripard
2019-04-05 14:50 ` Maxime Ripard
2019-04-05 14:59 ` Chen-Yu Tsai
2019-04-05 14:59 ` Chen-Yu Tsai
2019-04-05 15:08 ` Maxime Ripard
2019-04-05 15:08 ` Maxime Ripard
2019-04-05 16:24 ` Clément Péron
2019-04-05 16:24 ` Clément Péron
2019-04-07 14:27 ` Clément Péron
2019-04-07 14:27 ` Clément Péron
2019-04-08 8:16 ` Maxime Ripard [this message]
2019-04-08 8:16 ` Maxime Ripard
2019-04-08 21:23 ` Clément Péron
2019-04-08 21:23 ` Clément Péron
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