linux-kernel - Re: [GIT PULL] Devicetree updates for v6.13

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Message-ID: <CAL_Jsq+QBweDZ+1=FXq7Hez=+mhiOxOvurr3rP0+3y_FCd49Ew@mail.gmail.com>
Date: Mon, 25 Nov 2024 09:15:56 -0600
From: Rob Herring <robh@...nel.org>
To: Sasha Levin <sashal@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Chen-Yu Tsai <wenst@...omium.org>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
	Linus Torvalds <torvalds@...ux-foundation.org>, Saravana Kannan <saravanak@...gle.com>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
	Matthias Brugger <matthias.bgg@...il.com>
Subject: Re: [GIT PULL] Devicetree updates for v6.13

On Mon, Nov 25, 2024 at 7:24 AM Sasha Levin <sashal@...nel.org> wrote:
>
> On Mon, Nov 25, 2024 at 12:33:48PM +0100, Krzysztof Kozlowski wrote:
> >On 25/11/2024 12:00, Krzysztof Kozlowski wrote:
> >> On 25/11/2024 11:34, Chen-Yu Tsai wrote:
> >>> On Mon, Nov 25, 2024 at 5:48 PM AngeloGioacchino Del Regno
> >>> <angelogioacchino.delregno@...labora.com> wrote:
> >>>>
> >>>> Il 24/11/24 17:59, Sasha Levin ha scritto:
> >>>>> On Sun, Nov 24, 2024 at 05:47:33PM +0100, Krzysztof Kozlowski wrote:
> >>>>>> On 24/11/2024 17:29, Sasha Levin wrote:
> >>>>>>> Hi Rob,
> >>>>>>>
> >>>>>>> On Mon, Nov 18, 2024 at 03:07:30PM -0600, Rob Herring wrote:
> >>>>>>>>      of: WARN on deprecated #address-cells/#size-cells handling
> >>>>>>>
> >>>>>>> With the commit above, I've started seeing boot warnings on a few
> >>>>>>
> >>>>>> And same boards do not report problems on the next?
> >>>>>
> >>>>> Looks like they do. I haven't checked it previously, but I see that we
> >>>>> have similar warnings on a few boards that KernelCI is testing -next on.
> >>>>>
> >>>>
> >>>> That's... horrendous.
> >>>>
> >>>> I hope that we can get a proper fix with a bootloader update on these (now very
> >>>> old) devices... Adding a Google engineer to the loop so that he can follow up
> >>>> internally.
> >>>
> >>> AFAIK that's unlikely going to happen given the resources needed from
> >>> the ODMs for a firmware re-qualification. Or we would have fixed the GIC
> >>> bug in ATF and had pseudo-NMI.
> >>>
> >>> Some of the firmware code involved is 10 years old, so even the RK3399
> >>> Chromebooks, which no longer have support, could suffer from this as
> >>> well.
> >>>
> >>>> The alternative would be to hack-in a firmware node to mt8183-kukui.dtsi, but....
> >>>> ...ugh. That'd be indeed a hack for the sole purpose of fixing a bootloader that
> >>>> is acting in a broken way, and I don't like that at all (...and I'm sure I'm not
> >>>> alone!).
> >>>
> >>
> >> Then we should add it to the exception list. Let me take a look at this.
> >https://lore.kernel.org/linux-devicetree/20241125113151.107812-1-krzysztof.kozlowski@linaro.org/T/#u
> >
> >I sent a fix for this platform only. You did not paste links to other
> >failing platforms (and sorry but kernelci web interface was absolutely
> >unmanageable and unusable, so I am not going to even try to look for
> >them) so not sure who should be added to list of exceptions.
>
> The new dashboard isn't *that* bad :)

You are reporting this issue because it is that bad. I tested this on
KCI before this even went to next. I gave up trying to get boot logs
out from all the boards. Though which boards run seems to be a crap
shoot, but that's not a dashboard problem.

>
> A list of platforms that show this issue:
>
> - google,spherion-rev3 | google,spherion-rev2
> - google,steelix-sku131072 | google,steelix
> - google,tomato-rev2 | google,tomato | mediatek,mt8195
> - google,juniper-sku16 | google,juniper | mediatek,mt8183
> - google,kingoftown | qcom,sc7180
> - google,lazor-rev5-sku5 | google,lazor-rev5-sku6

Can I get a dump of the DTB for one of these boards? The upstream dts
files don't seem to have a /firmware node.

Rob