From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eddie Huang <eddie.huang@mediatek.com>
Subject: Re: [PATCH v5 4/5] ARM: dts: mt8135: enable basic SMP bringup for
 mt8135
Date: Mon, 26 Oct 2015 19:40:10 +0800
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To: Kevin Hilman <khilman@kernel.org>
Cc: Yingjoe Chen <yingjoe.chen@mediatek.com>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, Russell King - ARM Linux <linux@arm.linux.org.uk>, srv_heupstream@mediatek.com, Arnd Bergmann <arnd@arndb.de>, Tyler Baker <tyler.baker@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>, lkml <linux-kernel@vger.kernel.org>, Olof Johansson <olof@lixom.net>, Rob Herring <robh+dt@kernel.org>, linux-mediatek@lists.infradead.org, Sascha Hauer <kernel@pengutronix.de>, Matthias Brugger <matthias.bgg@gmail.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>
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Hi Kevin,

On Mon, 2015-10-26 at 17:06 +0900, Kevin Hilman wrote:
> On Mon, Oct 26, 2015 at 4:15 PM, Yingjoe Chen <yingjoe.chen@mediatek.com> wrote:
> > On Mon, 2015-10-26 at 09:56 +0900, Kevin Hilman wrote:
> >> Hello,
> >>
> >> On Sat, Oct 3, 2015 at 12:19 AM, Yingjoe Chen <yingjoe.chen@mediatek.com> wrote:
> >> > Add arch timer node to enable arch-timer support. MT8135 firmware
> >> > doesn't correctly setup arch-timer frequency and CNTVOFF, add
> >> > properties to workaround this.
> >> >
> >> > This also set cpu enable-method to enable SMP.
> >> >
> >> > Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
> >>
> >> kernelci.org started detecting new boot failures for the mt8135-evb in
> >> the arm-soc tree[1], and the boot failures were bisected down to this
> >> patch, which landed upstream in the form of commit d186a394bb98 (ARM:
> >> dts: mt8135: enable basic SMP bringup for mt8135)
> >>
> >> Maybe this new SMP support requires updating the firmware on the board
> >> as well?  If so, the changelog should've been a bit more explicit
> >> about firmware dependencies.
> >
> > Kevin,
> >
> > Thanks for testing.
> >
> > No, it doesn't need new firmware. Will test to see what's going wrong.
> 
> Thanks for following up.  I'll be glad to test any patches if you have
> anything you'd like me to test.

You need "clockevents/drivers/mtk: Fix spurious interrupt leading to
crash" (https://lkml.org/lkml/2015/8/24/803)

Daniel Lezcano already applied this patch in his tree for 4.4.
(https://git.linaro.org/people/daniel.lezcano/linux.git)

Eddie
Thanks