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Date: Wed, 29 Oct 2014 18:05:03 +0900
From: Simon Horman <horms@verge.net.au>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linux-sh list <linux-sh@vger.kernel.org>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: non-Multiplatform APE6EVM broken in v3.18-rc1
Message-ID: <20141029090502.GA32069@verge.net.au>
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On Wed, Oct 29, 2014 at 09:13:11AM +0100, Geert Uytterhoeven wrote:
> On Wed, Oct 29, 2014 at 3:08 AM, Simon Horman <horms@verge.net.au> wrote:
> > On Wed, Oct 29, 2014 at 09:12:58AM +0900, Simon Horman wrote:
> >> On Tue, Oct 28, 2014 at 10:32:32AM +0100, Geert Uytterhoeven wrote:
> >> > On Tue, Oct 28, 2014 at 10:23 AM, Simon Horman <horms@verge.net.au> wrote:
> >> > > On Tue, Oct 28, 2014 at 08:59:28AM +0100, Geert Uytterhoeven wrote:
> >> > >> On Tue, Oct 28, 2014 at 1:41 AM, Simon Horman <horms@verge.net.au> wrote:
> >> > >> > I have noticed that there appears to be a regression between v3.17 and
> >> > >> > v3.18-rc1 such that non-multiplatform APE6EVM (ape6evm_defconfig) no longer
> >> > >> > boots.  This appears to be the case using both reference DT (MACH_APE6EVM)
> 
> > It seems that the boot stops here:
> >
> > ...
> > smsc911x smsc911x eth0: MAC Address: 00:08:f7:00:02:4b
> > rcar_thermal rcar_thermal: Runtime PM disabled, clock forced on.
> > rcar_thermal rcar_thermal: 3 sensor probed
> > sh_mobile_sdhi sh_mobile_sdhi.0: Runtime PM disabled, clock forced on.
> > sh_mobile_sdhi sh_mobile_sdhi.0: No vqmmc regulator found
> >
> > I re-ran my bisection and this time the following showed up as the culprit.
> >
> > I suspect that the initialisation of mmcif, which is usually the next
> > device to be initialised, sleeps and never wakes up because the timer is
> > disabled.
> >
> > commit c387f07e6205cc13f57c1def5f885bf0a20e1c2d
> > Author: Sudeep Holla <sudeep.holla@arm.com>
> > Date:   Mon Sep 29 01:50:05 2014 +0200
> >
> >     clocksource: arm_arch_timer: Discard unavailable timers correctly
> 
> Apparently reported and fixed by Laurent and a few others, cfr.
> http://www.spinics.net/lists/arm-kernel/msg371615.html

Great!