linux-kernel - Re: [PATCH v2] ARM: OMAP4460: cpuidle: Extend PM_OMAP4_ROM_SMP_BOOT_ERRATUM

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Date:	Fri, 15 Nov 2013 07:36:08 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Grygorii Strashko <grygorii.strashko@...com>
Cc:	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Kevin Hilman <khilman@...aro.org>,
	Taras Kondratiuk <taras.kondratiuk@...aro.org>,
	open list <linux-kernel@...r.kernel.org>,
	linux-arm <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2] ARM: OMAP4460: cpuidle: Extend
 PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD on cpuidle

* Tony Lindgren <tony@...mide.com> [131114 10:36]:
> * Grygorii Strashko <grygorii.strashko@...com> [131022 12:09]:
> > The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
> > "ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC ..."
> > need to be applied not only when system is booting, but when MPUSS hits
> > OSWR state through CPUIdle too. Without this WA the same issue is
> > reproduced now on boards PandaES and Tablet/Blaze with SOM OMAP4460
> > when CONFIG_CPU_IDLE is enabled.
> > After MPUSS has enterred OSWR and waken up:
> > - GIC distributor became disabled forever
> > - scheduling is not performed any more
> > 
> > Cc: Kevin Hilman <khilman@...aro.org>
> > Acked-by: Santosh Shilimkar <santosh.shilimkar@...com>
> > Reported-by: Taras Kondratiuk <taras.kondratiuk@...aro.org>
> > Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
> 
> Applying into omap-for-v3.13/fixes thanks.

Hmm looks like this breaks the build with randconfigs at least
with the attached .config, so dropping for now.

arch/arm/mach-omap2/built-in.o: In function `omap_enter_idle_coupled':
:(.text+0xb48c): undefined reference to `pm44xx_errata'

Can you please check and repost?

Thanks,

Tony


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