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Date: Fri, 30 Sep 2016 19:05:03 +0900
From: Hiep Cao Minh <cm-hiep@jinso.co.jp>
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To: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Xuan Truong Nguyen <nx-truong@jinso.co.jp>,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
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        Ryusuke Sakato <ryusuke.sakato.bx@renesas.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
        Magnus Damm <magnus.damm@gmail.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
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        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
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        Simon Horman <horms+renesas@verge.net.au>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
        Wolfram Sang <wsa@sang-engineering.com>
Subject: Re: GEN2:Lager: Only 1 core works when turning off the SW8-PIN4
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Hi Geert,


>>> The issue you're seeing is due to a combination of commits
>>> 5f3bca0db8ac01a7
>>> ("ARM: shmobile: apmu: Add APMU DT support via Enable method") and
>>> dc378795156d980c ("ARM: dts: r8a7790: Add APMU nodes").
>>>
>>> When debug mode is enabled (SW8-4 = OFF), trying to boot secondary CPUs
>>> may
>>> lock up the system after a cold boot, depending of boot load version.
>>> Hence
>>> we explicitly prohibit that. BTW, this has been the case on Koelsch since
>>> commit
>>> 277efd30cfc72ec2 ("ARM: shmobile: Check r8a7791 MD21 at SMP boot").
>>>
>>> Now, does series "[PATCH/RFT 0/4] ARM: shmobile: R-Car Gen2: Allow booting
>>> secondary CPU cores in debug mode" (included in all renesas-drivers
>>> releases
>>> during September) fix it for you?
>> Thanks for your series patches.
>> I have had some problems of receiving post mail from Linux-Renesas Mailing
>> List recently.
>>
>> Could you please forward these series patches to me?
> They're included in renesas-drivers.
> You can also get them from gitweb at
> https://git.kernel.org/cgit/linux/kernel/git/geert/renesas-drivers.git/log/?h=topic/rcar-secondary-booting-in-debug-mode-v1
Thanks, I'll confirm these patches on my board.


Thank you.
Hiep.