From: "Andreas Färber" <afaerber@suse.de>
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>
Subject: Re: Enabling 8 cores on 5420
Date: Fri, 30 May 2014 17:12:56 +0200 [thread overview]
Message-ID: <53889FF8.8050003@suse.de> (raw)
In-Reply-To: <53889C25.3080706@linaro.org>
Am 30.05.2014 16:56, schrieb Daniel Lezcano:
> On 05/30/2014 03:33 PM, Andreas Färber wrote:
>> Am 30.05.2014 11:25, schrieb Daniel Lezcano:
>>>
>>> I am trying an upstream kernel + some patches to enable ethernet on
>>> arndale octa.
>>>
>>> Unfortunately, only 4 cores boot up. The other ones fail to boot.
>>>
>>> [12.179453] CPU6: failed to come online
>>> [13.189479] CPU7: failed to come online
>>> [14.199479] CPU4: failed to come online
>>> [15.209743] CPU5: failed to come online
>>>
>>> What should I do to enable those 8 cores ? Is there a patchset somewhere
>>> to do so ?
>>
>> Yes, this is the reply I received just yesterday from Tushar Behera:
>>> Can you check after applying following two patches for Arndale-Octa
>>> ([1],[2])? In other words, a patch similar to [2] might be required
>>> for this board too if it is booting under secure mode.
>>>
>>> [1] http://www.spinics.net/lists/linux-samsung-soc/msg31776.html
>>>
>>> [PATCH v2 Resend 1/2] ARM: EXYNOS: Update secondary boot addr for
>>> secure mode
>>>
>>> [2] http://www.spinics.net/lists/linux-samsung-soc/msg31777.html
>>>
>>> [PATCH v2 Resend 2/2] ARM: dts: Add secure firmware support for
>>> Arndale-octa
>>
>> The first one I tested successfully on the 5410 already.
>
> Hi Andreas,
>
> thx for the pointers. I tested the patches but unfortunately they don't
> enable the cpus.
Oh sorry, I just read "failed to come online" but didn't notice it's
about 4-7 only. All eight are available as nodes under /cpus on for-next
[1], so no clue on my part. The Samsung guys will know better.
Cheers,
Andreas
[1]
http://git.kernel.org/cgit/linux/kernel/git/kgene/linux-samsung.git/tree/arch/arm/boot/dts/exynos5420.dtsi?h=for-next
--
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next prev parent reply other threads:[~2014-05-30 15:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-30 9:25 Enabling 8 cores on 5420 Daniel Lezcano
2014-05-30 13:33 ` Andreas Färber
2014-05-30 14:56 ` Daniel Lezcano
2014-05-30 15:12 ` Andreas Färber [this message]
2014-06-22 21:02 ` Andreas Färber
2014-06-22 21:30 ` Alim Akhtar
2014-06-23 12:04 ` Daniel Lezcano
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