From: k.kozlowski@samsung•com (Krzysztof Kozlowski)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC] ARM: EXYNOS: reset KFC cores when cpu is up
Date: Wed, 15 Jul 2015 12:42:30 +0900 [thread overview]
Message-ID: <55A5D6A6.8080604@samsung.com> (raw)
In-Reply-To: <CAPTzV16VFu_0BN1xpuki3gN3btB-zFwuj+A8ibza14JKqaXXfA@mail.gmail.com>
On 15.07.2015 11:31, Chanho Park wrote:
> Hi,
>
> On Wed, Jul 15, 2015 at 10:46 AM, Krzysztof Kozlowski
> <k.kozlowski@samsung•com> wrote:
>> On 15.07.2015 10:36, Chanho Park wrote:
>>> The cpu booting of exynos5422 has been still broken since we discussed
>>> it in last year[1]. I found this resetting codes from odroid-xu3 kernel of
>>> hardkernel, it could help to boot 8 cores well. This patch need to have
>>> more test like STR and other SoC especially exynos5800 which is variant
>>> of exynos5422. If this patch is broken on exynos5800, I'll find another
>>> way to check exynos5422.
>>>
>>> This patch is top of my previous exynos5422 cpu ordering patch[2] and
>>> need to enable CONFIG_EXYNOS5420_MCPM=y
>>
>> 1. Why the ordering patch is required? It seems unrelated...
>
> Because it related with my booting log :)
>
>> 2. I tried this already (as in vendor sources from
>> opensource.samsung.com) and it did not help on my Odroid. Are you sure
>> that this patch solely fixes the problem?
>
> If you turned on CONFIG_DEBUG_LL, you'll need Joonyoung's patch to
> correct uart address of exynos5422.
> http://www.spinics.net/lists/linux-samsung-soc/msg37318.html
I mean that you don't need anything else to fix the problem? I'll give
it a try later on my board but I was quite sure that I checked this
before :) .
Best regards,
Krzysztof
next prev parent reply other threads:[~2015-07-15 3:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 1:36 [RFC] ARM: EXYNOS: reset KFC cores when cpu is up Chanho Park
2015-07-15 1:46 ` Krzysztof Kozlowski
2015-07-15 2:31 ` Chanho Park
2015-07-15 3:42 ` Krzysztof Kozlowski [this message]
2015-07-15 5:20 ` Anand Moon
2015-07-15 8:24 ` Javier Martinez Canillas
2015-07-16 0:34 ` Chanho Park
2015-07-15 11:35 ` Krzysztof Kozlowski
2015-07-16 1:36 ` Chanho Park
2015-07-16 1:49 ` Krzysztof Kozlowski
2015-08-29 7:45 ` Krzysztof Kozlowski
2015-07-17 8:05 ` Sjoerd Simons
2015-07-17 9:54 ` Krzysztof Kozlowski
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