linux-kernel - Re: [PATCH 0/3] ARM: EXYNOS: Fix Exynos5410 boot

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Date:	Thu, 31 Jul 2014 05:59:05 +0200
From:	Andreas Färber <afaerber@...e.de>
To:	Kukjin Kim <kgene.kim@...sung.com>,
	Doug Anderson <dianders@...omium.org>
CC:	'Olof Johansson' <olof@...om.net>,
	linux-samsung-soc@...r.kernel.org,
	'Tarek Dakhran' <t.dakhran@...sung.com>,
	'Kevin Hilman' <khilman@...aro.org>,
	'Pankaj Dubey' <pankaj.dubey@...sung.com>,
	'Tomasz Figa' <t.figa@...sung.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Ajay Kumar <ajaykumar.rs@...sung.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Subject: Re: [PATCH 0/3] ARM: EXYNOS: Fix Exynos5410 boot

Hi Kukjin,

Am 31.07.2014 03:10, schrieb Kukjin Kim:
> Olof Johansson wrote:
>>
>> Hi,
>>
> Hi Olof,
> 
>> On Sun, Jul 27, 2014 at 5:39 PM, Kukjin Kim <kgene.kim@...sung.com> wrote:
>>> Andreas Färber wrote:
>>>>
>>>> Am 27.07.2014 14:22, schrieb Andreas Färber:
>>>>> Hello,
>>>>>
>>>>> This mini-series unbreaks booting on 5410 based ODROID-XU.
>>>>>
>>>>> Since I do not have access to a TRM, the address is a guess based on
>>>>> 5250 and 5410. Such a node was not present in the 3.14 downstream tree.
>>>>
>>>> s/5410/5420/
>>>>
>>> OK.
>>>
>>>>>
>>>>> Regards,
>>>>> Andreas
>>>>>
>>>>> Andreas Färber (3):
>>>>>   Documentation: devicetree: Document exynos5410 PMU
>>>>>   ARM: dts: exynos: Add PMU to Exynos5410
>>>>>   ARM: EXYNOS: Add support for Exynos5410 PMU
>>>>>
>>>>>  Documentation/devicetree/bindings/arm/samsung/pmu.txt | 1 +
>>>>>  arch/arm/boot/dts/exynos5410.dtsi                     | 5 +++++
>>>>>  arch/arm/mach-exynos/exynos.c                         | 1 +
>>>>>  3 files changed, 7 insertions(+)
>>>>
>>> Andreas, thanks.
>>>
>>> I'll apply this whole series.
>>
>> We're getting close to the merge window. I'd prefer not to have to
>> start reverting samsung code to recover from these regressions, so
>> please send this up very soon.
>>
> Thanks for your gentle reminder.
> 
> BTW I'm waiting for exynos5250-spring support from Andreas and I'd like to get
> confirmation about that from Doug. And I'm looking at s2r related patches now.
> 
> OK, I will send out current samsung tree tonight in my time anyway.

That would be kind.

Patches 2-3 in spring v3 should be non-functional snow refactorings for
you to consider, but untested by me; patch 1 you could skip if you
modify patch 2, if necessary. As for patch 4, you can see from my
spring-next branch [1] how I am successfully testing it with a TEST_ONLY
patch: For simplefb usage I comment out the /dp-controller node to avoid
drm/exynos detection (not enabling the driver in the user's .config
would be an alternative); when I run into issues with the drm during
testing, I can usually ssh in via USB ethernet/wifi.

In the dmesg for drm/exynos bridge series testing [2] (which I guess is
not gonna hit 3.17 any more?) I noticed that the USB3503 /usb-hub node
new in v3 is not working yet (complains about lack of #gpio-cells, I
guess for my reset-gpios property), not sure how to fix, so we/you could
probably just drop that node - preparing to test that now.

As for the rest of patch 4, it's a new DT, so we could fix up any
remaining bugs during 3.17 RC cycle, if it looks sane to you guys now. I
had replied to two series - namely cpufreq [3] and dwmmc [4] - where
merge conflicts might arise. Let me know if you need a respin for anything.

Regards,
Andreas

[1] https://github.com/afaerber/linux/commits/spring-next
[2]
http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34927.html
[3]
http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34807.html
[4]
http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34898.html

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