Re: [PATCH 4/6] ARM: dts: Exynos4210: add CPU OPP and regulator supply property

[Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>]

On Monday, July 13, 2015 01:20:41 PM Bartlomiej Zolnierkiewicz wrote:
> On Monday, July 13, 2015 08:10:21 PM Krzysztof Kozlowski wrote:
> > 2015-07-13 20:02 GMT+09:00 Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>:
> > >
> > > Hi,
> > >
> > > On Tuesday, June 23, 2015 09:24:40 AM Krzysztof Kozlowski wrote:
> > >> On 23.06.2015 08:46, Krzysztof Kozlowski wrote:
> > >> > On 23.06.2015 00:04, Michael Turquette wrote:
> > >> >> Quoting Kukjin Kim (2015-06-21 18:46:26)
> > >> >>> Krzysztof Kozlowski wrote:
> > >> >>>>
> > >> >>>> On 22.06.2015 10:38, Kukjin Kim wrote:
> > >> >>>>> Krzysztof Kozlowski wrote:
> > >> >>>>>> 2015-05-08 9:18 GMT+09:00 Krzysztof Kozlowski <k.kozlowski@samsung.com>:
> > >> >>>>>>> 2015-04-04 1:43 GMT+09:00 Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>:
> > >> >>>>>>>> From: Thomas Abraham <thomas.ab@samsung.com>
> > >> >>>>>>>>
> > >> >>>>>>>> For Exynos4210 platforms, add CPU operating points and CPU
> > >> >>>>>>>> regulator supply properties for migrating from Exynos specific
> > >> >>>>>>>> cpufreq driver to using generic cpufreq driver.
> > >> >>>>>>>>
> > >> >>>>>>>> Changes by Bartlomiej:
> > >> >>>>>>>> - removed Exynos5250 and Exynos5420 support for now
> > >> >>>>>>>>
> > >> >>>>>>>> Cc: Kukjin Kim <kgene.kim@samsung.com>
> > >> >>>>>>>> Cc: Doug Anderson <dianders@chromium.org>
> > >> >>>>>>>> Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> > >> >>>>>>>> Cc: Andreas Faerber <afaerber@suse.de>
> > >> >>>>>>>> Cc: Sachin Kamat <sachin.kamat@linaro.org>
> > >> >>>>>>>> Cc: Andreas Farber <afaerber@suse.de>
> > >> >>>>>>>> Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> > >> >>>>>>>> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
> > >> >>>>>>>> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> > >> >>>>>>>
> > >> >>>>>>> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> > >> >>>>>>
> > >> >>>>>> Rebased and applied to my tree, I'll sent it later to Kukjin unless he
> > >> >>>>>> picks it by himself from LKML.
> > >> >>>>>>
> > >> >>>>> Hi, as far as I know, this is for v4.2 not v4.1 so it will be applied based on
> > >> >>>>> v4.2-rc1 after v4.2-rc1 release.
> > >> >>>>
> > >> >>>> You mean it is for v4.3, not v4.2?
> > >> >>>>
> > >> >>> Oops, yes v4.3.
> > >> >>>
> > >> >>> Thanks for the correction.
> > >> >>
> > >> >> Kukjin & Krzysztof,
> > >> >>
> > >> >> I'm confused on this point. I was planning to take patches 1, 2, 3, 5
> > >> >> and 6 towards 4.2 (e.g. in the pull request that I'll send out this
> > >> >> week).
> > >> >>
> > >> >> Is patch 4 going out for 4.2 or 4.3?
> > >> >
> > >> > It is quite late for sending pull request to arm-soc for 4.2.
> > >> > For example SoCFPGA pull request from last week was rejected:
> > >> > http://comments.gmane.org/gmane.linux.ports.arm.kernel/417980
> > >>
> > >> Oh, that was wrong link. Here it is:
> > >> http://www.spinics.net/lists/arm-kernel/msg425911.html
> > >>
> > >> > If you want to take it for 4.2 then I am fine with it but this will
> > >> > cause some easy but annoying conflicts. There aren't difficult - just
> > >> > most of nodes in board DTS changed their place.
> > >> >
> > >> > Example of resolution (target file after merge, with cpu nodes reordered
> > >> > alphabetically):
> > >> > https://github.com/krzk/linux/commit/2cec3cb48abaf44848c62f1c0836b772eb4680dd
> > >
> > > This patch is needed for v4.2 as other changes has been already
> > > merged.
> > >
> > > Krzysztof/Kukjin, could you please take care of it?
> > 
> > Of course! It is already in my queue. I'll send it later to Kukjin for
> > 4.3 (unless he picks it also).
> 
> It is in your queue for v4.3 but the patch is needed for v4.2,
> without it cpufreq support will not work for Exynos4210 platforms.
> 
> > BTW for other patchsets you still need acks from Samsung clock
> > maintainers. Did you poke Sylwester or Tomasz about it?
> 
> Sylwester, please review/ack Samsung specific clock changes in
> Exynos5250 cpufreq and Exynos4x12 cpufreq patch series.
> 
> Patch series:
> 
> * [PATCH v3 0/4] cpufreq: use generic cpufreq drivers for Exynos5250 platform
>   (http://lkml.org/lkml/2015/7/1/311)
> 
> * [PATCH v2 0/7] cpufreq: use generic cpufreq drivers for Exynos4x12 platform
>   (http://lkml.org/lkml/2015/7/9/419)
> 
> Samsung clock specific changes:
> 
> * [PATCH v3 1/4] clk: samsung: exynos5250: add cpu clock configuration data
>   and instantiate cpu clock
>   (http://lkml.org/lkml/2015/7/1/313)
> 
> * [PATCH v2 4/7] clk: samsung: exynos4x12: add cpu clock configuration data
>   and instantiate cpu clock
>   (http://lkml.org/lkml/2015/7/9/424)

BTW corresponding changes for Exynos4210 has already been merged and 2 above
patches are quite obvious so review should be very quick & simple.

[ Unfortunately Sylwester is currently very busy with a more priority work so
  it may still take some time to get his ACKs. ]

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics