Thread (27 messages) 27 messages, 2 authors, 2015-11-06

[PATCH v3 0/7] samsung: pmu: split up SoC specific PMU data

From: Krzysztof Kozlowski <hidden>
Date: 2015-11-06 00:18:27
Also in: linux-samsung-soc, lkml

On 05.11.2015 14:27, Pankaj Dubey wrote:
Hi Krzysztof,

On Tuesday 03 November 2015 07:36 AM, Krzysztof Kozlowski wrote:
quoted
On 26.10.2015 21:55, Pankaj Dubey wrote:
quoted
This patch series is a part of continuation work from following series
[1] and [2].

1: exynos: Move pmu driver to driver/soc folder and add exynos7 support
    http://www.spinics.net/lists/linux-samsung-soc/msg39797.html from
Amit Daniel Kacchap
2: soc: samsung: pmu: split up SoC specific PMU data
    https://lkml.org/lkml/2015/1/7/12 from me
+Cc Bartlomiej,

There were some concerns for previous versions of this patchset. I
cannot find all of them (e.g. Bartlomiej's are not present on lkml.org
anymore) so I am not sure if they were addressed properly.
Yes. If I recall correctly he has following main concerns:
1: To convert exynos-pmu to a proper platform driver before moving out
of arch/arm/mach-exynos. This is already addressed.

2: Do we really need common driver for both ARM and ARM64? I feel yes,
as at least I can see that driver's basic structure will be reused. As
in case of PMU driver most of lines of code is data part (register
offset and its values in different mode), that part will be kept in
separate file e.g. exynos7-pmu.c or exynosXXXX-pmu.c.
There has been already one attempt of submission for exynos7 PMU driver at:

http://lists.infradead.org/pipermail/linux-arm-kernel/2014-November/305418.html


3: He had a concern that in case of ARM64 build most of ARM related code
will be present in binary which will be dead code, that can be addressed
by excluding ARM based SoC exynosXXXX-pmu.c file in Makefile.
It has been taken care in v3 7/7 patch in drivers/soc/samsung/Makefile.
Sounds reasonable to me. Maybe someone will have other comments but for
me it's okay. When sending next version, please CC linux-pm mailing list
and arm-soc maintainers (Arnd, Olof, Kevin).

Best regards,
Krzysztof
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