From: Krzysztof Kozlowski <krzk@kernel.org>
To: Kamil Konieczny <k.konieczny@partner.samsung.com>
Cc: Mark Rutland <mark.rutland@arm.com>, Nishanth Menon <nm@ti.com>,
"linux-samsung-soc@vger.kernel.org"
<linux-samsung-soc@vger.kernel.org>,
linux-arm-kernel@lists.infradead.org,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Stephen Boyd <sboyd@kernel.org>,
Viresh Kumar <vireshk@kernel.org>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
Rob Herring <robh+dt@kernel.org>,
Chanwoo Choi <cw00.choi@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Kukjin Kim <kgene@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
devicetree@vger.kernel.org,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: Re: [PATCH 0/3] add coupled regulators for Exynos5422/5800
Date: Wed, 10 Jul 2019 19:01:02 +0200 [thread overview]
Message-ID: <CAJKOXPcX9vzoK-w16P4LiWjYMwXLUjSvNxdjp6nUXDjAK0rEcw@mail.gmail.com> (raw)
In-Reply-To: <631ffd68-7aab-2483-8799-2019bf3bb444@partner.samsung.com>
On Wed, 10 Jul 2019 at 15:51, Kamil Konieczny
<k.konieczny@partner.samsung.com> wrote:
>
> On 10.07.2019 12:14, Krzysztof Kozlowski wrote:
> > On Wed, 10 Jul 2019 at 12:03, Kamil Konieczny
> > <k.konieczny@partner.samsung.com> wrote:
> >>
> >> On 10.07.2019 11:00, Krzysztof Kozlowski wrote:
> >>> On Mon, 8 Jul 2019 at 16:12, <k.konieczny@partner.samsung.com> wrote:
> >>>>
> >>>> From: Kamil Konieczny <k.konieczny@partner.samsung.com>
> >>>>
> >>>> Hi,
> >>>>
> >>>> The main purpose of this patch series is to add coupled regulators for
> >>>> Exynos5422/5800 to keep constrain on voltage difference between vdd_arm
> >>>> and vdd_int to be at most 300mV. In exynos-bus instead of using
> >>>> regulator_set_voltage_tol() with default voltage tolerance it should be
> >>>> used regulator_set_voltage_triplet() with volatege range, and this is
> >>>> already present in opp/core.c code, so it can be reused. While at this,
> >>>> move setting regulators into opp/core.
> >>>>
> >>>> This patchset was tested on Odroid XU3.
> >>>>
> >>>> The last patch depends on two previous.
> >>>
> >>> So you break the ABI... I assume that patchset maintains
> >>> bisectability. However there is no explanation why ABI break is needed
> >>> so this does not look good...
> >>
> >> Patchset is bisectable, first one is simple and do not depends on others,
> >> second depends on first, last depends on first and second.
> >>
> >> What do you mean by breaking ABI ?
> >
> > I mean, that Linux kernel stops working with existing DTBs... or am I
> > mistaken and there is no problem? Maybe I confused the order...
>
> It is not ABI break, it should work with existing DTBs
Ah, thanks. My misunderstanding then. Looks good.
Best regards,
Krzysztof
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prev parent reply other threads:[~2019-07-10 17:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190708141158eucas1p17d4b50978dbe1e5c876ce6d8f433cc95@eucas1p1.samsung.com>
2019-07-08 14:11 ` [PATCH 0/3] add coupled regulators for Exynos5422/5800 k.konieczny
[not found] ` <CGME20190708141159eucas1p1751506975ff96a436e14940916623722@eucas1p1.samsung.com>
2019-07-08 14:11 ` [PATCH 1/3] opp: core: add regulators enable and disable k.konieczny
2019-07-09 5:40 ` Viresh Kumar
2019-07-10 10:16 ` Kamil Konieczny
2019-07-10 10:42 ` Kamil Konieczny
2019-07-10 10:43 ` Kamil Konieczny
2019-07-10 13:52 ` Kamil Konieczny
2019-07-10 17:01 ` Krzysztof Kozlowski
2019-07-11 6:22 ` Viresh Kumar
2019-07-11 12:58 ` Kamil Konieczny
[not found] ` <CGME20190708141200eucas1p144ca3b2a5b4019aaa5773d23c0236f31@eucas1p1.samsung.com>
2019-07-08 14:11 ` [PATCH 2/3] devfreq: exynos-bus: convert to use dev_pm_opp_set_rate() k.konieczny
2019-07-10 17:04 ` Krzysztof Kozlowski
2019-07-11 13:36 ` Kamil Konieczny
[not found] ` <CGME20190708141200eucas1p12bf901a2589efe92b133b357d2cbc57e@eucas1p1.samsung.com>
2019-07-08 14:11 ` [PATCH 3/3] ARM: dts: exynos: add initial data for coupled regulators for Exynos5422/5800 k.konieczny
2019-07-10 9:02 ` Krzysztof Kozlowski
2019-07-10 9:00 ` [PATCH 0/3] add " Krzysztof Kozlowski
2019-07-10 10:03 ` Kamil Konieczny
2019-07-10 10:14 ` Krzysztof Kozlowski
2019-07-10 13:51 ` Kamil Konieczny
2019-07-10 17:01 ` Krzysztof Kozlowski [this message]
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