From: ulf.hansson@linaro.org (Ulf Hansson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/5] ARM: dts: exynos: add support for ISP power domain to exynos4x12 clocks device
Date: Thu, 15 Sep 2016 16:13:31 +0200 [thread overview]
Message-ID: <CAPDyKFpibwe2fgviT8z3atd4RJUBx1PMNuG3txbjAa5qY8o_dg@mail.gmail.com> (raw)
In-Reply-To: <6e52af56-8b0e-d8c4-62c2-6efeee0e912d@samsung.com>
[...]
>>> I see some serious design problems with multiple entries in power domains
>>> property. First how to show that some part of the device IS NOT in
>>> any domain?
>>
>> Is that even possible? Every device should be in some power
>> domain, even if it's just an "always on" power domain that we
>> don't really control from software.
>
>
> Right now none dts of which I'm aware of doesn't define the power domain for
> the parts of the SoC, which are always on and doesn't need any additional
> management.
Actually there's is one reason for doing this, as it would allow
devices to be monitored for device PM QoS constraints by the genpd
governor.
Although, I doubt's someone actually does it because of this benefit,
at least yet.
[...]
Kind regards
Uffe
next prev parent reply other threads:[~2016-09-15 14:13 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-01 13:45 [PATCH 0/5] Add runtime PM support for clocks (on Exynos SoC example) Marek Szyprowski
2016-09-01 13:45 ` [PATCH 1/5] clk: add support for runtime pm Marek Szyprowski
2016-09-01 15:10 ` kbuild test robot
2016-09-01 15:10 ` [PATCH] clk: fix boolreturn.cocci warnings kbuild test robot
2016-09-08 0:19 ` [PATCH 1/5] clk: add support for runtime pm Stephen Boyd
[not found] ` <CGME20160912101857eucas1p29b2bbd5ac0eda92284091ad1b86decc4@eucas1p2.samsung.com>
2016-09-12 10:18 ` Marek Szyprowski
2016-09-12 22:31 ` Stephen Boyd
2016-09-13 9:07 ` Marek Szyprowski
2016-09-14 21:39 ` Stephen Boyd
2016-09-15 8:32 ` Marek Szyprowski
2016-09-13 7:24 ` Ulf Hansson
2016-09-13 8:49 ` Ulf Hansson
2016-09-13 13:13 ` Marek Szyprowski
2016-09-13 15:03 ` Ulf Hansson
2016-09-14 10:11 ` Marek Szyprowski
2016-09-01 13:45 ` [PATCH 2/5] clock: samsung: " Marek Szyprowski
2016-09-01 13:45 ` [PATCH 3/5] clocks: exynos4x12: add runtime pm support for ISP clocks Marek Szyprowski
2016-09-01 21:49 ` kbuild test robot
2016-09-01 13:45 ` [PATCH 4/5] ARM: dts: exynos: add support for ISP power domain to exynos4x12 clocks device Marek Szyprowski
2016-09-08 0:22 ` Stephen Boyd
[not found] ` <CGME20160912102332eucas1p145e79669788329b44343da62dcbe50ca@eucas1p1.samsung.com>
2016-09-12 10:23 ` Marek Szyprowski
2016-09-12 22:28 ` Stephen Boyd
2016-09-15 12:06 ` Marek Szyprowski
2016-09-15 14:13 ` Ulf Hansson [this message]
2016-09-01 13:45 ` [PATCH 5/5] clocks: exynos5433: add runtime pm support Marek Szyprowski
2016-09-01 16:55 ` Bartlomiej Zolnierkiewicz
2016-09-01 23:00 ` kbuild test robot
2016-09-02 19:05 ` kbuild test robot
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