From: Lukasz Luba <l.luba@partner.samsung.com>
To: linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org
Cc: tjakobi@math.uni-bielefeld.de, myungjoo.ham@samsung.com,
kyungmin.park@samsung.com, cw00.choi@samsung.com,
rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz,
gregkh@linuxfoundation.org, keescook@chromium.org,
anton@enomsg.org, ccross@android.com, tony.luck@intel.com,
robh+dt@kernel.org, mark.rutland@arm.com, kgene@kernel.org,
krzk@kernel.org, m.szyprowski@samsung.com,
b.zolnierkie@samsung.com,
Lukasz Luba <l.luba@partner.samsung.com>
Subject: [PATCH 6/6] arm: dts: exynos4: set opp-suspend for DMC and leftbus
Date: Wed, 21 Nov 2018 19:01:41 +0100 [thread overview]
Message-ID: <1542823301-23563-7-git-send-email-l.luba@partner.samsung.com> (raw)
In-Reply-To: <1542823301-23563-1-git-send-email-l.luba@partner.samsung.com>
Mark the state for devfreq device while entring suspend/resume process.
The patch draws on Tobias Jakobi's work posted ~2 years ago, who tried to
solve issue with devfreq device's frequency during suspend/resume.
During the discussion on LKML some corner cases and comments appeared
related to the design. This patch address them keeping in mind suggestions
from Chanwoo Choi.
Suggested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Suggested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
---
arch/arm/boot/dts/exynos4210.dtsi | 2 ++
arch/arm/boot/dts/exynos4412.dtsi | 2 ++
2 files changed, 4 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
index b6091c2..4429b72 100644
--- a/arch/arm/boot/dts/exynos4210.dtsi
+++ b/arch/arm/boot/dts/exynos4210.dtsi
@@ -298,6 +298,7 @@
opp-400000000 {
opp-hz = /bits/ 64 <400000000>;
opp-microvolt = <1150000>;
+ opp-suspend;
};
};
@@ -367,6 +368,7 @@
};
opp-200000000 {
opp-hz = /bits/ 64 <200000000>;
+ opp-suspend;
};
};
};
diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
index 51f72f0..908c0c4 100644
--- a/arch/arm/boot/dts/exynos4412.dtsi
+++ b/arch/arm/boot/dts/exynos4412.dtsi
@@ -432,6 +432,7 @@
opp-400000000 {
opp-hz = /bits/ 64 <400000000>;
opp-microvolt = <1050000>;
+ opp-suspend;
};
};
@@ -520,6 +521,7 @@
opp-200000000 {
opp-hz = /bits/ 64 <200000000>;
opp-microvolt = <1000000>;
+ opp-suspend;
};
};
--
2.7.4
next prev parent reply other threads:[~2018-11-21 18:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20181121180156eucas1p225af7f4341a039264ff26f2a9ad9bb12@eucas1p2.samsung.com>
2018-11-21 18:01 ` [PATCH 0/6] devfreq: handle suspend/resume Lukasz Luba
[not found] ` <CGME20181121180201eucas1p1f1f96941c3d16a96722e65d5c21bfe80@eucas1p1.samsung.com>
2018-11-21 18:01 ` [PATCH 1/6] devfreq: add basic fileds supporting suspend functionality Lukasz Luba
2018-11-22 2:37 ` Chanwoo Choi
[not found] ` <CGME20181121180202eucas1p27d3aa58411abeae03181c38b91fc67de@eucas1p2.samsung.com>
2018-11-21 18:01 ` [PATCH 2/6] devfreq: refactor set_target frequency function Lukasz Luba
2018-11-22 2:52 ` Chanwoo Choi
2018-11-22 2:54 ` Chanwoo Choi
2018-11-22 10:40 ` Lukasz Luba
2018-11-22 23:45 ` Chanwoo Choi
2018-11-23 9:58 ` Lukasz Luba
[not found] ` <CGME20181121180204eucas1p1c5891d498aa59c0e10dd3ba4727a4382@eucas1p1.samsung.com>
2018-11-21 18:01 ` [PATCH 3/6] devfreq: add support for suspend/resume of a devfreq device Lukasz Luba
2018-11-22 2:58 ` Chanwoo Choi
2018-11-22 11:00 ` Lukasz Luba
2018-11-22 23:54 ` Chanwoo Choi
2018-11-23 10:01 ` Lukasz Luba
2018-11-26 0:19 ` Chanwoo Choi
2018-12-03 14:05 ` Lukasz Luba
[not found] ` <CGME20181121180205eucas1p1dc52369476400cd07058d232bd8dbcd7@eucas1p1.samsung.com>
2018-11-21 18:01 ` [PATCH 4/6] devfreq: add devfreq_suspend/resume() functions Lukasz Luba
2018-11-22 3:07 ` Chanwoo Choi
2018-11-22 11:02 ` Lukasz Luba
[not found] ` <CGME20181121180206eucas1p265865226e3938a28e842e8367233dc2e@eucas1p2.samsung.com>
2018-11-21 18:01 ` [PATCH 5/6] drivers: power: suspend: call devfreq suspend/resume Lukasz Luba
2018-11-22 3:08 ` Chanwoo Choi
[not found] ` <CGME20181121180208eucas1p11482a783ab1b1bceb8c9f6a1f50682c3@eucas1p1.samsung.com>
2018-11-21 18:01 ` Lukasz Luba [this message]
2018-11-22 3:09 ` [PATCH 6/6] arm: dts: exynos4: set opp-suspend for DMC and leftbus Chanwoo Choi
2018-11-22 11:04 ` Lukasz Luba
2018-11-22 17:24 ` [PATCH 0/6] devfreq: handle suspend/resume Tobias Jakobi
2018-11-22 17:44 ` Lukasz Luba
[not found] ` <CGME20181121180201eucas1p1f1f96941c3d16a96722e65d5c21bfe80@epcms1p8>
2018-11-26 8:14 ` [PATCH 1/6] devfreq: add basic fileds supporting suspend functionality MyungJoo Ham
2018-12-03 14:03 ` Lukasz Luba
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