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@xxxxxxxxxxxxxxxxxxxxx>
Suggested-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Signed-off-by: Lukasz Luba <l.luba@xxxxxxxxxxxxxxxxxxx>
---
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
