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Date:   Thu, 22 Nov 2018 12:09:31 +0900
From:   Chanwoo Choi <cw00.choi@samsung.com>
Organization: Samsung Electronics
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To:     Lukasz Luba <l.luba@partner.samsung.com>,
        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, 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
Subject: Re: [PATCH 6/6] arm: dts: exynos4: set opp-suspend for DMC and
 leftbus
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        <1542823301-23563-7-git-send-email-l.luba@partner.samsung.com>
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Hi,

On 2018년 11월 22일 03:01, Lukasz Luba wrote:
> 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(+)

Looks good to me.
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

> 
> 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;
>  			};
>  		};
>  
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics