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Date: Mon, 11 Apr 2016 12:57:50 +0900 From: Chanwoo Choi <cw00.choi@...sung.com> To: myungjoo.ham@...sung.com, kyungmin.park@...sung.com, k.kozlowski@...sung.com, kgene@...nel.org, s.nawrocki@...sung.com, tomasz.figa@...il.com Cc: rjw@...ysocki.net, robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com, ijc+devicetree@...lion.org.uk, galak@...eaurora.org, linux@....linux.org.uk, linux.amoon@...il.com, m.reichl@...etechno.de, tjakobi@...h.uni-bielefeld.de, inki.dae@...sung.com, cw00.choi@...sung.com, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org Subject: [PATCH v9 12/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk This patch adds the DMC (Dynamic Memory Controller) bus frequency node which includes the devfreq-events and regulator properties. The bus frequency support the DVFS (Dynamic Voltage Frequency Scaling) feature with ondemand governor. The devfreq-events (ppmu_dmc0*) can monitor the utilization of DMC bus on runtime and the buck1_reg (VDD_MIF power line) supplies the power to the DMC block. Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com> Acked-by: MyungJoo Ham <myungjoo.ham@...sung.com> --- arch/arm/boot/dts/exynos3250-monk.dts | 6 ++++++ arch/arm/boot/dts/exynos3250-rinato.dts | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/exynos3250-monk.dts b/arch/arm/boot/dts/exynos3250-monk.dts index 9e2840b59ae8..1fd7ecb5c415 100644 --- a/arch/arm/boot/dts/exynos3250-monk.dts +++ b/arch/arm/boot/dts/exynos3250-monk.dts @@ -156,6 +156,12 @@ }; }; +&bus_dmc { + devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; + vdd-supply = <&buck1_reg>; + status = "okay"; +}; + &cpu0 { cpu0-supply = <&buck2_reg>; }; diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts index 1f102f3a1ab1..5175bd7e015f 100644 --- a/arch/arm/boot/dts/exynos3250-rinato.dts +++ b/arch/arm/boot/dts/exynos3250-rinato.dts @@ -147,6 +147,12 @@ }; }; +&bus_dmc { + devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; + vdd-supply = <&buck1_reg>; + status = "okay"; +}; + &cpu0 { cpu0-supply = <&buck2_reg>; }; -- 1.9.1
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