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ARM: dts: exynos: 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@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
This commit is contained in:
Chanwoo Choi 2016-04-11 12:57:50 +09:00 committed by Krzysztof Kozlowski
parent 6b088a62eb
commit e9a53680de
2 changed files with 12 additions and 0 deletions
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6
arch/arm/boot/dts/exynos3250-monk.dts
View File

@ -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>;
};

6
arch/arm/boot/dts/exynos3250-rinato.dts
View File

@ -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>;
};