lkml.org 
[lkml]   [2016]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v7 12/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk
    Date
    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>
    ---
    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
    \
     
     \ /
      Last update: 2016-03-31 11:41    [W:3.447 / U:0.340 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site