lkml.org 
[lkml]   [2013]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 1/4] ARM: EXYNOS5: Add PPMU device tree support
    Date
    PPMU is required by the devfreq driver. Add a device tree
    node for it.

    Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
    Cc: Jonghwan Choi <jhbird.choi@samsung.com>
    Cc: Kukjin Kim <kgene.kim@samsung.com>
    ---
    .../bindings/arm/exynos/ppmu-exynos5.txt | 28 ++++++++++++++++++++
    arch/arm/boot/dts/exynos5250.dtsi | 9 ++++++
    2 files changed, 37 insertions(+), 0 deletions(-)
    create mode 100644 Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt

    diff --git a/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt b/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt
    new file mode 100644
    index 0000000..a424dfa
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/arm/exynos/ppmu-exynos5.txt
    @@ -0,0 +1,28 @@
    +Exynos5 PPMU driver
    +-------------------
    +
    +Performance events are primitive values used to get performance data. These
    +events provide information about the behavior of the SoC that can be used
    +when analyzing system performance. These events are made visible using the
    +PPMU logic.
    +Exynos5 PPMU driver is used by the exynos5 devfreq driver to control the bus
    +frequency/voltage.
    +
    +Required properties:
    +- compatible: should be one of the following.
    + * samsung,exynos5-ppmu - for exynos5250 type ppmu.
    +- reg:
    + * physical base address of the PPMUs (DDR, Right Bus and CPU) and
    + length of memory mapped region.
    +
    +Example:
    +--------
    +
    + ppmu {
    + compatible = "samsung,exynos5250-ppmu";
    + reg = <0x10C40000 0x2000
    + 0x10C50000 0x2000
    + 0x10C60000 0x2000
    + 0x10CB0000 0x2000
    + 0x13660000 0x2000>;
    + };
    diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
    index 30485de..d504cba 100644
    --- a/arch/arm/boot/dts/exynos5250.dtsi
    +++ b/arch/arm/boot/dts/exynos5250.dtsi
    @@ -732,4 +732,13 @@
    interrupt-parent = <&combiner>;
    interrupts = <24 1>;
    };
    +
    + ppmu {
    + compatible = "samsung,exynos5250-ppmu";
    + reg = <0x10C40000 0x2000 /* PPMU_DDR_C */
    + 0x10C50000 0x2000 /* PPMU_DDR_R1 */
    + 0x10CB0000 0x2000 /* PPMU_DDR_L */
    + 0x13660000 0x2000 /* PPMU_DDR_RIGHT */
    + 0x10C60000 0x2000>; /* PPMU_DDR_CPU */
    + };
    };
    --
    1.7.8.6


    \
     
     \ /
      Last update: 2013-01-09 13:41    [W:0.029 / U:0.008 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site