| Message ID | 1357733199-17206-1-git-send-email-a.kesavan@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Wed, Jan 9, 2013 at 9:06 PM, Abhilash Kesavan <a.kesavan@samsung.com> wrote: > 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> Acked-by: MyungJoo Ham <myungjoo.ham@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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
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 */ + }; };
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