From: Marian Mihailescu <mihailescu2m@xxxxxxxxx>
Enable support for ARM Performance Monitoring Units available in Cortex-A7
and Cortex-A15 CPU cores for Exynos54xx SoCs (5410, 5420 and 5422/5800).
Exynos5410 currently has only Cortex-A7 nodes defined in the device tree,
so the Cortex-A15 PMU is defined in the exynos5420 device tree file.
Tested with perf on Odroid XU4 (Exynos5422):
armv7_cortex_a7 PMU driver: 5 counters available
armv7_cortex_a15 PMU driver: 7 counters available
Suggested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Marian Mihailescu <mihailescu2m@xxxxxxxxx>
Signed-off-by: Willy Wolff <willy.mh.wolff@xxxxxxxxx>
---
arch/arm/boot/dts/exynos5420.dtsi | 13 +++++++++++++
arch/arm/boot/dts/exynos54xx.dtsi | 13 +++++++++++++
2 files changed, 26 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 02d2f89..468059e 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -695,6 +695,19 @@
iommus = <&sysmmu_jpeg1>;
};
+ arm-a15-pmu {
+ compatible = "arm,cortex-a15-pmu";
+ interrupt-parent = <&combiner>;
+ interrupts = <1 2>,
+ <7 0>,
+ <16 6>,
+ <19 2>;
+ interrupt-affinity = <&cpu4>,
+ <&cpu5>,
+ <&cpu6>,
+ <&cpu7>;
+ };
+
pmu_system_controller: system-controller@10040000 {
compatible = "samsung,exynos5420-pmu", "syscon";
reg = <0x10040000 0x5000>;
diff --git a/arch/arm/boot/dts/exynos54xx.dtsi b/arch/arm/boot/dts/exynos54xx.dtsi
index 8ca4fef..8e007a4 100644
--- a/arch/arm/boot/dts/exynos54xx.dtsi
+++ b/arch/arm/boot/dts/exynos54xx.dtsi
@@ -79,6 +79,19 @@
interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
};
+ arm-a7-pmu {
+ compatible = "arm,cortex-a7-pmu";
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-affinity = <&cpu0>,
+ <&cpu1>,
+ <&cpu2>,
+ <&cpu3>;
+ };
+
sss: sss@10830000 {
compatible = "samsung,exynos4210-secss";
reg = <0x10830000 0x300>;
--
2.7.4
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