ARM: dts: AM33XX: Add PMU support

ARM Performance Monitor Units are available on the am33xx,
add the support in the dtsi.

Tested with perf and oprofile on a regular beaglebone.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index f9c5da9..4d1c632 100644 (file)
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -57,6 +57,11 @@
                };
        };
 
+       pmu {
+               compatible = "arm,cortex-a8-pmu";
+               interrupts = <3>;
+       };
+
        /*
         * The soc node represents the soc top level view. It is uses for IPs
         * that are not memory mapped in the MPU view or for the MPU itself.