Enable support for the ARM Performance Monitor Units in the Cortex-A15
CPU cores on R-Car M2-N by adding a device node for the PMU.
New Linux output:
hw perfevents: enabled with armv7_cortex_a15 PMU driver, 7 counters available
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
arch/arm/boot/dts/r8a7793.dtsi | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi
index 2fa052200495caef..4abecfc0ca98c483 100644
--- a/arch/arm/boot/dts/r8a7793.dtsi
+++ b/arch/arm/boot/dts/r8a7793.dtsi
@@ -110,6 +110,13 @@
clock-frequency = <0>;
};
+ pmu {
+ compatible = "arm,cortex-a15-pmu";
+ interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+ <&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-affinity = <&cpu0>, <&cpu1>;
+ };
+
/* External SCIF clock */
scif_clk: scif {
compatible = "fixed-clock";
--
2.7.4
