Enable support for ARM Performance Monitoring Units available
on the Cortex-A7 CPU. There is only a single interrupt for the
PMU in both variants of the family, i.MX 7Solo and 7Dual.
Tested with perf on a i.MX 7Dual:
hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
---
arch/arm/boot/dts/imx7s.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 9aa2bb998552..a6d8f35c4255 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -130,6 +130,12 @@
#phy-cells = <0>;
};
+ pmu {
+ compatible = "arm,cortex-a7-pmu";
+ interrupt-parent = <&gpc>;
+ interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-affinity = <&cpu0>;
+ };
replicator {
/*
--
2.16.2
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