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ARM: dts: imx7: add CPU PMU support

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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@agner.ch>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Stefan Agner 2018-02-27 16:16:10 +01:00 • committed by Shawn Guo
parent f10acffc55
commit a934a5834d
1 changed files with 6 additions and 0 deletions
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6
arch/arm/boot/dts/imx7s.dtsi
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@ -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 {
/*