ARM: dts: r8a7794: Add PMU device node

Enable support for the ARM Performance Monitor Units in the Cortex-A7
CPU cores on R-Car E2 by adding a device node for the PMU.

New Linux output:

    hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index 76aadcdf9d37b39cf9893ec42ea7705ff34b6a68..736196903d22f0e09650ac9b7644476369040603 100644 (file)
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -103,6 +103,13 @@
                clock-frequency = <0>;
        };
 
+       pmu {
+               compatible = "arm,cortex-a7-pmu";
+               interrupts-extended = <&gic GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
+                                     <&gic GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+               interrupt-affinity = <&cpu0>, <&cpu1>;
+       };
+
        /* External SCIF clock */
        scif_clk: scif {
                compatible = "fixed-clock";