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ARM: dts: r8a7790: Add PMU device nodes

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Enable support for the ARM Performance Monitor Units in the Cortex-A15
and Cortex-A7 CPU cores on R-Car H2 by adding device nodes for the two
PMUs.

New Linux output:

    hw perfevents: enabled with armv7_cortex_a15 PMU driver, 7 counters available
    hw perfevents: /pmu-1: failed to probe PMU!
    hw perfevents: /pmu-1: failed to register PMU devices!

The last two lines are due to the Cortex-A7 CPU cores being described in
DT, but not enabled by the firmware.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven 2018-05-07 15:57:01 +02:00 committed by Simon Horman
parent 74a0e50d70
commit 5b68384469
1 changed files with 18 additions and 0 deletions
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18
arch/arm/boot/dts/r8a7790.dtsi
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@ -202,6 +202,24 @@
clock-frequency = <0>; clock-frequency = <0>;
}; };
pmu-0 {
compatible = "arm,cortex-a15-pmu";
interrupts-extended = <&gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
};
pmu-1 {
compatible = "arm,cortex-a7-pmu";
interrupts-extended = <&gic GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
<&gic GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
interrupt-affinity = <&cpu4>, <&cpu5>, <&cpu6>, <&cpu7>;
};
/* External SCIF clock */ /* External SCIF clock */
scif_clk: scif { scif_clk: scif {
compatible = "fixed-clock"; compatible = "fixed-clock";