ARM: dts: r8a7790: Add PMU device nodes (5b683844) · Commits · 戴 / test

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>

arch/arm/boot/dts/r8a7790.dtsi

+18 −0

Original line number	Diff line number	Diff line
		@@ -202,6 +202,24 @@
		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 */
		scif_clk: scif {
		compatible = "fixed-clock";

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