From 5b68384469af764caa2c02f2c651409c6930c767 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 7 May 2018 15:57:01 +0200 Subject: ARM: dts: r8a7790: Add PMU device nodes 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 Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 0a42654..ae97ec1 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -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"; -- cgit v1.1