ARM: tegra: Add Tegra124 PMU support

This patch modifies the device tree for Tegra124 based devices to enable
the Cortex A15 PMU. The interrupt numbers are taken from NVIDIA Tegra K1
TRM (DP-06905-001_v03p). This patch was tested on a Jetson TK1.

Signed-off-by: Kyle Huey <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Acked-by: Jon Hunter <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: khuey

arch/arm/boot/dts/tegra124.dtsi

@@ -980,6 +980,18 @@
 		};
 	};
 
+	pmu {
+		compatible = "arm,cortex-a15-pmu";
+		interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&{/cpus/cpu@0}>,
+				     <&{/cpus/cpu@1}>,
+				     <&{/cpus/cpu@2}>,
+				     <&{/cpus/cpu@3}>;
+	};
+
 	thermal-zones {
 		cpu {
 			polling-delay-passive = <1000>;