Add the Performance Monitoring Unit (PMU) device tree node to the H3
.dtsi, which tells DT users which interrupts are triggered by PMU
overflow events on each core. The numbers come from the manual and have
been checked in U-Boot and with perf in Linux.
Tested with perf record and taskset on an OrangePi Zero.
Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
---
arch/arm/boot/dts/sun8i-h3.dtsi | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
index fe773c72a69b..b4f1673df9ee 100644
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -80,7 +80,7 @@
#cooling-cells = <2>;
};
- cpu@1 {
+ cpu1: cpu@1 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <1>;
@@ -90,7 +90,7 @@
#cooling-cells = <2>;
};
- cpu@2 {
+ cpu2: cpu@2 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <2>;
@@ -100,7 +100,7 @@
#cooling-cells = <2>;
};
- cpu@3 {
+ cpu3: cpu@3 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <3>;
@@ -111,6 +111,15 @@
};
};
+ pmu {
+ compatible = "arm,cortex-a7-pmu";
+ interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
+ };
+
timer {
compatible = "arm,armv7-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
--
2.14.5
