From: Andre Przywara andre.przywara@arm.com
[ Upstream commit 0388a110747bec0c9d9de995842bb2a03a26aae1 ]
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@arm.com Signed-off-by: Maxime Ripard maxime@cerno.tech Signed-off-by: Sasha Levin sashal@kernel.org --- 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 f4ba088b225ed..08d65f252e172 100644 --- a/arch/arm/boot/dts/sun8i-h3.dtsi +++ b/arch/arm/boot/dts/sun8i-h3.dtsi @@ -60,25 +60,34 @@ reg = <0>; };
- cpu@1 { + cpu1: cpu@1 { compatible = "arm,cortex-a7"; device_type = "cpu"; reg = <1>; };
- cpu@2 { + cpu2: cpu@2 { compatible = "arm,cortex-a7"; device_type = "cpu"; reg = <2>; };
- cpu@3 { + cpu3: cpu@3 { compatible = "arm,cortex-a7"; device_type = "cpu"; reg = <3>; }; };
+ 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)>,