This patch add to enable the ARM Performance Monitor Units for rk3399. ARM cores often have a PMU for counting cpu and cache events like cache misses and hits. Also, as the Marc posted the patches [0] to support Partitioning per-cpu interrupts. Let's add this patch to match it on rk3399 SoCs. [0]: https://lkml.org/lkml/2016/4/11/182 https://patchwork.kernel.org/patch/9209369/ Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx> Cc: Heiko Stuebner <heiko@xxxxxxxxx> Cc: Marc Zyngier <marc.zyngier@xxxxxxx> CC: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx --- Changes in v2: - AS Mark comments on https://patchwork.kernel.org/patch/9209369/ remove the interrupt-affinity property, we need depend on Marc' perf code on https://patchwork.kernel.org/patch/9209369/. arch/arm64/boot/dts/rockchip/rk3399.dtsi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index 8f0a069..4bcd02b 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -165,6 +165,16 @@ <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>; }; + pmu_a53 { + compatible = "arm,cortex-a53-pmu"; + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW &part0>; + }; + + pmu_a72 { + compatible = "arm,cortex-a72-pmu"; + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW &part1>; + }; + xin24m: xin24m { compatible = "fixed-clock"; clock-frequency = <24000000>; @@ -296,6 +306,16 @@ msi-controller; reg = <0x0 0xfee20000 0x0 0x20000>; }; + + ppi-partitions { + part0: interrupt-partition-0 { + affinity = <&cpu_l0 &cpu_l1 &cpu_l2 &cpu_l3>; + }; + + part1: interrupt-partition-1 { + affinity = <&cpu_b0 &cpu_b1>; + }; + }; }; i2c1: i2c@ff110000 { -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
