[PATCH v2 2/2] arm64: dts: rockchip: support the pmu node for rk3399
From: Caesar Wang <hidden>
Date: 2016-07-06 08:06:39
Also in:
linux-devicetree, linux-rockchip, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Marc Zyngier <redacted> CC: linux-arm-kernel at lists.infradead.org --- 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 at ff110000 {
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1.9.1