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Subject[PATCH v2 2/2] arm64: dts: rockchip: support the pmu node for rk3399
Date
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@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
CC: linux-arm-kernel@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@ff110000 {
--
1.9.1
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