[PATCH v3 2/2] arm64: dts: rockchip: support the pmu node for rk3399
Caesar Wang
wxt at rock-chips.com
Mon Sep 5 11:17:15 PDT 2016
This patch adds 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
Signed-off-by: Caesar Wang <wxt at rock-chips.com>
Acked-by: Mark Rutland <mark.rutland at arm.com>
Cc: Heiko Stuebner <heiko at sntech.de>
Cc: Marc Zyngier <marc.zyngier at arm.com>
CC: linux-arm-kernel at lists.infradead.org
---
Changes in v3:
- updated on next kernel(20160905).
- add the Mark's ACK for PATCH[2/2].
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 e9e22fe..4e65f3b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -166,6 +166,16 @@
<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>;
@@ -354,6 +364,16 @@
status = "disabled";
};
+ 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 {
compatible = "rockchip,rk3399-i2c";
reg = <0x0 0xff110000 0x0 0x1000>;
--
1.9.1
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