On Fri, Jul 01, 2016 at 03:36:10PM +0800, Caesar Wang wrote:
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
The core IRQ support is merged, but it's worth noting that the perf code
doesn't use it yet. So we still need a patch adding support to the perf
code before we can change the dts.
I think Marc had a prototype of that somewhere.
Marc?
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
CC: linux-arm-kernel@lists.infradead.org
---
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 8f0a069..b260f62 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -165,6 +165,22 @@
<GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
};
+ pmu_a53 {
+ compatible = "arm,cortex-a53-pmu";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW &part0>;
+ interrupt-affinity = <&cpu_l0>,
+ <&cpu_l1>,
+ <&cpu_l2>,
+ <&cpu_l3>;
+ };
I'm not keen on having to redundantly describe the affinity in
interrupt-affinity and the partition's affinity property. Those will
almost certainly be out-of-sync in some DTs, and it'll be very painful
to deal with.
I think that for partitioned PPIs the PMU driver should use the affinity
from the PPI, and not have an interrupt-affinity property. Hopefully
that's relatively simple to handle.