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Date: Fri, 28 Aug 2015 10:15:49 +0300
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Subject: GIC - interrupts interpretation in DTS/FDT
From: Mihai Carabas <mihai.carabas@gmail.com>
To: freebsd-arm@freebsd.org
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Hi everyone,

In the sys/arm/arm/gic.c there is a comment: "The hardware only supports
active-high-level or rising-edge". From where is this deducted?

I'm looking in the TRM for Cortex-A15 and there are some interrupts
active-low-level. E.g.: "Virtual Timer event (PPI4) This is the event
generated from the virtual timer and uses ID27. The interrupt is active-LOW
level-sensitive."

Thanks,
Mihai