[PATCH v3 2/2] arm64: dts: Fix broken architected timer interrupt trigger
carlo at caione.org
Thu Jun 9 08:23:47 PDT 2016
On 06/06/16 18:56, Marc Zyngier wrote:
> The ARM architected timer specification mandates that the interrupt
> associated with each timer is level triggered (which corresponds to
> the "counter >= comparator" condition).
> A number of DTs are being remarkably creative, declaring the interrupt
> to be edge triggered. A quick look at the TRM for the corresponding ARM
> CPUs clearly shows that this is wrong, and I've corrected those.
> For non-ARM designs (and in the absence of a publicly available TRM),
> I've made them active low as well, which can't be completely wrong
> as the GIC cannot disinguish between level low and level high.
> The respective maintainers are of course welcome to prove me wrong.
> While I was at it, I took the liberty to fix a couple of related issue,
> such as some spurious affinity bits on ThunderX, and their complete
> absence on ls1043a (both of which seem to be related to copy-pasting
> from other DTs).
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
Acked-by: Carlo Caione <carlo at endlessm.com>
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