Re: [PATCH v2 2/2] arm64: dts: Fix broken architected timer interrupt trigger

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Arnd, Olof,

On 01/08/16 10:54, 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).
> 
> Acked-by: Duc Dang <dhdang@xxxxxxx>
> Acked-by: Carlo Caione <carlo@xxxxxxxxxxxx>
> Acked-by: Michal Simek <michal.simek@xxxxxxxxxx>
> Acked-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> Acked-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>

Any update on this patch? We have a workaround merged already, but it'd
be good to have the DTS fixed as well.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux SoC Development]     [Linux Rockchip Development]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Linux SCSI]     [Yosemite News]

  Powered by Linux