Messages in this thread |  | | From | (Krzysztof Hałasa) | | Subject | Re: [PATCH] i.MX6 PCIe: Fix imx6_pcie_deassert_core_reset() polarity | | Date | Mon, 04 Apr 2016 12:37:07 +0200 |
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Tim,
> So perhaps there is something else going on with the tw8689 > device/driver that is causing it to not work with MSI. We have an > avc8000 miniPCIe with tw8689 here and can test if you send me your > patches that enable tw8689 with msi.
I think you can use this: http://git.linuxtv.org/hverkuil/media_tree.git/log/?h=tw686x
> Regardless of MSI working in our tests we still disable it because of > it breaking legacy irqs and for performance reasons.
So do I. However I'm also using Fedora 23 and this means I have to recompile the kernel, since they build it with MSI enabled. I think we should fix it, either by disabling in run time, or making it work.
Performance-wise, I found it "surprising" that one can't have multiple MSIs with separate hw vector for each. -- Krzysztof Halasa
Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland
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