Re: [PATCHv9 00/12] PCI: Recode Mobiveil driver and add PCIe Gen4 driver for NXP Layerscape SoCs

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On Mon, Feb 10, 2020 at 9:32 AM Olof Johansson <olof@xxxxxxxxx> wrote:
>
> On Mon, Feb 10, 2020 at 4:23 PM Russell King - ARM Linux admin
> <linux@xxxxxxxxxxxxxxx> wrote:
> >
> > On Mon, Feb 10, 2020 at 04:12:30PM +0100, Olof Johansson wrote:
> > > On Thu, Feb 6, 2020 at 11:57 AM Z.q. Hou <zhiqiang.hou@xxxxxxx> wrote:
> > > >
> > > > Hi Olof,
> > > >
> > > > Thanks a lot for your comments!
> > > > And sorry for my delay respond!
> > >
> > > Actually, they apply with only minor conflicts on top of current -next.
> > >
> > > Bjorn, any chance we can get you to pick these up pretty soon? They
> > > enable full use of a promising ARM developer system, the SolidRun
> > > HoneyComb, and would be quite valuable for me and others to be able to
> > > use with mainline or -next without any additional patches applied --
> > > which this patchset achieves.
> > >
> > > I know there are pending revisions based on feedback. I'll leave it up
> > > to you and others to determine if that can be done with incremental
> > > patches on top, or if it should be fixed before the initial patchset
> > > is applied. But all in all, it's holding up adaption by me and surely
> > > others of a very interesting platform -- I'm looking to replace my
> > > aging MacchiatoBin with one of these and would need PCIe/NVMe to work
> > > before I do.
> >
> > If you're going to be using NVMe, make sure you use a power-fail safe
> > version; I've already had one instance where ext4 failed to mount
> > because of a corrupted journal using an XPG SX8200 after the Honeycomb
> > Serror'd, and then I powered it down after a few hours before later
> > booting it back up.
> >
> > EXT4-fs (nvme0n1p2): INFO: recovery required on readonly filesystem
> > EXT4-fs (nvme0n1p2): write access will be enabled during recovery
> > JBD2: journal transaction 80849 on nvme0n1p2-8 is corrupt.
> > EXT4-fs (nvme0n1p2): error loading journal
>
> Hmm, using btrfs on mine, not sure if the exposure is similar or not.
>
> Do you know if the SErr was due to a known issue and/or if it's
> something that's fixed in production silicon?
>
> (I still can't enable SMMU since across a warm reboot it fails
> *completely*, with nothing coming up and working. NXP folks, you
> listening? :)

This is a known issue about DPAA2 MC bus not working well with SMMU
based IO mapping.  Adding Laurentiu to the chain who has been looking
into this issue.

Regards,
Leo



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