Hi Kurf On 9/27/2019 3:17 PM, Kurt Garloff wrote: > Hi Jörg, > > On 25/09/2019 17:42, Joerg Roedel wrote: >> On Wed, Sep 25, 2019 at 05:27:32PM +0200, Jiri >> Kosina wrote: >>> On Sat, 21 Sep 2019, Kurt Garloff wrote: >>>> [12916.740274] mmc0: sdhci: >>>> ============================================ >>>> [12916.740337] mmc0: error -5 whilst >>>> initialising MMC card >>> Do you have BAR memory allocation failures in >>> dmesg with IOMMU on? > > No. The device is *not* treated as PCI device and > I still think that this is the source of the evil. > >>> Actually, sharing both working and non-working >>> dmesg, as well as >>> /proc/iomem contents, would be helpful. >> Yes, can you please grab dmesg from a boot with >> iommu enabled and add >> 'amd_iommu_dump' to the kernel command line? >> That should give some hints >> on what is going on. > > For now I attach a dmesg and iomem from the boot > with IOMMU enabled. > Nothing much interesting without IOMMU, sdhci-acpi > there just works -- let me know if you still want > me to send the kernel msg. > > Thanks for looking into this! >
I have added Suravee from AMD in the mail loop. He works on IOMMU part. As per my understanding, it needs a patch in IOMMU driver for adding support of EMMC. Note that on Ryzen platform we have EMMC 5.0 as ACPI device. Thanks Nehal Shah
