With IOMMU enabled, if SDPIF_MMIO_CNTRL_0 is not set
appropriately the system hangs without any trace
during S3.
To ease debug and to ensure that the failure, if any,
was caused by a race conditions that disabled write access to
SDPIF_MMIO_CNTRL_0 register, warn the user about it.
Signed-off-by:
On Mon, Sep 14, 2020 at 12:55 AM Shirish S wrote:
>
> With IOMMU enabled, if SDPIF_MMIO_CNTRL_0 is not set
> appropriately the system hangs without any trace
> during S3.
>
> To ease debug and to ensure that the failure, if any,
> was caused by a race conditions that disabled write access to
> SDP