Dne torek, 03. januar 2023 ob 02:09:00 CET je Samuel Holland napisal(a):
> Currently, the IOMMU driver leaves the bypass register at its default
> value. The H6 variant of the hardware disables bypass by default. So
> once the first device is attached to the IOMMU, translation is enabled
> for all masters, even those not attached to an IOMMU group/domain.
>
> On the other hand, the D1 hardware variant enables bypass by default, so
> keeping the default value prevents the IOMMU from functioning entirely.
>
> Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver")
> Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
Reviewed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
Best regards,
Jernej
