Re: [PATCH v4 04/24] dt-bindings: memory: mediatek: Add domain definition

[Rob Herring]

On Wed, 11 Nov 2020 20:38:18 +0800, Yong Wu wrote:
> In the latest SoC, there are several HW IP require a sepecial iova
> range, mainly CCU and VPU has this requirement. Take CCU as a example,
> CCU require its iova locate in the range(0x4000_0000 ~ 0x43ff_ffff).
> 
> In this patch we add a domain definition for the special port. In the
> example of CCU, If we preassign CCU port in domain1, then iommu driver
> will prepare a independent iommu domain of the special iova range for it,
> then the iova got from dma_alloc_attrs(ccu-dev) will locate in its special
> range.
> 
> This is a preparing patch for multi-domain support.
> 
> Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
> ---
>  include/dt-bindings/memory/mtk-smi-larb-port.h | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 

Acked-by: Rob Herring <robh@xxxxxxxxxx>