Re: [PATCH 1/2] dt-bindings: dma: ti: k3-udma: Update for atype support (virtualization)

From: Rob Herring
Date: Wed Feb 26 2020 - 10:21:27 EST


On Tue, 18 Feb 2020 16:31:25 +0200, Peter Ujfalusi wrote:
> In UDMA each channel can use different ATYPE value which tells UDMA how
> the addresses in the descriptors should be treated:
> 0: pointers are physical addresses (no translation)
> 1: pointers are intermediate addresses (PVU)
> 2: pointers are virtual addresses (SMMU)
>
> When virtualized environment is used then the dma binding should use
> additional cell to configure the desired ATYPE for the channel.
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> ---
> .../devicetree/bindings/dma/ti/k3-udma.yaml | 19 ++++++++++++++++++-
> 1 file changed, 18 insertions(+), 1 deletion(-)
>

Reviewed-by: Rob Herring <robh@xxxxxxxxxx>