Re: [PATCH 07/11] dts: arm64: layerscape: add dma-ranges property to qoric-mc node

From: Nicolas Saenz Julienne
Date: Mon Oct 14 2019 - 06:00:32 EST

On Mon, 2019-10-14 at 16:28 +0800, Shawn Guo wrote:
> On Tue, Sep 24, 2019 at 08:12:38PM +0200, Nicolas Saenz Julienne wrote:
> > qoriq-mc's dpmacs DMA configuration is inherited from their parent node,
> > which acts a bus in this regard. So far it maked all devices as
> > dma-coherent but no dma-ranges recommendation is made.
> >
> > The truth is that the underlying interconnect has DMA constraints, so
> > add an empty dma-ranges in qoriq-mc's node in order for DT's DMA
> > configuration code to get the DMA constraints from it.
> >
> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
> Updated subject prefix as 'arm64: dts: ...', and applied the patch.

Hi Shawn,
these two patches are no longer needed. This series has been superseded by this
patch[1] 951d48855d ('of: Make of_dma_get_range() work on bus nodes', available
in linux-next) which fixed the issue directly in OF code.

Sorry for the noise.



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