On Mon, Oct 14, 2019 at 12:00:25PM +0200, Nicolas Saenz Julienne wrote: > 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 This series has been superseded by this 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. Okay, thanks for letting me know. Dropped them. Shawn