On 06/05/2015 06:34 PM, Peter Ujfalusi wrote: > Hi, > > The ti-dma-crossbar driver in it's current form can work when it is used with > sDMA (omap-dma). On DRA7x class of devices we have both sDMA and eDMA > available. > The DT bindings for sDMA has been done in a way that DMA users need to specify > the required DMA request number + 1 when they request for channel and the > driver > stack has been written in this way also for sDMA. > Since right now we do not have the crossbar enabled we can still change the > compatible string to reflect the crossbar use. The TRM also refers the > crossbars > in this way.
Now that I have sent this series... Would it be better to not touch the compatible strings, but add of_device_id table in the ti-dma-crossbar driver containing the supported dma controllers, like "ti,omap4430-sdma" and "ti,edma3" and to of_match_node() against the node we got via dma-masters? So we would keep the ti,dra7-dma-crossbar and depending on where the dma-masters point us we can decide in the code on how to handle? Just a thought. > > Regards, > Peter > --- > Misael Lopez Cruz (2): > dmaengine: ti-dma-crossbar: Make idr xbar instance-specific > dmaengine: ti-dma-crossbar: Add support for eDMA xbar > > Peter Ujfalusi (1): > dmaengine: ti-dma-crossbar: Change the compatible string to > ti,dra7-sdma-crossbar > > Documentation/devicetree/bindings/dma/dma.txt | 2 +- > .../devicetree/bindings/dma/ti-dma-crossbar.txt | 5 +-- > drivers/dma/ti-dma-crossbar.c | 37 > ++++++++++++++++------ > 3 files changed, 31 insertions(+), 13 deletions(-) > -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
