On Friday, September 2, 2016 12:55:33 PM CEST Robin Murphy wrote: > > Huh? There's only no DMA description in DT if the device can be assumed > to be happy with the defaults. Anything else should be using > "dma-ranges", "dma-coherent", etc. to describe non-default integration > aspects. For devices with an inherent fixed addressing capability !=32 > bits, then it's down to the driver to call dma_set_mask() appropriately > to override the default 32-bit mask (which is not unique to OF-probed > devices either). The iommu configuration would be the main other one worth mentioning. Note that there is a known bug with dma_set_mask(), which always succeeds at the moment, even if the dma-ranges limit the possible addresses in a way that should fail. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
