On Saturday, August 27, 2016 12:56:10 PM CEST Florian Fainelli wrote: > > Finally, Arnd's suggestions of using "dma-ranges" is fine, but I do not > think we quite need this here because we really need to advertise the > right set of capabilities based on the generation/version of the > controller deployed in specific chips. To be more specific here, I think that without the dma-ranges property you should never be able to set a dma-mask larger than the 32-bit mask, so if you have machines that are capable of high DMA, you should definitely add the property in the bus, even if that is currently ignored. I've suggested a patch before, but I believe both ARM and MIPS ignore this at the moment, and just allow drivers to set arbitrary masks even when the bus does not have a dma-ranges property, and that is a bug. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
