On 21:35 Mon 07 Jan , Arnd Bergmann wrote: > (Adding Sascha Hauer, Linus Walleij, Lee Jones to Cc) > > On Monday 07 January 2013, Tony Lindgren wrote: > > > > > > At the end of the line, some kind of hardware glue is going to be needed. > > > > > > I just feel that drawing from a sample size of 1 (maybe 2 if I get to throw > > > in the beagleboard), it is a bit premature to think about making it overly > > > general, besides the part that are obviously part of the infrastructure > > > (like the DT overlay stuff). > > > > > > What I'm getting at, is that we need some user experience about this, before > > > going away and creating structure out of possible misconception about the uses. > > > > IMHO stuff like this will be needed by many SoCs. Some examples of similar > > things for omaps that have eventually become generic frameworks have been > > the clock framework, USB OTG support, runtime PM, pinmux framework and > > so on. > > > > So I suggest a minimal generic API from the start as that will make things > > a lot easier in the long run. > > I agree. The ux500 platform already has the concept of "user interface boards", > which currently is not well integrated into devicetree. I believe Sascha > mentioned that Pengutronix had been shipping some other systems with add-on > boards and generating device tree binaries from source for each combination. > > Ideally, both of the above should be able to use the same DT overlay logic > as BeagleBone, and I'm sure there are more of those. I'm looking for this also as on at91 sama9x5ek and sam9cn12ek and the sama5d3xek, we have 1 wire eeproms to detect the boards (motherboards and daugther boards) where we have 1 1-wire per board and cpu boards so we can detect everything and have it's revision and more information we already have barebox that detect the 1-wire but we need the same handling in the kernel Best Regards, J. > > Arnd > _______________________________________________ > devicetree-discuss mailing list > devicetree-discuss@xxxxxxxxxxxxxxxx > https://lists.ozlabs.org/listinfo/devicetree-discuss -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
