On Wed, 2013-10-23 at 19:45 +0200, Richard Cochran wrote: > > Once I design my board, and it goes into production, the hardware is > fixed. It doesn't change, and neither should the description of the > hardware, also known as the DTB. If I have to research all of the > ways SOC support are never completely finished; subsystems are getting new features. It's possible to ship a product with a kernel version that does not handle all the chip goodies, then want to upgrade the kernel later when someone has written the driver for a previously unused hardware block. the first iteration of your DTB would be incomplete, the bindings to describe that hardware block would not exist inside it. real life example with Marvell Kirkwood, hw crypto support was added 1 year after initial SOC support. I'm happy I can use it now on existing boards by "just" upgrading the kernel. -- Maxime -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
