On Tue, Jul 05, 2016 at 10:26:45AM +0200, Maxime Ripard wrote: > The device tree overlays are a good way to deal with user-modifyable > boards or boards with some kind of an expansion mechanism where we can > easily plug new board in (like the BBB or the raspberry pi). > > However, so far, the usual mechanism to deal with it was to have in Linux > some driver detecting the expansion boards plugged in and then request > these overlays using the firmware interface. > > That works in most cases, but in some cases, you might want to have the > overlays applied before the userspace comes in. Either because the new > board requires some kind of an early initialization, or because your root > filesystem is accessed through that expansion board. > > The easiest solution in such a case is to simply have the component before > Linux applying that overlay, removing all these drawbacks. > > Reviewed-by: Stefan Agner <stefan@xxxxxxxx> > Acked-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx> > Acked-by: Simon Glass <sjg@xxxxxxxxxxxx> > Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> Applied to u-boot/master, thanks! -- Tom
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