On Sun, Jun 01, 2014 at 11:23:48AM +0200, Hans de Goede wrote: > Hi, > > >Neither seems to actually ever have been used with > >more than one slot. I doubt anyone building an exynos-based system > >will ever do a multi-slot solution, and it seems that the at91 driver > >doesn't actually handle more than one slot. > > > >I'm personally not that excited about complicating the bindings by > >opening up for this -- I would rather work towards removing the > >concept of slots if it's one of those things that are going to remain > >unused. We have actually been talking about reworking the dw_mmc > >binding to remove the slot concept (and simplify the driver by doing > >so). > > I'm fine with removing the slot subnode, I added it because of it being > brought up in the powerup sequence discussion. I explicitly asked there > if adding such a subnode level was seen as desirable but nobody > answered :| MMC bus support was removed back in 2007: | commit b855885e3b60cf6f9452848712a62517b94583eb | Author: Pierre Ossman <drzeus@xxxxxxxxx> | Date: Wed Jan 3 19:47:29 2007 +0100 | | mmc: deprecate mmc bus topology | | The classic MMC bus was defined as multi card bus | system, which is reflected in the design in the MMC | layer. | | When SD showed up, the bus topology was abandoned | and a star topology (one card per host) was mandated. | MMC version 4 has followed this, officially deprecating | the bus topology. | | As we do not have any known users of the bus | topology we can remove support for it. This will | simplify the code and rectify some incorrect | assumptions in the newer additions. | | Signed-off-by: Pierre Ossman <drzeus@xxxxxxxxx> I doubt we will ever need support for it. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- 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
