Hi! > >> 2) On the host level, the support for handle multiple slots in DT for > >> dw-mmc has been broken. While dw-mmc parsed the DT nodes for slots, it > >> screwed up configurations. Thus the support for slots have never > >> worked as expected from DT point of view. > > > > Well, DT is supposed to describe the hardware. From your description, > > it seems that linux does not support two slots on one controller and > > DT parsing code basically ignores the slots. (Logical, if it can't > > support two slots). > > > > So now we are breaking DT description due to Linux limitations. Which > > > > a) makes it hard for any other os not having same limitation > > > > b) makes it hard for people to fix the limitation > > > > c) does not really solve anything > > Yes it does, the problem in 2) gets fixed. > > > > > d) breaks backward compatibility with old dts > > According to 2), it has never worked - so we don't break anything. Umm? u-SD worked for me in 3.14, 3.15 and 3.16 with the device tree, and with single-slot described in the device tree. Now I have to change dtb-s to keep working configuration, which is something device tree should never ever do. Is it so hard to just fix the multiple slot parsing? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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
