Subject: [GIT PULL 1/2] SOCFPGA updates for 3.18

From: [email-masked] (Pavel Machek)
Date: Wed, 10 Sep 2014 13:00:57 +0200

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
-- 
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