Re: [PATCH 1/5] arm/dt: tegra: Remove /memreserve/ from device-treefiles

[Marc Dietrich <marvin24-Mmb7MZpHnFY@public.gmane.org>]

On Tuesday 22 November 2011 08:25:03 Stephen Warren wrote:
> Marc Dietrich wrote at Tuesday, November 22, 2011 3:42 AM:
> > On Monday 21 November 2011 14:44:07 Stephen Warren wrote:
> > > There are no drivers in the kernel at present which can make use of
> > > the
> > > memory reserved by /memreserve/, so there is no point reserving it.
> > > Remove /memreserve/ to allow the user more memory. It's also
> > > unclear whether any future driver would actually require
> > > /memreserve/, or allocate memory through some other mechanism.
> > 
> > while this gives 512 MB of usable memory on my AC100, it causes some
> > funny pictures on the screen ;-) I guess our bootloader (fastboot)
> > already setups the frambuffer there (and enables the backlight). I
> > guess it shouldn't be harmful as nothing else writes to this memory
> > area. Otherwise you may add that the bootloader (or the kernel cmdline
> > supplied by the bootloader) is now responsible for the reservation to
> > the description.
> 
> Ah yes, I guess that would happen. I'm only testing with mainline U-Boot...
> 
> I'd suggest this is acceptable fallout for now; I don't believe it will
> cause any active problems, and as you say, you can get the bootloader to
> set a command-line that excludes the frame-buffer if you want to solve
> this. Do you agree?

Ok. Hopefully we can also use u-Boot soon.

Marc