Re: [PATCH 2/2] ARM: tegra: paz00: Add LVDS support to device tree

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

On Thursday 26 December 2013 14:52:10 Marc Dietrich wrote:
> On Saturday 21 December 2013 23:11:58 Marc Dietrich wrote:
> > Sorry, Stephen, I mistyped your email address in the first post.
> > 
> > On Saturday 21 December 2013 21:38:13 Marc Dietrich wrote:
> > > Add backlight and panel nodes for the PAZ00 TFT LCD panel.
> > > 
> > > Signed-off-by: Marc Dietrich <marvin24-Mmb7MZpHnFY@public.gmane.org>
> > > ---
> > > This should enable everything needed. Unfortunately, in my tests it only
> > > switches on the backlight, but the display controller blocks in some
> > > infinit loop, so we get no output (and no working system). I post it
> > > here
> > > in case I missed something obvious...
> 
> Some users reported that it works when using uboot (yeah, shame on me that I
> still use fastboot on my dev machine), so I did a bit more research. It
> indeed works when using uboot, even when the display setup is disabled
> there. So my guess is that maybe some clock isn't setup by fastboot which
> is done by uboot.

ok, to bring this self-conversation to an end, the cpu blocks at a memory 
barrier right after 
	value = tegra_dc_readl(rgb->dc, DC_CMD_DISPLAY_COMMAND);
in tegra_output_rgb_disable (rgb.c).