[Gta04-owner] Make bootsplash survive after kernel load

[Dr. H. Nikolaus Schaller]

Am 23.04.2013 um 21:54 schrieb Paul Kocialkowski:

> I've been playing around with the GTA04 bootloaders and especially tried
> to get u-boot to display a boot splash before starting the kernel.
> 
> The problem seems that as soon as the kernel is loading, the screen
> fills up with random pixels while I would really like to see the boot
> splash survive up to the UI start (just like it is done on other phones
> that I know).
> 
> Any hind or lead that could help me achieve that?

There may be another issue where I don't know if it is still in the
3.7/8 kernels but it was that the 2.6.32 kernel re-initializes the DSS
subsystem including PLLs and clock dividers. So there was always
some flicker even if u-boot did not turn off the LCD for a moment and
the kernel reenables it. I think there was also a kernel config option
that is intended to modify the kernel code to simply use the already
initialized DSS but it did fail completely.

-- hns