[Xorg-driver-geode] display mode with 800x480 on geode-2.11.1

[wan michael]

it often blinks after booting, not only at boot time. whether using vesa kfb

would be better than geode kfb since geode lx kfb is very basic and not
feature rich.
android uses opengl-es, not xorg server. like cfbcopyarea.ko, cfbfillrect.ko
and so on,
are they related to kfb or drm? selecting these modules can improve display
even without
hardware acceleration?

2009/4/30 John Yoder <john.yoder at twny.net>

> Thanks Chris, that changes things a bit. This thread is off topic for
> this list as this list is for the geode xorg driver. Just an FYI, I
> didn't look which list the thread belongs.
>
> Looking at the Geode LX KFB, the table resides in lxfb_core.c
> (geode_modedb[]) The 800x480 does not reside within it, as expected.
> When you have the line calculated, put it as the first table entry as
> the KFB defaults to the first entry in the table. Also supported PLL
> frequencies are in lxfb_ops.c.
>
> One note on the Geode LX KFB. The driver is very basic. It does not
> support panel scaling, tv out, compression, and hardware acceleration is
> minimal at best. Just trying to give you a heads up that the KFB is not
> as feature rich as the xorg driver.
>
> John Yoder
>
> On Wed, 2009-04-29 at 16:12 -0400, Chris Ball wrote:
> > Hi,
> >
> >    > First, I assume then that you are not using the VGA port. Is this
> >    > a correct assumption?  Second, is Android even using Xorg and
> >    > hence the geode xorg driver?  Another way to put this, is this
> >    > happening only at boot time, when the Geode KFB is active and
> >    > goes away once it gets into Xorg. Or, I think is more likely, is
> >    > Android only using the Geode KFB not even touching Xorg?
> >
> > The latter's correct; Android uses the kernel FB directly, never X.
> >
> > - Chris.
>
>
>
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