[PATCH] ep93xx: add framebuffer support to edb93xx boards

On Fri, Jan 7, 2011 at 11:38 PM, H Hartley Sweeten
[off-list ref] wrote:

The ep9307, ep9312, and ep9315 variants of the ep93xx processor include the
raster engine needed for framebuffer support.

This allows the EDB93xx boards with those processors to use the framebuffer
driver.

Tested on an EDB9307A with the following kernel parameters:
? ? ? ?video=640x480-16 at 60
? ? ? ?video=1024x768-16 at 60

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>

The code looks good, but there are hardware bugs in the EP93XX that
make the screen image jump a few pixels to the right once every few
seconds.  We found that 800x600-16 and 1024x768-8 were the highest
modes that are stable.
Did you find 1024x768-16 to be stable, say when running X and moving a
window? The effect was most visible on a phosphor CRT, less noticeable
on an LCD.

    M