On Wed, Sep 8, 2010 at 6:39 AM, Tasslehoff Kjappfot <tasskjapp@xxxxxxxxx> wrote: > > > Hi list :-) > > I had trouble getting a standard 800x600@60Hz VGA signal to display > correctly on my monitors. Measuring the output showed that the front and > back porches were swapped both for hsync and vsync. After reading the source > I think I found the error in drivers/video/omap2/omapfb/omapfb-main.c. Patch > attached. > > http://www.xfree86.org/3.3.6/fbdev6.html shows the way it should be, but > todays code sets: > > hfp = left margin > hbp = right margin > vfp = upper margin > vbp = lower margin > > I tested a patched kernel with 800x600@60Hz on two different monitors and a > vga grabber, and it solved my issues. This looks good. Before this came up, I also thought that front porch meant left margin, and back porch meant margin, but margins are named in relation to pixel data, and porches are named in relation to sync pulses. You might want to add a Signed-off-by line Reviewed-by: Russ.Dill@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
