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video: fbdev: pmag-ba-fb: Fix the lower margin size 

According to the board specification[1] the width of the vertical sync
front porch is 12 pixels or the same as the width of the horizontal sync
front porch.  This in turn means the size of the lower margin is 0,
because the vertical sync starts as soon as the start of the horizontal
sync terminates the last line.

References:

[1] "PMAG-BA TURBOchannel Color Frame Buffer Functional Specification",
    Revision 1.2, Workstation Systems Engineering, Digital Equipment
    Corporation, August 27, 1990, Table 3-5: "Video Timing"

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Maciej W. Rozycki 2016-02-22 01:54:46 +00:00 committed by Tomi Valkeinen
parent 8b4c78a35a
commit af22f647b4
1 changed files with 1 additions and 1 deletions
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2
drivers/video/fbdev/pmag-ba-fb.c
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@ -60,7 +60,7 @@ static struct fb_var_screeninfo pmagbafb_defined = {
.left_margin = 116,
.right_margin = 12,
.upper_margin = 34,
.lower_margin = 12,
.lower_margin = 0,
.hsync_len = 128,
.vsync_len = 3,
.sync = FB_SYNC_ON_GREEN,