The patch titled
cyber2000fb: avoid palette corruption at higher clocks
has been added to the -mm tree. Its filename is
cyber2000fb-avoid-palette-corruption-at-higher-clocks.patch
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------------------------------------------------------
Subject: cyber2000fb: avoid palette corruption at higher clocks
From: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
When 1280x1024@75Hz mode is set, console palette is not set properly -
sometimes the background is white, sometimes yellow and text colors are
also messed up. This does not happen at 1280x1024@60Hz and below.
It seems that the HW needs some time before setting the palette - maybe
the PLL needs more time to lock at higher speeds. This patch fixes the
problem but without knowing what register to check for PLL lock(?), the
delay might be excessive.
Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/cyber2000fb.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN drivers/video/cyber2000fb.c~cyber2000fb-avoid-palette-corruption-at-higher-clocks drivers/video/cyber2000fb.c
--- a/drivers/video/cyber2000fb.c~cyber2000fb-avoid-palette-corruption-at-higher-clocks
+++ a/drivers/video/cyber2000fb.c
@@ -502,6 +502,9 @@ static void cyber2000fb_set_timing(struc
cyber2000_grphw(0xb9, 0x80, cfb);
cyber2000_grphw(0xb9, 0x00, cfb);
+ /* wait (for the PLL?) to avoid palette corruption at higher clocks */
+ msleep(1000);
+
cfb->ramdac_ctrl = hw->ramdac;
cyber2000fb_write_ramdac_ctrl(cfb);
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxxxx are
cyber2000fb-avoid-palette-corruption-at-higher-clocks.patch
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