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| author | Raphael Assenat <raph@8d.com> | 2006-10-03 10:15:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-03 17:04:12 +0200 |
| commit | 8bc218410d6c2b22a7581fac6f3dc2ac1f8fc99f (patch) | |
| tree | e4b0ef3693052742df0233ab9c3a706382307ee3 /drivers/video/controlfb.c | |
| parent | [PATCH] atyfb: Possible cleanups (diff) | |
| download | linux-8bc218410d6c2b22a7581fac6f3dc2ac1f8fc99f.tar.xz linux-8bc218410d6c2b22a7581fac6f3dc2ac1f8fc99f.zip | |
[PATCH] mbxfb: Fix a chip bug? resulting in wrong pixclock
This is a workaround for what I think is a bug in the 2700G chip.
The PLL output frequency is adustable using 3 values (M, N and P. See code
for formula). The N value range is documented to be 1 to 7 but when it is set
to 1, the output frequency is lower than it should be (divided by 2), giving
unexpected results such as no sync on a CRT display.
This patch prevents N=1 when searching for the best value for the requested
pixclock.
Signed-off-by: Raphael Assenat <raph@8d.com>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/controlfb.c')
0 files changed, 0 insertions, 0 deletions