From: Raphael Assenat <raph@8d.com>
Date: Tue, 3 Oct 2006 08:15:03 +0000 (-0700)
Subject: [PATCH] mbxfb: Fix a chip bug? resulting in wrong pixclock
X-Git-Tag: v2.6.19-rc1~292
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8bc218410d6c2b22a7581fac6f3dc2ac1f8fc99f;p=pandora-kernel.git

[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>
---

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