drm/radeon/kms: force legacy pll algo for RV620 LVDS
authorAlex Deucher <alexdeucher@gmail.com>
Tue, 7 Sep 2010 15:42:45 +0000 (11:42 -0400)
committerDave Airlie <airlied@redhat.com>
Tue, 14 Sep 2010 10:56:06 +0000 (20:56 +1000)
commitf90087eea44ce5fad139f086bc9d89ca37b0edc2
treec8d74d2e8b567c7d4b6c575b37dbcac27046d816
parentb64c115eb22516ecd187c74ad6de3f1693f1dc7b
drm/radeon/kms: force legacy pll algo for RV620 LVDS

There has been periodic evidence that LVDS, on at least some
panels, prefers the dividers selected by the legacy pll algo.
This patch forces the use of the legacy pll algo on RV620
LVDS panels.  The old behavior (new pll algo) can be selected
by setting the new_pll module parameter to 1.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30029

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/radeon/atombios_crtc.c