https://bugs.freedesktop.org/show_bug.cgi?id=71796
--- Comment #8 from Alexandre Demers alexandre.f.demers@gmail.com --- You may have a look at bug 69775. It was reported as fixed by this patch: [PATCH] drm/radeon: fix typo in fetching mpll params http://lists.freedesktop.org/archives/dri-devel/2013-November/049425.html
The patch has not been merged yet, but should be soon.