[Bug 103997] [CNL] eDP + HDMI sometimes Hard Hang machine
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Dec 1 02:19:54 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=103997
James Ausmus <james.ausmus at intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from James Ausmus <james.ausmus at intel.com> ---
Issue was that we were not masking out the previous value for the PLL to DDI
mapping before OR'ing in the new value. Thus, with HDMI/DP previously being
mapped to DPLL1, when we tried to map it to DPLL0, the register continnued to
contain the mapping to DPLL1, which was disabled.
Patch is at https://patchwork.freedesktop.org/series/34726/
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