| commit | 5a2376d1360bfc9ebf3b554dd8db1922d42cee4b | |
| author | Jani Nikula <jani.nikula@intel.com> | |
| Fri, 14 Aug 2015 07:53:17 +0000 (14 10:53 +0300) | ||
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | |
| Fri, 14 Aug 2015 15:50:43 +0000 (14 17:50 +0200) | ||
| tree | 538fb3e9a38bb7b4043dc6f635d92d9936a09f8a | treesnapshot (tar.gz zip) |
| parent | f79b468eca20dae31b6fcaaa738a7f99b764837d | commitdiff |
drm/i915/skl: WaIgnoreDDIAStrap is forever, always init DDI A
There is currently conflicting documentation on which steppings the
workaround is needed, up to C vs. forever. However there is post-C
stepping hardware that doesn't report port presence on DDI A, leading to
black screen on eDP. Assume the strap isn't connected, and try to enable
DDI A on these machines. (We'll still check the VBT for the info in DDI
init.)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There is currently conflicting documentation on which steppings the
workaround is needed, up to C vs. forever. However there is post-C
stepping hardware that doesn't report port presence on DDI A, leading to
black screen on eDP. Assume the strap isn't connected, and try to enable
DDI A on these machines. (We'll still check the VBT for the info in DDI
init.)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| drivers/gpu/drm/i915/intel_display.c | diffblobblamehistory |