drm/i915: set CDCLK if DPLL0 enabled during resuming from S3

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Since BIOS RC 1.4 it would enable CDCLK PLL during BIOS S3 resume, then
driver needs to set CDCLK to avoid display corruption if DPLL0 enabled.

References: https://bugs.freedesktop.org/show_bug.cgi?id=91697
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Cooper Chiou <cooper.chiou@intel.com>
Reviewed-by: Wei Shun Chang <wei.shun.chang@intel.com>
Tested-by: Gary Wang <gary.c.wang@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gavin Hindman <gavin.hindman@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Xiong Y Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Gary Wang <gary.c.wang@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

...

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Gary Wang 2015-08-28 16:40:34 +08:00 • committed by Jani Nikula

parent 26951caf55

commit 39d9b85a4d

1 changed files with 5 additions and 8 deletions

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drivers/gpu/drm/i915/intel_display.c

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