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4e96c97742
This is a first of series patches that optimize DP link training. The first patch is for eDP only where we reuse the previously trained link training values from cache i.e. voltage swing and pre-emphasis levels. In case we are not able to train the link by reusing the known values, the link training parameters are set to zero and training is restarted. V2: - flag that indicates if DP link is trained and valid renamed from 'link_trained' to 'train_set_valid' - removed routine 'intel_dp_reuse_link_train' V3: - rebased against the latest drm-intel-nightly V4: - removed HPD long pulse handling for eDP case to clear the flag that indicates to reuse the current link training parameters. (based on Sivakumar's comment) Signed-off-by: Mika Kahola <mika.kahola@intel.com> Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> [danvet: s/DP/eDP/ in subject to make scope clear.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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