mirror of https://gitee.com/openkylin/linux.git
drm/radeon/kms: make displayport work by reorganising vsemph setup.
This fix reorganises the initial DP link training slightly, and actually makes DP work under kms here. Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -627,11 +627,12 @@ void dp_link_train(struct drm_encoder *encoder,
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/* set initial vs/emph */
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memset(train_set, 0, 4);
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dp_update_dpvs_emph(radeon_connector, encoder, train_set);
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udelay(400);
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/* set training pattern 1 on the sink */
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dp_set_training(radeon_connector, DP_TRAINING_PATTERN_1);
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dp_update_dpvs_emph(radeon_connector, encoder, train_set);
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/* clock recovery loop */
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clock_recovery = false;
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tries = 0;
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