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Commit 5fbfce7f authored by Dave Airlie's avatar Dave Airlie
Browse files

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: default avatarDave Airlie <airlied@redhat.com>
parent 54d9cb47

drivers/gpu/drm/radeon/atombios_dp.c

+2 −1
Original line number Diff line number Diff line
@@ -627,11 +627,12 @@ void dp_link_train(struct drm_encoder *encoder, 


	/* set initial vs/emph */

	memset(train_set, 0, 4);

	dp_update_dpvs_emph(radeon_connector, encoder, train_set);

	udelay(400);

	/* set training pattern 1 on the sink */

	dp_set_training(radeon_connector, DP_TRAINING_PATTERN_1);



	dp_update_dpvs_emph(radeon_connector, encoder, train_set);



	/* clock recovery loop */

	clock_recovery = false;

	tries = 0;