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Commit 9dc79965 authored by Michel Dänzer's avatar Michel Dänzer Committed by Alex Deucher
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Revert "drm/radeon: fix DP link training issue with second 4K monitor" 

This reverts commit 1a738347.

It caused at least some Kaveri laptops to incorrectly report DisplayPort
connectors as connected.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97857


Cc: stable@vger.kernel.org
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4560738a

drivers/gpu/drm/radeon/radeon_dp_auxch.c

+1 −1
Original line number Diff line number Diff line
@@ -105,7 +105,7 @@ radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg 


	tmp &= AUX_HPD_SEL(0x7);

	tmp |= AUX_HPD_SEL(chan->rec.hpd);

	tmp |= AUX_EN | AUX_LS_READ_EN | AUX_HPD_DISCON(0x1);

	tmp |= AUX_EN | AUX_LS_READ_EN;



	WREG32(AUX_CONTROL + aux_offset[instance], tmp);