[PATCH] Revert "drm/radeon: fix DP link training issue with second 4K monitor"

[Deucher, Alexander]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Michel Dänzer
> Sent: Monday, October 24, 2016 3:52 AM
> To: amd-gfx at lists.freedesktop.org
> Cc: Nath, Arindam
> Subject: [PATCH] Revert "drm/radeon: fix DP link training issue with second
> 4K monitor"
> 
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> This reverts commit 1a738347df2ee4977459a8776fe2c62196bdcb1b.
> 
> 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 at vger.kernel.org
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/radeon/radeon_dp_auxch.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/radeon/radeon_dp_auxch.c
> b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
> index db64e00..3b0c229 100644
> --- a/drivers/gpu/drm/radeon/radeon_dp_auxch.c
> +++ b/drivers/gpu/drm/radeon/radeon_dp_auxch.c
> @@ -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);
> 
> --
> 2.10.1
> 
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx