From: Mikita Lipski <mikita.lipski@amd.com>
Date: Mon, 16 Jul 2018 09:17:55 -0400
Subject: drm/amd/display: Allow clock sharing b/w HDMI and DVI
Git-commit: fc69009e35b74e45ad71140e94355e999b8d24af
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

[why]
HDMI and DVI share the same PHY clock and single link
DVI and HDMI both use 4 lanes, so they should be allowed
to be sharing the same clock source if all other parameters
are satisfied.

[how]
Change a check for general DVI to Dual DVI.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -372,11 +372,11 @@ static bool is_sharable_clk_src(
 		return false;
 
 	if (dc_is_hdmi_signal(pipe_with_clk_src->stream->signal)
-			&& dc_is_dvi_signal(pipe->stream->signal))
+			&& dc_is_dual_link_signal(pipe->stream->signal))
 		return false;
 
 	if (dc_is_hdmi_signal(pipe->stream->signal)
-			&& dc_is_dvi_signal(pipe_with_clk_src->stream->signal))
+			&& dc_is_dual_link_signal(pipe_with_clk_src->stream->signal))
 		return false;
 
 	if (!resource_are_streams_timing_synchronizable(