From: Charlene Liu <charlene.liu@amd.com>
Date: Mon, 30 Jul 2018 21:59:20 +0000 (-0400)
Subject: drm/amd/display: fix single link DVI has no display
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=321f65a62359e1490c7d9910b8557174ce779df4;p=openwrt%2Fstaging%2Fblogic.git

drm/amd/display: fix single link DVI has no display

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index a38e7ad36a7e..326b3e99b7e4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1812,6 +1812,8 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
 	bool is_vga_mode = (stream->timing.h_addressable == 640)
 			&& (stream->timing.v_addressable == 480);
 
+	if (stream->phy_pix_clk == 0)
+		stream->phy_pix_clk = stream->timing.pix_clk_khz;
 	if (stream->phy_pix_clk > 340000)
 		is_over_340mhz = true;