1 files changed, 39 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4349-drm-amd-display-Use-SIGNAL_TYPE_NONE-in-disable_outp.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4349-drm-amd-display-Use-SIGNAL_TYPE_NONE-in-disable_outp.patch
new file mode 100644
index 00000000..6bb117e3
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4349-drm-amd-display-Use-SIGNAL_TYPE_NONE-in-disable_outp.patch
@@ -0,0 +1,39 @@
+From cd43ff2a1e13dbf27001284939bbe66f75cd5c73 Mon Sep 17 00:00:00 2001
+From: Sung Lee <sung.lee@amd.com>
+Date: Wed, 16 Oct 2019 10:24:01 -0400
+Subject: [PATCH 4349/4736] drm/amd/display: Use SIGNAL_TYPE_NONE in
+ disable_output unless eDP
+
+[WHY]
+Currently made a change where disable_output is called using signal_type.
+Using actual signal_type when calilng disable_output in power_down_encoders
+would make DP to HDMI dongle not light up on boot. As it would have signal_type
+SIGNAL_TYPE_DISPLAY_PORT.
+
+[HOW]
+Set signal_type to SIGNAL_TYPE_NONE unless it is eDP.
+
+Signed-off-by: Sung Lee <sung.lee@amd.com>
+Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
+Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+index 0d171874ef4e..050634926263 100644
+--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
++++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+@@ -1435,6 +1435,9 @@ static void power_down_encoders(struct dc *dc)
+ 			if (!dc->links[i]->wa_flags.dp_keep_receiver_powered)
+ 				dp_receiver_power_ctrl(dc->links[i], false);
+ 
++		if (signal != SIGNAL_TYPE_EDP)
++			signal = SIGNAL_TYPE_NONE;
++
+ 		dc->links[i]->link_enc->funcs->disable_output(
+ 				dc->links[i]->link_enc, signal);
+ 	}
+-- 
+2.17.1
+