From 8ff6a6ef99a6ab2f25933cfb5bf1d0d3d7d267d8 Mon Sep 17 00:00:00 2001
From: Yi-Ling Chen <yi-lchen@amd.com>
Date: Tue, 1 Sep 2026 15:33:36 +0800
Subject: [PATCH] drm/amd/display: Add option for certain panels to disable FEC

[Why]
Disable FEC for certain panels.

[How]
To align FEC HW/SW status when enabling the option.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Yi-Ling Chen <yi-lchen@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index dbdaf9415dfa..171d8bb24844 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1869,6 +1869,12 @@ bool dc_validate_boot_timing(const struct dc *dc,
 		return false;
 	}
 
+	if (sink->edid_caps.panel_patch.disable_fec &&
+		(link->fec_state == dc_link_fec_enabled)) {
+		DC_LOG_DEBUG("boot timing validation failed due to FEC WA & FEC HW is active\n");
+		return false;
+	}
+
 	/* Check for enabled DIG to identify enabled display */
 	if (!link->link_enc->funcs->is_dig_enabled(link->link_enc)) {
 		DC_LOG_DEBUG("boot timing validation failed due to disabled DIG\n");