diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index ef9a69759bd51e9ece51f5dff596c49a5deca9a5..823a8722449809ed57e84db07b8cda5f1d2af7c1 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -147,6 +147,7 @@ struct dc_debug {
 	bool disable_power_gate;
 	bool disable_clock_gate;
 	bool disable_dmcu;
+	bool disable_hdmi_deep_color;
 };
 
 struct dc {
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
index a8a2290d47db22ae1bfe74db67ac3e9beb192567..b439a9ee0228253841d981707ef152823a0ac44a 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -993,6 +993,9 @@ bool dce110_link_encoder_construct(
 	enc110->base.features.max_deep_color = COLOR_DEPTH_121212;
 	enc110->base.features.max_hdmi_deep_color = COLOR_DEPTH_121212;
 
+	if (enc110->base.ctx->dc->debug.disable_hdmi_deep_color)
+		enc110->base.features.max_hdmi_deep_color = COLOR_DEPTH_888;
+
 	/* set the flag to indicate whether driver poll the I2C data pin
 	 * while doing the DP sink detect
 	 */