drm/amd/display: Add fallback configuration for set DRR in DCN10

Set OTG/OPTC parameters to 0 if something goes wrong on DCN10.
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c

@@ -945,10 +945,19 @@ void optc1_set_drr(
 				OTG_FORCE_LOCK_ON_EVENT, 0,
 				OTG_SET_V_TOTAL_MIN_MASK_EN, 0,
 				OTG_SET_V_TOTAL_MIN_MASK, 0);
-	}
 
-	// Setup manual flow control for EOF via TRIG_A
-	optc->funcs->setup_manual_trigger(optc);
+		// Setup manual flow control for EOF via TRIG_A
+		optc->funcs->setup_manual_trigger(optc);
+
+	} else {
+		REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
+				OTG_SET_V_TOTAL_MIN_MASK, 0,
+				OTG_V_TOTAL_MIN_SEL, 0,
+				OTG_V_TOTAL_MAX_SEL, 0,
+				OTG_FORCE_LOCK_ON_EVENT, 0);
+
+		optc->funcs->set_vtotal_min_max(optc, 0, 0);
+	}
 }
 
 void optc1_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max)