diff --git a/common/hw-gfx-gma-config.ads.template b/common/hw-gfx-gma-config.ads.template
index 6a6bc9c..75ba159 100644
--- a/common/hw-gfx-gma-config.ads.template
+++ b/common/hw-gfx-gma-config.ads.template
@@ -341,6 +341,10 @@
    Last_Digital_Port : <hswsklvar> Digital_Port :=
      (if Has_DDI_E then DIGI_E else DIGI_C);
 
+   Last_TC_Port   : constant TGL_Digital_Port :=
+     (if not Tigerlake_On  then DIGI_E    -- Makes 'First..Last_TC_Port empty.
+                           else DDI_TC4);
+
    ----------------------------------------------------------------------------
 
    type FDI_Per_Port is array (Port_Type) of Boolean;