diff --git a/common/Makefile.inc b/common/Makefile.inc
index af6dc11..f5d2c76 100644
--- a/common/Makefile.inc
+++ b/common/Makefile.inc
@@ -55,6 +55,7 @@
 CONFIG_GFX_GMA_PANEL_1_PORT	:= $(call strip_quotes,$(CONFIG_GFX_GMA_PANEL_1_PORT))
 CONFIG_GFX_GMA_PANEL_2_PORT	:= $(call strip_quotes,$(CONFIG_GFX_GMA_PANEL_2_PORT))
 CONFIG_GFX_GMA_ANALOG_I2C_PORT	:= $(call strip_quotes,$(CONFIG_GFX_GMA_ANALOG_I2C_PORT))
+CONFIG_GFX_GMA_IGNORE_PRESENCE_STRAPS := $(if $(filter y,$(CONFIG_GFX_GMA_IGNORE_PRESENCE_STRAPS)),True,False)
 
 _GEN_NONCONST := $(strip \
 		 $(if $(filter G45,$(CONFIG_GFX_GMA_GENERATION)),g45, \
@@ -79,6 +80,7 @@
 	    -e's/<<PANEL_2_PORT>>/$(CONFIG_GFX_GMA_PANEL_2_PORT)/' \
 	    -e's/<<ANALOG_I2C_PORT>>/$(CONFIG_GFX_GMA_ANALOG_I2C_PORT)/' \
 	    -e's/<<DEFAULT_MMIO_BASE>>/$(CONFIG_GFX_GMA_DEFAULT_MMIO)/' \
+	    -e's/<<IGNORE_STRAPS>>/$(CONFIG_GFX_GMA_IGNORE_PRESENCE_STRAPS)/' \
 	    -e'/constant Gen_CPU\(_Var\)\?/d' \
 	    -e's/<genbool>/constant Boolean/' \
 	    -e's/<\(\(g45\|ilk\|hsw\|skl\)\(...\)\?\)bool>/<\1var> Boolean/' \
@@ -98,6 +100,7 @@
 	    -e's/<<PANEL_2_PORT>>/$(CONFIG_GFX_GMA_PANEL_2_PORT)/' \
 	    -e's/<<ANALOG_I2C_PORT>>/$(CONFIG_GFX_GMA_ANALOG_I2C_PORT)/' \
 	    -e's/<<DEFAULT_MMIO_BASE>>/$(CONFIG_GFX_GMA_DEFAULT_MMIO)/' \
+	    -e's/<<IGNORE_STRAPS>>/$(CONFIG_GFX_GMA_IGNORE_PRESENCE_STRAPS)/' \
 	    -e":s$$(printf '\n ')/,$$/{N;s/,\n.*Dyn_CPU\(_Var\)\?[^,)]*//;ts$$(printf '\n ')P;D;}" \
 	    -e'/Dyn_CPU\(_Var\)\?/d' \
 	    -e's/<\(gen\|\(g45\|ilk\|hsw\|skl\)\(...\)\?\)bool>/constant Boolean/' \
diff --git a/common/haswell_shared/hw-gfx-gma-port_detect.adb b/common/haswell_shared/hw-gfx-gma-port_detect.adb
index 09136ff..5765941 100644
--- a/common/haswell_shared/hw-gfx-gma-port_detect.adb
+++ b/common/haswell_shared/hw-gfx-gma-port_detect.adb
@@ -88,7 +88,7 @@
       end if;
 
       -- DDI_A
-      if Config.Has_Presence_Straps then
+      if Config.Has_Presence_Straps and not Config.Ignore_Presence_Straps then
          Registers.Is_Set_Mask
            (Register => Registers.DDI_BUF_CTL_A,
             Mask     => DDI_PORT_DETECTED (DIGI_A),
@@ -123,7 +123,7 @@
       for Port in Ext_Digital_Port range
          DIGI_B .. Ext_Digital_Port'Min (DIGI_D, Config.Last_Digital_Port)
       loop
-         if Config.Has_Presence_Straps then
+         if Config.Has_Presence_Straps and not Config.Ignore_Presence_Straps then
             Registers.Is_Set_Mask
               (Register => Registers.SFUSE_STRAP,
                Mask     => DDI_PORT_DETECTED (Port),
diff --git a/common/hw-gfx-gma-config.ads.template b/common/hw-gfx-gma-config.ads.template
index b9ba9f8..241fe8e 100644
--- a/common/hw-gfx-gma-config.ads.template
+++ b/common/hw-gfx-gma-config.ads.template
@@ -57,6 +57,8 @@
 
    LVDS_Dual_Threshold : constant := 95_000_000;
 
+   Ignore_Presence_Straps : constant Boolean := <<IGNORE_STRAPS>>;
+
    ----------------------------------------------------------------------------
 
    -- On older generations dot clocks are limited to 90% of