diff --git a/common/Makefile.inc b/common/Makefile.inc
index 175c152..236a323 100644
--- a/common/Makefile.inc
+++ b/common/Makefile.inc
@@ -64,7 +64,7 @@
 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_TLA_SUBSTITUTIONS := i945 g45 ilk hsw skl tgl
+_GEN_TLA_SUBSTITUTIONS := i945 g45 ilk hsw skl tgl adl
 
 _GEN_NONCONST := $(strip \
 		 $(if $(filter I945,$(CONFIG_GFX_GMA_GENERATION)),i945, \
@@ -72,7 +72,8 @@
 		 $(if $(filter Ironlake,$(CONFIG_GFX_GMA_GENERATION)),ilk, \
 		 $(if $(filter Haswell,$(CONFIG_GFX_GMA_GENERATION)),hsw,  \
 		 $(if $(filter Skylake,$(CONFIG_GFX_GMA_GENERATION)),skl, \
-		 $(if $(filter Tigerlake,$(CONFIG_GFX_GMA_GENERATION)),tgl)))))))
+		 $(if $(filter Tigerlake,$(CONFIG_GFX_GMA_GENERATION)),tgl, \
+		 $(if $(filter AlderlakeP,$(CONFIG_GFX_GMA_GENERATION)),adl))))))))
 # GNATprove (GPL 2017) doesn't realize when a boolean expression
 # that depends both on static values and variables can be evalu-
 # ated at compile time (e.g. `False and then Variable` is always
@@ -138,6 +139,6 @@
 subdirs-y += haswell_shared broxton
 else ifneq ($(filter Skylake,$(CONFIG_GFX_GMA_GENERATION)),)
 subdirs-y += haswell_shared skylake
-else ifneq ($(filter Tigerlake,$(CONFIG_GFX_GMA_GENERATION)),)
+else ifneq ($(filter Tigerlake AlderlakeP,$(CONFIG_GFX_GMA_GENERATION)),)
 subdirs-y += tigerlake
 endif