diff --git a/src/mainboard/intel/mtlrvp/Kconfig b/src/mainboard/intel/mtlrvp/Kconfig
index db7c161ec9..2905407893 100644
--- a/src/mainboard/intel/mtlrvp/Kconfig
+++ b/src/mainboard/intel/mtlrvp/Kconfig
@@ -8,6 +8,9 @@ config BOARD_INTEL_MTLRVP_COMMON
 config BOARD_INTEL_MTLRVP_P
 	select BOARD_INTEL_MTLRVP_COMMON
 
+config BOARD_INTEL_MTLRVP_P_EXT_EC
+	select BOARD_INTEL_MTLRVP_COMMON
+
 if BOARD_INTEL_MTLRVP_COMMON
 
 config MAINBOARD_DIR
@@ -15,7 +18,7 @@ config MAINBOARD_DIR
 
 config BASEBOARD_DIR
 	string
-	default "mtlrvp"
+	default "mtlrvp_p" if BOARD_INTEL_MTLRVP_P || BOARD_INTEL_MTLRVP_P_EXT_EC
 
 config MAINBOARD_PART_NUMBER
 	string
@@ -31,9 +34,14 @@ config MAINBOARD_FAMILY
 config VARIANT_DIR
 	string
 	default "mtlrvp_p" if BOARD_INTEL_MTLRVP_P
+	default "mtlrvp_p_ext_ec" if BOARD_INTEL_MTLRVP_P_EXT_EC
 
 config DEVICETREE
 	string
-	default "devicetree.cb"
+	default "variants/baseboard/\$(CONFIG_BASEBOARD_DIR)/devicetree.cb"
+
+config OVERRIDE_DEVICETREE
+	string
+	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
 endif # BOARD_INTEL_MTLRVP_COMMON
diff --git a/src/mainboard/intel/mtlrvp/Kconfig.name b/src/mainboard/intel/mtlrvp/Kconfig.name
index b643b94234..e14c6280c0 100644
--- a/src/mainboard/intel/mtlrvp/Kconfig.name
+++ b/src/mainboard/intel/mtlrvp/Kconfig.name
@@ -1,2 +1,5 @@
 config BOARD_INTEL_MTLRVP_P
 	bool "Meteorlake-P RVP"
+
+config BOARD_INTEL_MTLRVP_P_EXT_EC
+	bool "Meteorlake-P RVP with Chrome EC"
diff --git a/src/mainboard/intel/mtlrvp/devicetree.cb b/src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp_p/devicetree.cb
similarity index 100%
rename from src/mainboard/intel/mtlrvp/devicetree.cb
rename to src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp_p/devicetree.cb
diff --git a/src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp/include/baseboard/gpio.h b/src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp_p/include/baseboard/gpio.h
similarity index 100%
rename from src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp/include/baseboard/gpio.h
rename to src/mainboard/intel/mtlrvp/variants/baseboard/mtlrvp_p/include/baseboard/gpio.h
diff --git a/src/mainboard/intel/mtlrvp/variants/mtlrvp_p/overridetree.cb b/src/mainboard/intel/mtlrvp/variants/mtlrvp_p/overridetree.cb
new file mode 100644
index 0000000000..7ca002470e
--- /dev/null
+++ b/src/mainboard/intel/mtlrvp/variants/mtlrvp_p/overridetree.cb
@@ -0,0 +1,4 @@
+chip soc/intel/meteorlake
+
+	device domain 0 on end
+end
diff --git a/src/mainboard/intel/mtlrvp/variants/mtlrvp_p_ext_ec/overridetree.cb b/src/mainboard/intel/mtlrvp/variants/mtlrvp_p_ext_ec/overridetree.cb
new file mode 100644
index 0000000000..7ca002470e
--- /dev/null
+++ b/src/mainboard/intel/mtlrvp/variants/mtlrvp_p_ext_ec/overridetree.cb
@@ -0,0 +1,4 @@
+chip soc/intel/meteorlake
+
+	device domain 0 on end
+end