diff --git a/plat/renesas/rcar/platform.mk b/plat/renesas/rcar/platform.mk
index 11de559..670d499 100644
--- a/plat/renesas/rcar/platform.mk
+++ b/plat/renesas/rcar/platform.mk
@@ -245,6 +245,12 @@
 endif
 $(eval $(call add_define,RCAR_DRAM_LPDDR4_MEMCONF))
 
+# Process RCAR_DRAM_MEMRANK flag
+ifndef RCAR_DRAM_MEMRANK
+RCAR_DRAM_MEMRANK :=0
+endif
+$(eval $(call add_define,RCAR_DRAM_MEMRANK))
+
 # Process RCAR_DRAM_DDR3L_MEMCONF flag
 ifndef RCAR_DRAM_DDR3L_MEMCONF
 RCAR_DRAM_DDR3L_MEMCONF :=1