nxp: ddr driver enablement for nxp layerscape soc

DDR driver for NXP layerscape SoC(s):
 - lx2160aqds
 - lx2162aqds
 - lx2160ardb
 - Other Board with SoC(s) like ls1046a, ls1043a etc;
	-- These other boards are not verified yet.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: York Sun <york.sun@nxp.com>
Signed-off-by: Udit Agarwal <udit.agarwal@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: Ic84a63cb30eba054f432d479862cd4d1097cbbaf
diff --git a/drivers/nxp/ddr/nxp-ddr/ddr.mk b/drivers/nxp/ddr/nxp-ddr/ddr.mk
new file mode 100644
index 0000000..866c092
--- /dev/null
+++ b/drivers/nxp/ddr/nxp-ddr/ddr.mk
@@ -0,0 +1,79 @@
+#
+# Copyright 2021 NXP
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+DDR_DRIVERS_PATH	:= ${PLAT_DRIVERS_PATH}/ddr
+
+ifeq ($(PLAT_DDR_PHY), PHY_GEN2)
+$(eval $(call add_define, PHY_GEN2))
+PLAT_DDR_PHY_DIR		:= phy-gen2
+ifeq (${APPLY_MAX_CDD},yes)
+$(eval $(call add_define,NXP_APPLY_MAX_CDD))
+endif
+
+ifeq (${ERRATA_DDR_A011396}, 1)
+$(eval $(call add_define,ERRATA_DDR_A011396))
+endif
+
+ifeq (${ERRATA_DDR_A050450}, 1)
+$(eval $(call add_define,ERRATA_DDR_A050450))
+endif
+
+endif
+
+ifeq ($(PLAT_DDR_PHY), PHY_GEN1)
+PLAT_DDR_PHY_DIR		:= phy-gen1
+
+ifeq (${ERRATA_DDR_A008511},1)
+$(eval $(call add_define,ERRATA_DDR_A008511))
+endif
+
+ifeq (${ERRATA_DDR_A009803},1)
+$(eval $(call add_define,ERRATA_DDR_A009803))
+endif
+
+ifeq (${ERRATA_DDR_A009942},1)
+$(eval $(call add_define,ERRATA_DDR_A009942))
+endif
+
+ifeq (${ERRATA_DDR_A010165},1)
+$(eval $(call add_define,ERRATA_DDR_A010165))
+endif
+
+endif
+
+ifeq ($(DDR_BIST), yes)
+$(eval $(call add_define, BIST_EN))
+endif
+
+ifeq ($(DDR_DEBUG), yes)
+$(eval $(call add_define, DDR_DEBUG))
+endif
+
+ifeq ($(DDR_PHY_DEBUG), yes)
+$(eval $(call add_define, DDR_PHY_DEBUG))
+endif
+
+ifeq ($(DEBUG_PHY_IO), yes)
+$(eval $(call add_define, DEBUG_PHY_IO))
+endif
+
+ifeq ($(DEBUG_WARM_RESET), yes)
+$(eval $(call add_define, DEBUG_WARM_RESET))
+endif
+
+ifeq ($(DEBUG_DDR_INPUT_CONFIG), yes)
+$(eval $(call add_define, DEBUG_DDR_INPUT_CONFIG))
+endif
+
+DDR_CNTLR_SOURCES	:= $(DDR_DRIVERS_PATH)/nxp-ddr/ddr.c \
+			   $(DDR_DRIVERS_PATH)/nxp-ddr/ddrc.c \
+			   $(DDR_DRIVERS_PATH)/nxp-ddr/dimm.c \
+			   $(DDR_DRIVERS_PATH)/nxp-ddr/regs.c \
+			   $(DDR_DRIVERS_PATH)/nxp-ddr/utility.c \
+			   $(DDR_DRIVERS_PATH)/$(PLAT_DDR_PHY_DIR)/phy.c
+
+PLAT_INCLUDES		+= -I$(DDR_DRIVERS_PATH)/nxp-ddr \
+			   -I$(DDR_DRIVERS_PATH)/include