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/fsl-mmdc/fsl_mmdc.h b/drivers/nxp/ddr/fsl-mmdc/fsl_mmdc.h
new file mode 100644
index 0000000..31db552
--- /dev/null
+++ b/drivers/nxp/ddr/fsl-mmdc/fsl_mmdc.h
@@ -0,0 +1,173 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef FSL_MMDC_H
+#define FSL_MMDC_H
+
+/* PHY Write Leveling Configuration and Error Status Register (MPWLGCR) */
+#define MPWLGCR_HW_WL_EN		(1 << 0)
+
+/* PHY Pre-defined Compare and CA delay-line Configuration (MPPDCMPR2) */
+#define MPPDCMPR2_MPR_COMPARE_EN	(1 << 0)
+
+
+/* MMDC PHY Read DQS gating control register 0 (MPDGCTRL0) */
+#define AUTO_RD_DQS_GATING_CALIBRATION_EN	(1 << 28)
+
+/* MMDC PHY Read Delay HW Calibration Control Register (MPRDDLHWCTL) */
+#define MPRDDLHWCTL_AUTO_RD_CALIBRATION_EN	(1 << 4)
+
+/* MMDC Core Power Saving Control and Status Register (MMDC_MAPSR) */
+#define MMDC_MAPSR_PWR_SAV_CTRL_STAT	0x00001067
+
+/* MMDC Core Refresh Control Register (MMDC_MDREF) */
+#define MDREF_START_REFRESH	(1 << 0)
+
+/* MMDC Core Special Command Register (MDSCR) */
+#define CMD_ADDR_MSB_MR_OP(x)	(x << 24)
+#define CMD_ADDR_LSB_MR_ADDR(x)	(x << 16)
+#define MDSCR_DISABLE_CFG_REQ	(0 << 15)
+#define MDSCR_ENABLE_CON_REQ	(1 << 15)
+#define MDSCR_CON_ACK		(1 << 14)
+#define MDSCR_WL_EN		(1 << 9)
+#define	CMD_NORMAL		(0 << 4)
+#define	CMD_PRECHARGE		(1 << 4)
+#define	CMD_AUTO_REFRESH	(2 << 4)
+#define	CMD_LOAD_MODE_REG	(3 << 4)
+#define	CMD_ZQ_CALIBRATION	(4 << 4)
+#define	CMD_PRECHARGE_BANK_OPEN	(5 << 4)
+#define	CMD_MRR			(6 << 4)
+#define CMD_BANK_ADDR_0		0x0
+#define CMD_BANK_ADDR_1		0x1
+#define CMD_BANK_ADDR_2		0x2
+#define CMD_BANK_ADDR_3		0x3
+#define CMD_BANK_ADDR_4		0x4
+#define CMD_BANK_ADDR_5		0x5
+#define CMD_BANK_ADDR_6		0x6
+#define CMD_BANK_ADDR_7		0x7
+
+/* MMDC Core Control Register (MDCTL) */
+#define MDCTL_SDE0		(U(1) << 31)
+#define MDCTL_SDE1		(1 << 30)
+
+/* MMDC PHY ZQ HW control register (MMDC_MPZQHWCTRL) */
+#define MPZQHWCTRL_ZQ_HW_FORCE	(1 << 16)
+
+/* MMDC PHY Measure Unit Register (MMDC_MPMUR0) */
+#define MMDC_MPMUR0_FRC_MSR	(1 << 11)
+
+/* MMDC PHY Read delay-lines Configuration Register (MMDC_MPRDDLCTL) */
+/* default 64 for a quarter cycle delay */
+#define MMDC_MPRDDLCTL_DEFAULT_DELAY	0x40404040
+
+/* MMDC Registers */
+struct mmdc_regs {
+	unsigned int mdctl;
+	unsigned int mdpdc;
+	unsigned int mdotc;
+	unsigned int mdcfg0;
+	unsigned int mdcfg1;
+	unsigned int mdcfg2;
+	unsigned int mdmisc;
+	unsigned int mdscr;
+	unsigned int mdref;
+	unsigned int res1[2];
+	unsigned int mdrwd;
+	unsigned int mdor;
+	unsigned int mdmrr;
+	unsigned int mdcfg3lp;
+	unsigned int mdmr4;
+	unsigned int mdasp;
+	unsigned int res2[239];
+	unsigned int maarcr;
+	unsigned int mapsr;
+	unsigned int maexidr0;
+	unsigned int maexidr1;
+	unsigned int madpcr0;
+	unsigned int madpcr1;
+	unsigned int madpsr0;
+	unsigned int madpsr1;
+	unsigned int madpsr2;
+	unsigned int madpsr3;
+	unsigned int madpsr4;
+	unsigned int madpsr5;
+	unsigned int masbs0;
+	unsigned int masbs1;
+	unsigned int res3[2];
+	unsigned int magenp;
+	unsigned int res4[239];
+	unsigned int mpzqhwctrl;
+	unsigned int mpzqswctrl;
+	unsigned int mpwlgcr;
+	unsigned int mpwldectrl0;
+	unsigned int mpwldectrl1;
+	unsigned int mpwldlst;
+	unsigned int mpodtctrl;
+	unsigned int mprddqby0dl;
+	unsigned int mprddqby1dl;
+	unsigned int mprddqby2dl;
+	unsigned int mprddqby3dl;
+	unsigned int mpwrdqby0dl;
+	unsigned int mpwrdqby1dl;
+	unsigned int mpwrdqby2dl;
+	unsigned int mpwrdqby3dl;
+	unsigned int mpdgctrl0;
+	unsigned int mpdgctrl1;
+	unsigned int mpdgdlst0;
+	unsigned int mprddlctl;
+	unsigned int mprddlst;
+	unsigned int mpwrdlctl;
+	unsigned int mpwrdlst;
+	unsigned int mpsdctrl;
+	unsigned int mpzqlp2ctl;
+	unsigned int mprddlhwctl;
+	unsigned int mpwrdlhwctl;
+	unsigned int mprddlhwst0;
+	unsigned int mprddlhwst1;
+	unsigned int mpwrdlhwst0;
+	unsigned int mpwrdlhwst1;
+	unsigned int mpwlhwerr;
+	unsigned int mpdghwst0;
+	unsigned int mpdghwst1;
+	unsigned int mpdghwst2;
+	unsigned int mpdghwst3;
+	unsigned int mppdcmpr1;
+	unsigned int mppdcmpr2;
+	unsigned int mpswdar0;
+	unsigned int mpswdrdr0;
+	unsigned int mpswdrdr1;
+	unsigned int mpswdrdr2;
+	unsigned int mpswdrdr3;
+	unsigned int mpswdrdr4;
+	unsigned int mpswdrdr5;
+	unsigned int mpswdrdr6;
+	unsigned int mpswdrdr7;
+	unsigned int mpmur0;
+	unsigned int mpwrcadl;
+	unsigned int mpdccr;
+};
+
+struct fsl_mmdc_info {
+	unsigned int mdctl;
+	unsigned int mdpdc;
+	unsigned int mdotc;
+	unsigned int mdcfg0;
+	unsigned int mdcfg1;
+	unsigned int mdcfg2;
+	unsigned int mdmisc;
+	unsigned int mdref;
+	unsigned int mdrwd;
+	unsigned int mdor;
+	unsigned int mdasp;
+	unsigned int mpodtctrl;
+	unsigned int mpzqhwctrl;
+	unsigned int mprddlctl;
+};
+
+void mmdc_init(const struct fsl_mmdc_info *priv, uintptr_t nxp_ddr_addr);
+
+#endif /* FSL_MMDC_H */