diff mbox

[U-Boot] driver/ddr/fsl: Add general MMDC driver and reuse common MMDC driver for ls1012a

Message ID 1472207439-3275-2-git-send-email-Shengzhou.Liu@nxp.com
State Accepted
Commit b9e745bbe2562fda710d668dc9cef46e0b23049f
Delegated to: York Sun
Headers show

Commit Message

Shengzhou Liu Aug. 26, 2016, 10:30 a.m. UTC 
This general MMDC driver adds basic support for Freescale MMDC
(Multi Mode DDR Controller). Currently MMDC is integrated on ARMv8
LS1012A SoC for DDR3L, there will be a update to this driver to
support more flexible configuration if new features (DDR4, multiple
controllers/chip selections, etc) are implimented in future.

Meantime, reuse common MMDC driver for LS1012ARDB/LS1012AQDS/LS1012AFRDM.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
---
 Makefile                                          |   1 +
 arch/arm/include/asm/arch-fsl-layerscape/config.h |   4 +-
 board/freescale/ls1012afrdm/ls1012afrdm.c         | 116 ----------------
 board/freescale/ls1012aqds/ls1012aqds.c           | 116 ----------------
 board/freescale/ls1012ardb/ls1012ardb.c           | 116 ----------------
 drivers/ddr/fsl/Makefile                          |   1 +
 drivers/ddr/fsl/fsl_mmdc.c                        | 156 ++++++++++++++++++++++
 include/configs/ls1012afrdm.h                     |  22 ++-
 include/configs/ls1012aqds.h                      |  23 +++-
 include/configs/ls1012ardb.h                      |  21 ++-
 include/fsl_mmdc.h                                |  95 +++++++------
 11 files changed, 262 insertions(+), 409 deletions(-)
 create mode 100644 drivers/ddr/fsl/fsl_mmdc.c

Comments

York Sun Sept. 20, 2016, 6:05 p.m. UTC | #1 
On 08/26/2016 03:42 AM, Shengzhou Liu wrote:
> This general MMDC driver adds basic support for Freescale MMDC
> (Multi Mode DDR Controller). Currently MMDC is integrated on ARMv8
> LS1012A SoC for DDR3L, there will be a update to this driver to
> support more flexible configuration if new features (DDR4, multiple
> controllers/chip selections, etc) are implimented in future.
>
> Meantime, reuse common MMDC driver for LS1012ARDB/LS1012AQDS/LS1012AFRDM.
>
> Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
> ---


Applied to fsl-qoriq master. Awaiting upstream. Thanks.

York
diff mbox

Patch

diff --git a/Makefile b/Makefile
index 99cc8cf..1bf6c6a 100644
--- a/Makefile
+++ b/Makefile
@@ -647,6 +647,7 @@  libs-y += drivers/power/ \
 libs-y += drivers/spi/
 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
+libs-$(CONFIG_SYS_FSL_MMDC) += drivers/ddr/fsl/
 libs-$(CONFIG_ALTERA_SDRAM) += drivers/ddr/altera/
 libs-y += drivers/serial/
 libs-y += drivers/usb/dwc3/
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index b0ad4b4..d1d76be 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -15,7 +15,9 @@ 
 #define CONFIG_SYS_FSL_DDRC_ARM_GEN3	/* Enable Freescale ARM DDR3 driver */
 #endif
 
-#ifndef CONFIG_LS1012A
+#ifdef CONFIG_LS1012A
+#define CONFIG_SYS_FSL_MMDC		/* Freescale MMDC driver */
+#else
 #define CONFIG_SYS_FSL_DDR		/* Freescale DDR driver */
 #define CONFIG_SYS_FSL_DDR_VER		FSL_DDR_VER_5_0
 #endif
diff --git a/board/freescale/ls1012afrdm/ls1012afrdm.c b/board/freescale/ls1012afrdm/ls1012afrdm.c
index a94a458..0bbb558 100644
--- a/board/freescale/ls1012afrdm/ls1012afrdm.c
+++ b/board/freescale/ls1012afrdm/ls1012afrdm.c
@@ -18,20 +18,6 @@ 
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
-{
-	int timeout = 1000;
-
-	out_be32(ptr, value);
-
-	while (in_be32(ptr) & bits) {
-		udelay(100);
-		timeout--;
-	}
-	if (timeout <= 0)
-		puts("Error: wait for clear timeout.\n");
-}
-
 int checkboard(void)
 {
 	puts("Board: LS1012AFRDM ");
@@ -39,108 +25,6 @@  int checkboard(void)
 	return 0;
 }
 
-void mmdc_init(void)
-{
-	struct mmdc_p_regs *mmdc =
-		(struct mmdc_p_regs *)CONFIG_SYS_FSL_DDR_ADDR;
-
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	/* configure timing parms */
-	out_be32(&mmdc->mdotc,  CONFIG_SYS_MMDC_CORE_ODT_TIMING);
-	out_be32(&mmdc->mdcfg0, CONFIG_SYS_MMDC_CORE_TIMING_CFG_0);
-	out_be32(&mmdc->mdcfg1, CONFIG_SYS_MMDC_CORE_TIMING_CFG_1);
-	out_be32(&mmdc->mdcfg2, CONFIG_SYS_MMDC_CORE_TIMING_CFG_2);
-
-	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    CONFIG_SYS_MMDC_CORE_MISC);
-	out_be32(&mmdc->mpmur0,    CONFIG_SYS_MMDC_PHY_MEASURE_UNIT);
-	out_be32(&mmdc->mdrwd,     CONFIG_SYS_MMDC_CORE_RDWR_CMD_DELAY);
-	out_be32(&mmdc->mpodtctrl, CONFIG_SYS_MMDC_PHY_ODT_CTRL);
-
-	/* out of reset delays */
-	out_be32(&mmdc->mdor,  CONFIG_SYS_MMDC_CORE_OUT_OF_RESET_DELAY);
-
-	/* physical parms */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_1);
-	out_be32(&mmdc->mdasp, CONFIG_SYS_MMDC_CORE_ADDR_PARTITION);
-
-       /* Enable MMDC */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_2);
-
-	/* dram init sequence: update MRs */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x8) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_2));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x19) |
-				CMD_ADDR_LSB_MR_ADDR(0x30) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_0));
-
-       /* dram init sequence: ZQCL */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_ZQ_CALIBRATION | CMD_BANK_ADDR_0));
-	set_wait_for_bits_clear(&mmdc->mpzqhwctrl,
-				CONFIG_SYS_MMDC_PHY_ZQ_HW_CTRL,
-				FORCE_ZQ_AUTO_CALIBRATION);
-
-       /* Calibrations now: wr lvl */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x84) |
-				CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | WL_EN | CMD_NORMAL));
-	set_wait_for_bits_clear(&mmdc->mpwlgcr, WR_LVL_HW_EN, WR_LVL_HW_EN);
-
-	mdelay(1);
-
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	mdelay(1);
-
-       /* Calibrations now: Read DQS gating calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2, MPR_COMPARE_EN);
-	out_be32(&mmdc->mprddlctl, CONFIG_SYS_MMDC_PHY_RD_DLY_LINES_CFG);
-	set_wait_for_bits_clear(&mmdc->mpdgctrl0,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* Calibrations now: Read calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2,  MPR_COMPARE_EN);
-	set_wait_for_bits_clear(&mmdc->mprddlhwctl,
-				AUTO_RD_CALIBRATION_EN,
-				AUTO_RD_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* PD, SR */
-	out_be32(&mmdc->mdpdc, CONFIG_SYS_MMDC_CORE_PWR_DOWN_CTRL);
-	out_be32(&mmdc->mapsr, CONFIG_SYS_MMDC_CORE_PWR_SAV_CTRL_STAT);
-
-       /* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref,
-				CONFIG_SYS_MMDC_CORE_REFRESH_CTL,
-				START_REFRESH);
-
-       /* disable CON_REQ */
-	out_be32(&mmdc->mdscr, DISABLE_CFG_REQ);
-}
-
 int dram_init(void)
 {
 	mmdc_init();
diff --git a/board/freescale/ls1012aqds/ls1012aqds.c b/board/freescale/ls1012aqds/ls1012aqds.c
index 71eea82..392b6c2 100644
--- a/board/freescale/ls1012aqds/ls1012aqds.c
+++ b/board/freescale/ls1012aqds/ls1012aqds.c
@@ -28,20 +28,6 @@ 
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
-{
-	int timeout = 1000;
-
-	out_be32(ptr, value);
-
-	while (in_be32(ptr) & bits) {
-		udelay(100);
-		timeout--;
-	}
-	if (timeout <= 0)
-		puts("Error: wait for clear timeout.\n");
-}
-
 int checkboard(void)
 {
 	char buf[64];
@@ -67,108 +53,6 @@  int checkboard(void)
 	return 0;
 }
 
-void mmdc_init(void)
-{
-	struct mmdc_p_regs *mmdc =
-		(struct mmdc_p_regs *)CONFIG_SYS_FSL_DDR_ADDR;
-
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	/* configure timing parms */
-	out_be32(&mmdc->mdotc,  CONFIG_SYS_MMDC_CORE_ODT_TIMING);
-	out_be32(&mmdc->mdcfg0, CONFIG_SYS_MMDC_CORE_TIMING_CFG_0);
-	out_be32(&mmdc->mdcfg1, CONFIG_SYS_MMDC_CORE_TIMING_CFG_1);
-	out_be32(&mmdc->mdcfg2, CONFIG_SYS_MMDC_CORE_TIMING_CFG_2);
-
-	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    CONFIG_SYS_MMDC_CORE_MISC);
-	out_be32(&mmdc->mpmur0,    CONFIG_SYS_MMDC_PHY_MEASURE_UNIT);
-	out_be32(&mmdc->mdrwd,     CONFIG_SYS_MMDC_CORE_RDWR_CMD_DELAY);
-	out_be32(&mmdc->mpodtctrl, CONFIG_SYS_MMDC_PHY_ODT_CTRL);
-
-	/* out of reset delays */
-	out_be32(&mmdc->mdor,  CONFIG_SYS_MMDC_CORE_OUT_OF_RESET_DELAY);
-
-	/* physical parms */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_1);
-	out_be32(&mmdc->mdasp, CONFIG_SYS_MMDC_CORE_ADDR_PARTITION);
-
-       /* Enable MMDC */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_2);
-
-	/* dram init sequence: update MRs */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x8) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_2));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x19) |
-				CMD_ADDR_LSB_MR_ADDR(0x30) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_0));
-
-       /* dram init sequence: ZQCL */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_ZQ_CALIBRATION | CMD_BANK_ADDR_0));
-	set_wait_for_bits_clear(&mmdc->mpzqhwctrl,
-				CONFIG_SYS_MMDC_PHY_ZQ_HW_CTRL,
-				FORCE_ZQ_AUTO_CALIBRATION);
-
-       /* Calibrations now: wr lvl */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x84) |
-				CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | WL_EN | CMD_NORMAL));
-	set_wait_for_bits_clear(&mmdc->mpwlgcr, WR_LVL_HW_EN, WR_LVL_HW_EN);
-
-	mdelay(1);
-
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	mdelay(1);
-
-       /* Calibrations now: Read DQS gating calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2, MPR_COMPARE_EN);
-	out_be32(&mmdc->mprddlctl, CONFIG_SYS_MMDC_PHY_RD_DLY_LINES_CFG);
-	set_wait_for_bits_clear(&mmdc->mpdgctrl0,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* Calibrations now: Read calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2,  MPR_COMPARE_EN);
-	set_wait_for_bits_clear(&mmdc->mprddlhwctl,
-				AUTO_RD_CALIBRATION_EN,
-				AUTO_RD_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* PD, SR */
-	out_be32(&mmdc->mdpdc, CONFIG_SYS_MMDC_CORE_PWR_DOWN_CTRL);
-	out_be32(&mmdc->mapsr, CONFIG_SYS_MMDC_CORE_PWR_SAV_CTRL_STAT);
-
-       /* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref,
-				CONFIG_SYS_MMDC_CORE_REFRESH_CTL,
-				START_REFRESH);
-
-       /* disable CON_REQ */
-	out_be32(&mmdc->mdscr, DISABLE_CFG_REQ);
-}
-
 int dram_init(void)
 {
 	mmdc_init();
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index f69768d..80426f6 100644
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -22,20 +22,6 @@ 
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
-{
-	int timeout = 1000;
-
-	out_be32(ptr, value);
-
-	while (in_be32(ptr) & bits) {
-		udelay(100);
-		timeout--;
-	}
-	if (timeout <= 0)
-		puts("Error: wait for clear timeout.\n");
-}
-
 int checkboard(void)
 {
 	u8 in1;
@@ -71,108 +57,6 @@  int checkboard(void)
 	return 0;
 }
 
-void mmdc_init(void)
-{
-	struct mmdc_p_regs *mmdc =
-		(struct mmdc_p_regs *)CONFIG_SYS_FSL_DDR_ADDR;
-
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	/* configure timing parms */
-	out_be32(&mmdc->mdotc,  CONFIG_SYS_MMDC_CORE_ODT_TIMING);
-	out_be32(&mmdc->mdcfg0, CONFIG_SYS_MMDC_CORE_TIMING_CFG_0);
-	out_be32(&mmdc->mdcfg1, CONFIG_SYS_MMDC_CORE_TIMING_CFG_1);
-	out_be32(&mmdc->mdcfg2, CONFIG_SYS_MMDC_CORE_TIMING_CFG_2);
-
-	/* other parms	*/
-	out_be32(&mmdc->mdmisc,    CONFIG_SYS_MMDC_CORE_MISC);
-	out_be32(&mmdc->mpmur0,    CONFIG_SYS_MMDC_PHY_MEASURE_UNIT);
-	out_be32(&mmdc->mdrwd,     CONFIG_SYS_MMDC_CORE_RDWR_CMD_DELAY);
-	out_be32(&mmdc->mpodtctrl, CONFIG_SYS_MMDC_PHY_ODT_CTRL);
-
-	/* out of reset delays */
-	out_be32(&mmdc->mdor,  CONFIG_SYS_MMDC_CORE_OUT_OF_RESET_DELAY);
-
-	/* physical parms */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_1);
-	out_be32(&mmdc->mdasp, CONFIG_SYS_MMDC_CORE_ADDR_PARTITION);
-
-       /* Enable MMDC */
-	out_be32(&mmdc->mdctl, CONFIG_SYS_MMDC_CORE_CONTROL_2);
-
-	/* dram init sequence: update MRs */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x8) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_2));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x19) |
-				CMD_ADDR_LSB_MR_ADDR(0x30) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_0));
-
-       /* dram init sequence: ZQCL */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_ZQ_CALIBRATION | CMD_BANK_ADDR_0));
-	set_wait_for_bits_clear(&mmdc->mpzqhwctrl,
-				CONFIG_SYS_MMDC_PHY_ZQ_HW_CTRL,
-				FORCE_ZQ_AUTO_CALIBRATION);
-
-       /* Calibrations now: wr lvl */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x84) |
-				CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | WL_EN | CMD_NORMAL));
-	set_wait_for_bits_clear(&mmdc->mpwlgcr, WR_LVL_HW_EN, WR_LVL_HW_EN);
-
-	mdelay(1);
-
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1));
-	out_be32(&mmdc->mdscr, CONFIGURATION_REQ);
-
-	mdelay(1);
-
-       /* Calibrations now: Read DQS gating calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2, MPR_COMPARE_EN);
-	out_be32(&mmdc->mprddlctl, CONFIG_SYS_MMDC_PHY_RD_DLY_LINES_CFG);
-	set_wait_for_bits_clear(&mmdc->mpdgctrl0,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN,
-				AUTO_RD_DQS_GATING_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* Calibrations now: Read calibration */
-	out_be32(&mmdc->mdscr, (CMD_ADDR_MSB_MR_OP(0x4) | CONFIGURATION_REQ |
-				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0));
-	out_be32(&mmdc->mdscr, (CMD_ADDR_LSB_MR_ADDR(0x4) | CONFIGURATION_REQ |
-				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3));
-	out_be32(&mmdc->mppdcmpr2,  MPR_COMPARE_EN);
-	set_wait_for_bits_clear(&mmdc->mprddlhwctl,
-				AUTO_RD_CALIBRATION_EN,
-				AUTO_RD_CALIBRATION_EN);
-
-	out_be32(&mmdc->mdscr, (CONFIGURATION_REQ | CMD_LOAD_MODE_REG |
-				CMD_BANK_ADDR_3));
-
-       /* PD, SR */
-	out_be32(&mmdc->mdpdc, CONFIG_SYS_MMDC_CORE_PWR_DOWN_CTRL);
-	out_be32(&mmdc->mapsr, CONFIG_SYS_MMDC_CORE_PWR_SAV_CTRL_STAT);
-
-       /* refresh scheme */
-	set_wait_for_bits_clear(&mmdc->mdref,
-				CONFIG_SYS_MMDC_CORE_REFRESH_CTL,
-				START_REFRESH);
-
-       /* disable CON_REQ */
-	out_be32(&mmdc->mdscr, DISABLE_CFG_REQ);
-}
-
 int dram_init(void)
 {
 	mmdc_init();
diff --git a/drivers/ddr/fsl/Makefile b/drivers/ddr/fsl/Makefile
index 01ea862..00dea42 100644
--- a/drivers/ddr/fsl/Makefile
+++ b/drivers/ddr/fsl/Makefile
@@ -33,3 +33,4 @@  obj-$(CONFIG_SYS_FSL_DDRC_GEN3)	+= mpc85xx_ddr_gen3.o
 obj-$(CONFIG_SYS_FSL_DDR_86XX)		+= mpc86xx_ddr.o
 obj-$(CONFIG_SYS_FSL_DDRC_ARM_GEN3)	+= arm_ddr_gen3.o
 obj-$(CONFIG_SYS_FSL_DDRC_GEN4) += fsl_ddr_gen4.o
+obj-$(CONFIG_SYS_FSL_MMDC) += fsl_mmdc.o
diff --git a/drivers/ddr/fsl/fsl_mmdc.c b/drivers/ddr/fsl/fsl_mmdc.c
new file mode 100644
index 0000000..1e35967
--- /dev/null
+++ b/drivers/ddr/fsl/fsl_mmdc.c
@@ -0,0 +1,156 @@ 
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+/*
+ * Generic driver for Freescale MMDC(Multi Mode DDR Controller).
+ */
+
+#include <common.h>
+#include <fsl_mmdc.h>
+#include <asm/io.h>
+
+static void set_wait_for_bits_clear(void *ptr, u32 value, u32 bits)
+{
+	int timeout = 1000;
+
+	out_be32(ptr, value);
+
+	while (in_be32(ptr) & bits) {
+		udelay(100);
+		timeout--;
+	}
+	if (timeout <= 0)
+		printf("Error: %p wait for clear timeout.\n", ptr);
+}
+
+void mmdc_init(void)
+{
+	struct mmdc_regs *mmdc = (struct mmdc_regs *)CONFIG_SYS_FSL_DDR_ADDR;
+	unsigned int tmp;
+
+	/* 1. set configuration request */
+	out_be32(&mmdc->mdscr, MDSCR_ENABLE_CON_REQ);
+
+	/* 2. configure the desired timing parameters */
+	out_be32(&mmdc->mdotc,  CONFIG_MMDC_MDOTC);
+	out_be32(&mmdc->mdcfg0, CONFIG_MMDC_MDCFG0);
+	out_be32(&mmdc->mdcfg1, CONFIG_MMDC_MDCFG1);
+	out_be32(&mmdc->mdcfg2, CONFIG_MMDC_MDCFG2);
+
+	/* 3. configure DDR type and other miscellaneous parameters */
+	out_be32(&mmdc->mdmisc, CONFIG_MMDC_MDMISC);
+	out_be32(&mmdc->mpmur0,	MMDC_MPMUR0_FRC_MSR);
+	out_be32(&mmdc->mdrwd,  CONFIG_MMDC_MDRWD);
+	out_be32(&mmdc->mpodtctrl, CONFIG_MMDC_MPODTCTRL);
+
+	/* 4. configure the required delay while leaving reset */
+	out_be32(&mmdc->mdor,  CONFIG_MMDC_MDOR);
+
+	/* 5. configure DDR physical parameters */
+	/* set row/column address width, burst length, data bus width */
+	tmp = CONFIG_MMDC_MDCTL & ~(MDCTL_SDE0 | MDCTL_SDE1);
+	out_be32(&mmdc->mdctl, tmp);
+	/* configure address space partition */
+	out_be32(&mmdc->mdasp, CONFIG_MMDC_MDASP);
+
+	/* 6. perform a ZQ calibration - not needed here, doing in #8b */
+
+	/* 7. enable MMDC with the desired chip select */
+#if (CONFIG_CHIP_SELECTS_PER_CTRL == 1)
+		out_be32(&mmdc->mdctl, tmp | MDCTL_SDE0);
+#elif (CONFIG_CHIP_SELECTS_PER_CTRL == 2)
+		out_be32(&mmdc->mdctl, tmp | MDCTL_SDE0 | MDCTL_SDE1);
+#endif
+
+	/* 8a. dram init sequence: update MRs for ZQ, ODT, PRE, etc */
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(8) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_2);
+
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(0) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3);
+
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1);
+
+	out_be32(&mmdc->mdscr,  CMD_ADDR_MSB_MR_OP(0x19) |
+				CMD_ADDR_LSB_MR_ADDR(0x30) |
+				MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_0);
+
+	/* 8b. ZQ calibration */
+	out_be32(&mmdc->mdscr,  CMD_ADDR_MSB_MR_OP(0x4) | MDSCR_ENABLE_CON_REQ |
+				CMD_ZQ_CALIBRATION | CMD_BANK_ADDR_0);
+
+	set_wait_for_bits_clear(&mmdc->mpzqhwctrl, CONFIG_MMDC_MPZQHWCTRL,
+				MPZQHWCTRL_ZQ_HW_FORCE);
+
+	/* 9a. calibrations now, wr lvl */
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(0x84) |
+				MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1);
+
+	out_be32(&mmdc->mdscr,  MDSCR_ENABLE_CON_REQ | MDSCR_WL_EN |
+				CMD_NORMAL);
+
+	set_wait_for_bits_clear(&mmdc->mpwlgcr, MPWLGCR_HW_WL_EN,
+				MPWLGCR_HW_WL_EN);
+
+	mdelay(1);
+
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_1);
+	out_be32(&mmdc->mdscr, MDSCR_ENABLE_CON_REQ);
+
+	mdelay(1);
+
+	/* 9b. read DQS gating calibration */
+	out_be32(&mmdc->mdscr,  CMD_ADDR_MSB_MR_OP(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0);
+
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3);
+
+	out_be32(&mmdc->mppdcmpr2, MPPDCMPR2_MPR_COMPARE_EN);
+
+	/* set absolute read delay offset */
+#if defined(CONFIG_MMDC_MPRDDLCTL)
+	out_be32(&mmdc->mprddlctl, CONFIG_MMDC_MPRDDLCTL);
+#else
+	out_be32(&mmdc->mprddlctl, MMDC_MPRDDLCTL_DEFAULT_DELAY);
+#endif
+	set_wait_for_bits_clear(&mmdc->mpdgctrl0,
+				AUTO_RD_DQS_GATING_CALIBRATION_EN,
+				AUTO_RD_DQS_GATING_CALIBRATION_EN);
+
+	out_be32(&mmdc->mdscr,  MDSCR_ENABLE_CON_REQ | CMD_LOAD_MODE_REG |
+				CMD_BANK_ADDR_3);
+
+	/* 9c. read calibration */
+	out_be32(&mmdc->mdscr,  CMD_ADDR_MSB_MR_OP(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_PRECHARGE_BANK_OPEN | CMD_BANK_ADDR_0);
+	out_be32(&mmdc->mdscr,  CMD_ADDR_LSB_MR_ADDR(4) | MDSCR_ENABLE_CON_REQ |
+				CMD_LOAD_MODE_REG | CMD_BANK_ADDR_3);
+	out_be32(&mmdc->mppdcmpr2,  MPPDCMPR2_MPR_COMPARE_EN);
+	set_wait_for_bits_clear(&mmdc->mprddlhwctl,
+				MPRDDLHWCTL_AUTO_RD_CALIBRATION_EN,
+				MPRDDLHWCTL_AUTO_RD_CALIBRATION_EN);
+
+	out_be32(&mmdc->mdscr,  MDSCR_ENABLE_CON_REQ | CMD_LOAD_MODE_REG |
+				CMD_BANK_ADDR_3);
+
+	/* 10. configure power-down, self-refresh entry, exit parameters */
+	out_be32(&mmdc->mdpdc, CONFIG_MMDC_MDPDC);
+	out_be32(&mmdc->mapsr, MMDC_MAPSR_PWR_SAV_CTRL_STAT);
+
+	/* 11. ZQ config again? do nothing here */
+
+	/* 12. refresh scheme */
+	set_wait_for_bits_clear(&mmdc->mdref, CONFIG_MMDC_MDREF,
+				MDREF_START_REFRESH);
+
+	/* 13. disable CON_REQ */
+	out_be32(&mmdc->mdscr, MDSCR_DISABLE_CFG_REQ);
+}
diff --git a/include/configs/ls1012afrdm.h b/include/configs/ls1012afrdm.h
index ad81142..3d83d47 100644
--- a/include/configs/ls1012afrdm.h
+++ b/include/configs/ls1012afrdm.h
@@ -9,19 +9,33 @@ 
 
 #include "ls1012a_common.h"
 
+/* DDR */
 #define CONFIG_DIMM_SLOTS_PER_CTLR	1
 #define CONFIG_CHIP_SELECTS_PER_CTRL	1
 #define CONFIG_NR_DRAM_BANKS		2
 #define CONFIG_SYS_SDRAM_SIZE		0x20000000
-
-#define CONFIG_SYS_MMDC_CORE_CONTROL_1		0x04180000
-#define CONFIG_SYS_MMDC_CORE_CONTROL_2		0x84180000
-
+#define CONFIG_CHIP_SELECTS_PER_CTRL	1
 #define CONFIG_CMD_MEMINFO
 #define CONFIG_CMD_MEMTEST
 #define CONFIG_SYS_MEMTEST_START	0x80000000
 #define CONFIG_SYS_MEMTEST_END		0x9fffffff
 
+/* DDR board-specific timing parameters */
+#define CONFIG_MMDC_MDCTL	0x04180000
+#define CONFIG_MMDC_MDPDC	0x00030035
+#define CONFIG_MMDC_MDOTC	0x12554000
+#define CONFIG_MMDC_MDCFG0	0xbabf7954
+#define CONFIG_MMDC_MDCFG1	0xdb328f64
+#define CONFIG_MMDC_MDCFG2	0x01ff00db
+#define CONFIG_MMDC_MDMISC	0x00001680
+#define CONFIG_MMDC_MDREF	0x0f3c8000
+#define CONFIG_MMDC_MDRWD	0x00002000
+#define CONFIG_MMDC_MDOR	0x00bf1023
+#define CONFIG_MMDC_MDASP	0x0000003f
+#define CONFIG_MMDC_MPODTCTRL	0x0000022a
+#define CONFIG_MMDC_MPZQHWCTRL	0xa1390003
+
+
 /*
 * USB
 */
diff --git a/include/configs/ls1012aqds.h b/include/configs/ls1012aqds.h
index 6e31ca0..233ed7e 100644
--- a/include/configs/ls1012aqds.h
+++ b/include/configs/ls1012aqds.h
@@ -9,14 +9,31 @@ 
 
 #include "ls1012a_common.h"
 
-
+/* DDR */
 #define CONFIG_DIMM_SLOTS_PER_CTLR	1
 #define CONFIG_CHIP_SELECTS_PER_CTRL	1
 #define CONFIG_NR_DRAM_BANKS		2
 #define CONFIG_SYS_SDRAM_SIZE		0x40000000
+#define CONFIG_CMD_MEMINFO
+#define CONFIG_CMD_MEMTEST
+#define CONFIG_SYS_MEMTEST_START	0x80000000
+#define CONFIG_SYS_MEMTEST_END		0x9fffffff
+
+/* DDR board-specific timing parameters */
+#define CONFIG_MMDC_MDCTL	0x05180000
+#define CONFIG_MMDC_MDPDC	0x00030035
+#define CONFIG_MMDC_MDOTC	0x12554000
+#define CONFIG_MMDC_MDCFG0	0xbabf7954
+#define CONFIG_MMDC_MDCFG1	0xdb328f64
+#define CONFIG_MMDC_MDCFG2	0x01ff00db
+#define CONFIG_MMDC_MDMISC	0x00001680
+#define CONFIG_MMDC_MDREF	0x0f3c8000
+#define CONFIG_MMDC_MDRWD	0x00002000
+#define CONFIG_MMDC_MDOR	0x00bf1023
+#define CONFIG_MMDC_MDASP	0x0000003f
+#define CONFIG_MMDC_MPODTCTRL	0x0000022a
+#define CONFIG_MMDC_MPZQHWCTRL	0xa1390003
 
-#define CONFIG_SYS_MMDC_CORE_CONTROL_1		0x05180000
-#define CONFIG_SYS_MMDC_CORE_CONTROL_2		0x85180000
 
 /*
  * QIXIS Definitions
diff --git a/include/configs/ls1012ardb.h b/include/configs/ls1012ardb.h
index 6046ab7..b36467a 100644
--- a/include/configs/ls1012ardb.h
+++ b/include/configs/ls1012ardb.h
@@ -9,20 +9,31 @@ 
 
 #include "ls1012a_common.h"
 
-
+/* DDR */
 #define CONFIG_DIMM_SLOTS_PER_CTLR	1
 #define CONFIG_CHIP_SELECTS_PER_CTRL	1
 #define CONFIG_NR_DRAM_BANKS		2
 #define CONFIG_SYS_SDRAM_SIZE		0x40000000
-
-#define CONFIG_SYS_MMDC_CORE_CONTROL_1		0x05180000
-#define CONFIG_SYS_MMDC_CORE_CONTROL_2		0x85180000
-
 #define CONFIG_CMD_MEMINFO
 #define CONFIG_CMD_MEMTEST
 #define CONFIG_SYS_MEMTEST_START	0x80000000
 #define CONFIG_SYS_MEMTEST_END		0x9fffffff
 
+/* DDR board-specific timing parameters */
+#define CONFIG_MMDC_MDCTL	0x05180000
+#define CONFIG_MMDC_MDPDC	0x00030035
+#define CONFIG_MMDC_MDOTC	0x12554000
+#define CONFIG_MMDC_MDCFG0	0xbabf7954
+#define CONFIG_MMDC_MDCFG1	0xdb328f64
+#define CONFIG_MMDC_MDCFG2	0x01ff00db
+#define CONFIG_MMDC_MDMISC	0x00001680
+#define CONFIG_MMDC_MDREF	0x0f3c8000
+#define CONFIG_MMDC_MDRWD	0x00002000
+#define CONFIG_MMDC_MDOR	0x00bf1023
+#define CONFIG_MMDC_MDASP	0x0000003f
+#define CONFIG_MMDC_MPODTCTRL	0x0000022a
+#define CONFIG_MMDC_MPZQHWCTRL	0xa1390003
+
 /*
 * USB
 */
diff --git a/include/fsl_mmdc.h b/include/fsl_mmdc.h
index a939d89..1d09ff4 100644
--- a/include/fsl_mmdc.h
+++ b/include/fsl_mmdc.h
@@ -7,63 +7,39 @@ 
 #ifndef FSL_MMDC_H
 #define FSL_MMDC_H
 
-#define CONFIG_SYS_MMDC_CORE_ODT_TIMING		0x12554000
-#define CONFIG_SYS_MMDC_CORE_TIMING_CFG_0	0xbabf7954
-#define CONFIG_SYS_MMDC_CORE_TIMING_CFG_1	0xff328f64
-#define CONFIG_SYS_MMDC_CORE_TIMING_CFG_2	0x01ff00db
-
-#define CONFIG_SYS_MMDC_CORE_MISC		0x00001680
-#define CONFIG_SYS_MMDC_PHY_MEASURE_UNIT	0x00000800
-#define CONFIG_SYS_MMDC_CORE_RDWR_CMD_DELAY	0x00002000
-#define CONFIG_SYS_MMDC_PHY_ODT_CTRL		0x0000022a
-
-#define CONFIG_SYS_MMDC_CORE_OUT_OF_RESET_DELAY	0x00bf1023
-
-#define CONFIG_SYS_MMDC_CORE_ADDR_PARTITION	0x0000007f
-
-#define CONFIG_SYS_MMDC_PHY_ZQ_HW_CTRL		0xa1390003
-
-#define	FORCE_ZQ_AUTO_CALIBRATION		(0x1 << 16)
-
-/* PHY Write Leveling Configuration and Error Status (MPWLGCR) */
-#define WR_LVL_HW_EN				0x00000001
+/* 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 MPR_COMPARE_EN				0x00000001
+#define MPPDCMPR2_MPR_COMPARE_EN	(1 << 0)
 
-#define CONFIG_SYS_MMDC_PHY_RD_DLY_LINES_CFG	0x40404040
 
 /* MMDC PHY Read DQS gating control register 0 (MPDGCTRL0) */
-#define AUTO_RD_DQS_GATING_CALIBRATION_EN	0x10000000
+#define AUTO_RD_DQS_GATING_CALIBRATION_EN	(1 << 28)
 
 /* MMDC PHY Read Delay HW Calibration Control Register (MPRDDLHWCTL) */
-#define AUTO_RD_CALIBRATION_EN			0x00000010
-
-#define CONFIG_SYS_MMDC_CORE_PWR_DOWN_CTRL	0x00030035
+#define MPRDDLHWCTL_AUTO_RD_CALIBRATION_EN	(1 << 4)
 
-#define CONFIG_SYS_MMDC_CORE_PWR_SAV_CTRL_STAT	0x00001067
+/* MMDC Core Power Saving Control and Status Register (MMDC_MAPSR) */
+#define MMDC_MAPSR_PWR_SAV_CTRL_STAT	0x00001067
 
-#define CONFIG_SYS_MMDC_CORE_REFRESH_CTL	0x0f3c8000
-
-#define START_REFRESH				0x00000001
+/* 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 DISABLE_CFG_REQ		0x0
-#define CONFIGURATION_REQ	(0x1  << 15)
-#define WL_EN			(0x1  << 9)
-
-#define	CMD_NORMAL		(0x0 << 4)
-#define	CMD_PRECHARGE		(0x1 << 4)
-#define	CMD_AUTO_REFRESH	(0x2 << 4)
-#define	CMD_LOAD_MODE_REG	(0x3 << 4)
-#define	CMD_ZQ_CALIBRATION	(0x4 << 4)
-#define	CMD_PRECHARGE_BANK_OPEN	(0x5 << 4)
-#define	CMD_MRR			(0x6 << 4)
-
+#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
@@ -73,8 +49,22 @@ 
 #define CMD_BANK_ADDR_6		0x6
 #define CMD_BANK_ADDR_7		0x7
 
+/* MMDC Core Control Register (MDCTL) */
+#define MDCTL_SDE0		(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_p_regs {
+struct mmdc_regs {
 	u32 mdctl;
 	u32 mdpdc;
 	u32 mdotc;
@@ -120,7 +110,10 @@  struct mmdc_p_regs {
 	u32 mprddqby1dl;
 	u32 mprddqby2dl;
 	u32 mprddqby3dl;
-	u32 res5[4];
+	u32 mpwrdqby0dl;
+	u32 mpwrdqby1dl;
+	u32 mpwrdqby2dl;
+	u32 mpwrdqby3dl;
 	u32 mpdgctrl0;
 	u32 mpdgctrl1;
 	u32 mpdgdlst0;
@@ -157,4 +150,10 @@  struct mmdc_p_regs {
 	u32 mpdccr;
 };
 
+void mmdc_init(void);
+
+#if !defined(CONFIG_MMDC_MDCTL)
+#error Must configure board-specific timing CONFIG_MMDC_* in <board>.h for MMDC
+#endif
+
 #endif /* FSL_MMDC_H */