arch/blackfin/include/asm/mem_init.h - linux - Git at Google

 /*
  * arch/blackfin/include/asm/mem_init.h - reprogram clocks / memory
  *
  * Copyright 2004-2008 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later.
  */

 #ifndef __MEM_INIT_H__
 #define __MEM_INIT_H__

 #if defined(EBIU_SDGCTL)
 #if defined(CONFIG_MEM_MT48LC16M16A2TG_75) || \
     defined(CONFIG_MEM_MT48LC64M4A2FB_7E) || \
     defined(CONFIG_MEM_MT48LC16M8A2TG_75) || \
     defined(CONFIG_MEM_MT48LC32M8A2_75) || \
     defined(CONFIG_MEM_MT48LC8M32B2B5_7) || \
     defined(CONFIG_MEM_MT48LC32M16A2TG_75) || \
     defined(CONFIG_MEM_MT48LC32M8A2_75)
 #if (CONFIG_SCLK_HZ > 119402985)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_7
 #define SDRAM_tRAS_num  7
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_6
 #define SDRAM_tRAS_num  6
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_5
 #define SDRAM_tRAS_num  5
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_4
 #define SDRAM_tRAS_num  4
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_3
 #define SDRAM_tRAS_num  3
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_4
 #define SDRAM_tRAS_num  4
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_3
 #define SDRAM_tRAS_num  3
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_2
 #define SDRAM_tRAS_num  2
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ <= 29850746)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_1
 #define SDRAM_tRAS_num  1
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #endif

 /*
  * The BF526-EZ-Board changed SDRAM chips between revisions,
  * so we use below timings to accommodate both.
  */
 #if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
 #if (CONFIG_SCLK_HZ > 119402985)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_8
 #define SDRAM_tRAS_num  8
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_7
 #define SDRAM_tRAS_num  7
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_6
 #define SDRAM_tRAS_num  6
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_5
 #define SDRAM_tRAS_num  5
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_4
 #define SDRAM_tRAS_num  4
 #define SDRAM_tRCD      TRCD_2
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_4
 #define SDRAM_tRAS_num  4
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
 #define SDRAM_tRP       TRP_2
 #define SDRAM_tRP_num   2
 #define SDRAM_tRAS      TRAS_3
 #define SDRAM_tRAS_num  3
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_3
 #define SDRAM_tRAS_num  3
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #if (CONFIG_SCLK_HZ <= 29850746)
 #define SDRAM_tRP       TRP_1
 #define SDRAM_tRP_num   1
 #define SDRAM_tRAS      TRAS_2
 #define SDRAM_tRAS_num  2
 #define SDRAM_tRCD      TRCD_1
 #define SDRAM_tWR       TWR_2
 #endif
 #endif

 #if defined(CONFIG_MEM_MT48LC16M8A2TG_75) || \
     defined(CONFIG_MEM_MT48LC8M32B2B5_7)
   /*SDRAM INFORMATION: */
 #define SDRAM_Tref  64		/* Refresh period in milliseconds   */
 #define SDRAM_NRA   4096	/* Number of row addresses in SDRAM */
 #define SDRAM_CL    CL_3
 #endif

 #if defined(CONFIG_MEM_MT48LC32M8A2_75) || \
     defined(CONFIG_MEM_MT48LC64M4A2FB_7E) || \
     defined(CONFIG_MEM_MT48LC32M16A2TG_75) || \
     defined(CONFIG_MEM_MT48LC16M16A2TG_75) || \
     defined(CONFIG_MEM_MT48LC32M8A2_75)
   /*SDRAM INFORMATION: */
 #define SDRAM_Tref  64		/* Refresh period in milliseconds   */
 #define SDRAM_NRA   8192	/* Number of row addresses in SDRAM */
 #define SDRAM_CL    CL_3
 #endif

 #if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
   /*SDRAM INFORMATION: */
 #define SDRAM_Tref  64		/* Refresh period in milliseconds   */
 #define SDRAM_NRA   8192	/* Number of row addresses in SDRAM */
 #define SDRAM_CL    CL_2
 #endif


 #ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
 /* Equation from section 17 (p17-46) of BF533 HRM */
 #define mem_SDRRC       (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)

 /* Enable SCLK Out */
 #define mem_SDGCTL        (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS)
 #else
 #define mem_SDRRC 	CONFIG_MEM_SDRRC
 #define mem_SDGCTL	CONFIG_MEM_SDGCTL
 #endif
 #endif


 #if defined(EBIU_DDRCTL0)
 #define MIN_DDR_SCLK(x)	(x*(CONFIG_SCLK_HZ/1000/1000)/1000 + 1)
 #define MAX_DDR_SCLK(x)	(x*(CONFIG_SCLK_HZ/1000/1000)/1000)
 #define DDR_CLK_HZ(x)	(1000*1000*1000/x)

 #if defined(CONFIG_MEM_MT46V32M16_6T)
 #define DDR_SIZE	DEVSZ_512
 #define DDR_WIDTH	DEVWD_16
 #define DDR_MAX_tCK	13

 #define DDR_tRC		DDR_TRC(MIN_DDR_SCLK(60))
 #define DDR_tRAS	DDR_TRAS(MIN_DDR_SCLK(42))
 #define DDR_tRP		DDR_TRP(MIN_DDR_SCLK(15))
 #define DDR_tRFC	DDR_TRFC(MIN_DDR_SCLK(72))
 #define DDR_tREFI	DDR_TREFI(MAX_DDR_SCLK(7800))

 #define DDR_tRCD	DDR_TRCD(MIN_DDR_SCLK(15))
 #define DDR_tWTR	DDR_TWTR(1)
 #define DDR_tMRD	DDR_TMRD(MIN_DDR_SCLK(12))
 #define DDR_tWR		DDR_TWR(MIN_DDR_SCLK(15))
 #endif

 #if defined(CONFIG_MEM_MT46V32M16_5B)
 #define DDR_SIZE	DEVSZ_512
 #define DDR_WIDTH	DEVWD_16
 #define DDR_MAX_tCK	13

 #define DDR_tRC		DDR_TRC(MIN_DDR_SCLK(55))
 #define DDR_tRAS	DDR_TRAS(MIN_DDR_SCLK(40))
 #define DDR_tRP		DDR_TRP(MIN_DDR_SCLK(15))
 #define DDR_tRFC	DDR_TRFC(MIN_DDR_SCLK(70))
 #define DDR_tREFI	DDR_TREFI(MAX_DDR_SCLK(7800))

 #define DDR_tRCD	DDR_TRCD(MIN_DDR_SCLK(15))
 #define DDR_tWTR	DDR_TWTR(2)
 #define DDR_tMRD	DDR_TMRD(MIN_DDR_SCLK(10))
 #define DDR_tWR		DDR_TWR(MIN_DDR_SCLK(15))
 #endif

 #if (CONFIG_SCLK_HZ < DDR_CLK_HZ(DDR_MAX_tCK))
 # error "CONFIG_SCLK_HZ is too small (<DDR_CLK_HZ(DDR_MAX_tCK) Hz)."
 #elif(CONFIG_SCLK_HZ <= 133333333)
 # define	DDR_CL		CL_2
 #else
 # error "CONFIG_SCLK_HZ is too large (>133333333 Hz)."
 #endif

 #ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
 #define mem_DDRCTL0	(DDR_tRP | DDR_tRAS | DDR_tRC | DDR_tRFC | DDR_tREFI)
 #define mem_DDRCTL1	(DDR_DATWIDTH | EXTBANK_1 | DDR_SIZE | DDR_WIDTH | DDR_tWTR \
 			| DDR_tMRD | DDR_tWR | DDR_tRCD)
 #define mem_DDRCTL2	DDR_CL
 #else
 #define mem_DDRCTL0	CONFIG_MEM_DDRCTL0
 #define mem_DDRCTL1	CONFIG_MEM_DDRCTL1
 #define mem_DDRCTL2	CONFIG_MEM_DDRCTL2
 #endif
 #endif

 #if defined CONFIG_CLKIN_HALF
 #define CLKIN_HALF       1
 #else
 #define CLKIN_HALF       0
 #endif

 #if defined CONFIG_PLL_BYPASS
 #define PLL_BYPASS      1
 #else
 #define PLL_BYPASS       0
 #endif

 #ifdef CONFIG_BF60x

 /* DMC status bits */
 #define IDLE			0x1
 #define MEMINITDONE		0x4
 #define SRACK			0x8
 #define PDACK			0x10
 #define DPDACK			0x20
 #define DLLCALDONE		0x2000
 #define PENDREF			0xF0000
 #define PHYRDPHASE		0xF00000
 #define PHYRDPHASE_OFFSET	20

 /* DMC control bits */
 #define LPDDR			0x2
 #define INIT			0x4
 #define	SRREQ			0x8
 #define PDREQ			0x10
 #define DPDREQ			0x20
 #define PREC			0x40
 #define ADDRMODE		0x100
 #define RDTOWR			0xE00
 #define PPREF			0x1000
 #define DLLCAL			0x2000

 /* DMC DLL control bits */
 #define DLLCALRDCNT		0xFF
 #define DATACYC			0xF00
 #define DATACYC_OFFSET		8

 /* CGU Divisor bits */
 #define CSEL_OFFSET		0
 #define S0SEL_OFFSET		5
 #define SYSSEL_OFFSET		8
 #define S1SEL_OFFSET		13
 #define DSEL_OFFSET		16
 #define OSEL_OFFSET		22
 #define ALGN			0x20000000
 #define UPDT			0x40000000
 #define LOCK			0x80000000

 /* CGU Status bits */
 #define PLLEN			0x1
 #define PLLBP			0x2
 #define PLOCK			0x4
 #define CLKSALGN		0x8

 /* CGU Control bits */
 #define MSEL_MASK		0x7F00
 #define DF_MASK			0x1

 struct ddr_config {
 	u32 ddr_clk;
 	u32 dmc_ddrctl;
 	u32 dmc_effctl;
 	u32 dmc_ddrcfg;
 	u32 dmc_ddrtr0;
 	u32 dmc_ddrtr1;
 	u32 dmc_ddrtr2;
 	u32 dmc_ddrmr;
 	u32 dmc_ddrmr1;
 };

 #if defined(CONFIG_MEM_MT47H64M16)
 static struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = {
 	[0] = {
 		.ddr_clk    = 125,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20705212,
 		.dmc_ddrtr1 = 0x201003CF,
 		.dmc_ddrtr2 = 0x00320107,
 		.dmc_ddrmr  = 0x00000422,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[1] = {
 		.ddr_clk    = 133,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20806313,
 		.dmc_ddrtr1 = 0x2013040D,
 		.dmc_ddrtr2 = 0x00320108,
 		.dmc_ddrmr  = 0x00000632,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[2] = {
 		.ddr_clk    = 150,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20A07323,
 		.dmc_ddrtr1 = 0x20160492,
 		.dmc_ddrtr2 = 0x00320209,
 		.dmc_ddrmr  = 0x00000632,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[3] = {
 		.ddr_clk    = 166,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20A07323,
 		.dmc_ddrtr1 = 0x2016050E,
 		.dmc_ddrtr2 = 0x00320209,
 		.dmc_ddrmr  = 0x00000632,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[4] = {
 		.ddr_clk    = 200,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20a07323,
 		.dmc_ddrtr1 = 0x2016050f,
 		.dmc_ddrtr2 = 0x00320509,
 		.dmc_ddrmr  = 0x00000632,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[5] = {
 		.ddr_clk    = 225,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20E0A424,
 		.dmc_ddrtr1 = 0x302006DB,
 		.dmc_ddrtr2 = 0x0032020D,
 		.dmc_ddrmr  = 0x00000842,
 		.dmc_ddrmr1 = 0x4,
 	},
 	[6] = {
 		.ddr_clk    = 250,
 		.dmc_ddrctl = 0x00000904,
 		.dmc_effctl = 0x004400C0,
 		.dmc_ddrcfg = 0x00000422,
 		.dmc_ddrtr0 = 0x20E0A424,
 		.dmc_ddrtr1 = 0x3020079E,
 		.dmc_ddrtr2 = 0x0032050D,
 		.dmc_ddrmr  = 0x00000842,
 		.dmc_ddrmr1 = 0x4,
 	},
 };
 #endif

 static inline void dmc_enter_self_refresh(void)
 {
 	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
 		bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ);
 		while (!(bfin_read_DMC0_STAT() & SRACK))
 			continue;
 	}
 }

 static inline void dmc_exit_self_refresh(void)
 {
 	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
 		bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
 		while (bfin_read_DMC0_STAT() & SRACK)
 			continue;
 	}
 }

 static inline void init_cgu(u32 cgu_div, u32 cgu_ctl)
 {
 	dmc_enter_self_refresh();

 	/* Don't set the same value of MSEL and DF to CGU_CTL */
 	if ((bfin_read32(CGU0_CTL) & (MSEL_MASK | DF_MASK))
 		!= cgu_ctl) {
 		bfin_write32(CGU0_DIV, cgu_div);
 		bfin_write32(CGU0_CTL, cgu_ctl);
 		while ((bfin_read32(CGU0_STAT) & (CLKSALGN | PLLBP)) ||
 			!(bfin_read32(CGU0_STAT) & PLOCK))
 			continue;
 	}

 	bfin_write32(CGU0_DIV, cgu_div | UPDT);
 	while (bfin_read32(CGU0_STAT) & CLKSALGN)
 		continue;

 	dmc_exit_self_refresh();
 }

 static inline void init_dmc(u32 dmc_clk)
 {
 	int i, dlldatacycle, dll_ctl;

 	for (i = 0; i < 7; i++) {
 		if (ddr_config_table[i].ddr_clk == dmc_clk) {
 			bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
 			bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
 			bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
 			bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
 			bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
 			bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
 			bfin_write_DMC0_EFFCTL(ddr_config_table[i].dmc_effctl);
 			bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
 			break;
 		}
 	}

 	while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
 		continue;

 	dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >> PHYRDPHASE_OFFSET;
 	dll_ctl = bfin_read_DMC0_DLLCTL();
 	dll_ctl &= ~DATACYC;
 	bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET));

 	while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
 		continue;
 }
 #endif

 #endif /*__MEM_INIT_H__*/
	/*
	* arch/blackfin/include/asm/mem_init.h - reprogram clocks / memory
	*
	* Copyright 2004-2008 Analog Devices Inc.
	*
	* Licensed under the GPL-2 or later.
	*/

	#ifndef __MEM_INIT_H__
	#define __MEM_INIT_H__

	#if defined(EBIU_SDGCTL)
	#if defined(CONFIG_MEM_MT48LC16M16A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC64M4A2FB_7E) \|\| \
	defined(CONFIG_MEM_MT48LC16M8A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC32M8A2_75) \|\| \
	defined(CONFIG_MEM_MT48LC8M32B2B5_7) \|\| \
	defined(CONFIG_MEM_MT48LC32M16A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC32M8A2_75)
	#if (CONFIG_SCLK_HZ > 119402985)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_7
	#define SDRAM_tRAS_num 7
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_6
	#define SDRAM_tRAS_num 6
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_5
	#define SDRAM_tRAS_num 5
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_4
	#define SDRAM_tRAS_num 4
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_3
	#define SDRAM_tRAS_num 3
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_4
	#define SDRAM_tRAS_num 4
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_3
	#define SDRAM_tRAS_num 3
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_2
	#define SDRAM_tRAS_num 2
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ <= 29850746)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_1
	#define SDRAM_tRAS_num 1
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#endif

	/*
	* The BF526-EZ-Board changed SDRAM chips between revisions,
	* so we use below timings to accommodate both.
	*/
	#if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
	#if (CONFIG_SCLK_HZ > 119402985)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_8
	#define SDRAM_tRAS_num 8
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_7
	#define SDRAM_tRAS_num 7
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_6
	#define SDRAM_tRAS_num 6
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_5
	#define SDRAM_tRAS_num 5
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_4
	#define SDRAM_tRAS_num 4
	#define SDRAM_tRCD TRCD_2
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_4
	#define SDRAM_tRAS_num 4
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
	#define SDRAM_tRP TRP_2
	#define SDRAM_tRP_num 2
	#define SDRAM_tRAS TRAS_3
	#define SDRAM_tRAS_num 3
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_3
	#define SDRAM_tRAS_num 3
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#if (CONFIG_SCLK_HZ <= 29850746)
	#define SDRAM_tRP TRP_1
	#define SDRAM_tRP_num 1
	#define SDRAM_tRAS TRAS_2
	#define SDRAM_tRAS_num 2
	#define SDRAM_tRCD TRCD_1
	#define SDRAM_tWR TWR_2
	#endif
	#endif

	#if defined(CONFIG_MEM_MT48LC16M8A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC8M32B2B5_7)
	/SDRAM INFORMATION: /
	#define SDRAM_Tref 64 /* Refresh period in milliseconds */
	#define SDRAM_NRA 4096 /* Number of row addresses in SDRAM */
	#define SDRAM_CL CL_3
	#endif

	#if defined(CONFIG_MEM_MT48LC32M8A2_75) \|\| \
	defined(CONFIG_MEM_MT48LC64M4A2FB_7E) \|\| \
	defined(CONFIG_MEM_MT48LC32M16A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC16M16A2TG_75) \|\| \
	defined(CONFIG_MEM_MT48LC32M8A2_75)
	/SDRAM INFORMATION: /
	#define SDRAM_Tref 64 /* Refresh period in milliseconds */
	#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
	#define SDRAM_CL CL_3
	#endif

	#if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
	/SDRAM INFORMATION: /
	#define SDRAM_Tref 64 /* Refresh period in milliseconds */
	#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
	#define SDRAM_CL CL_2
	#endif


	#ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
	/* Equation from section 17 (p17-46) of BF533 HRM */
	#define mem_SDRRC (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)

	/* Enable SCLK Out */
	#define mem_SDGCTL (SCTLE \| SDRAM_CL \| SDRAM_tRAS \| SDRAM_tRP \| SDRAM_tRCD \| SDRAM_tWR \| PSS)
	#else
	#define mem_SDRRC CONFIG_MEM_SDRRC
	#define mem_SDGCTL CONFIG_MEM_SDGCTL
	#endif
	#endif


	#if defined(EBIU_DDRCTL0)
	#define MIN_DDR_SCLK(x) (x*(CONFIG_SCLK_HZ/1000/1000)/1000 + 1)
	#define MAX_DDR_SCLK(x) (x*(CONFIG_SCLK_HZ/1000/1000)/1000)
	#define DDR_CLK_HZ(x) (100010001000/x)

	#if defined(CONFIG_MEM_MT46V32M16_6T)
	#define DDR_SIZE DEVSZ_512
	#define DDR_WIDTH DEVWD_16
	#define DDR_MAX_tCK 13

	#define DDR_tRC DDR_TRC(MIN_DDR_SCLK(60))
	#define DDR_tRAS DDR_TRAS(MIN_DDR_SCLK(42))
	#define DDR_tRP DDR_TRP(MIN_DDR_SCLK(15))
	#define DDR_tRFC DDR_TRFC(MIN_DDR_SCLK(72))
	#define DDR_tREFI DDR_TREFI(MAX_DDR_SCLK(7800))

	#define DDR_tRCD DDR_TRCD(MIN_DDR_SCLK(15))
	#define DDR_tWTR DDR_TWTR(1)
	#define DDR_tMRD DDR_TMRD(MIN_DDR_SCLK(12))
	#define DDR_tWR DDR_TWR(MIN_DDR_SCLK(15))
	#endif

	#if defined(CONFIG_MEM_MT46V32M16_5B)
	#define DDR_SIZE DEVSZ_512
	#define DDR_WIDTH DEVWD_16
	#define DDR_MAX_tCK 13

	#define DDR_tRC DDR_TRC(MIN_DDR_SCLK(55))
	#define DDR_tRAS DDR_TRAS(MIN_DDR_SCLK(40))
	#define DDR_tRP DDR_TRP(MIN_DDR_SCLK(15))
	#define DDR_tRFC DDR_TRFC(MIN_DDR_SCLK(70))
	#define DDR_tREFI DDR_TREFI(MAX_DDR_SCLK(7800))

	#define DDR_tRCD DDR_TRCD(MIN_DDR_SCLK(15))
	#define DDR_tWTR DDR_TWTR(2)
	#define DDR_tMRD DDR_TMRD(MIN_DDR_SCLK(10))
	#define DDR_tWR DDR_TWR(MIN_DDR_SCLK(15))
	#endif

	#if (CONFIG_SCLK_HZ < DDR_CLK_HZ(DDR_MAX_tCK))
	# error "CONFIG_SCLK_HZ is too small (<DDR_CLK_HZ(DDR_MAX_tCK) Hz)."
	#elif(CONFIG_SCLK_HZ <= 133333333)
	# define DDR_CL CL_2
	#else
	# error "CONFIG_SCLK_HZ is too large (>133333333 Hz)."
	#endif

	#ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
	#define mem_DDRCTL0 (DDR_tRP \| DDR_tRAS \| DDR_tRC \| DDR_tRFC \| DDR_tREFI)
	#define mem_DDRCTL1 (DDR_DATWIDTH \| EXTBANK_1 \| DDR_SIZE \| DDR_WIDTH \| DDR_tWTR \
	\| DDR_tMRD \| DDR_tWR \| DDR_tRCD)
	#define mem_DDRCTL2 DDR_CL
	#else
	#define mem_DDRCTL0 CONFIG_MEM_DDRCTL0
	#define mem_DDRCTL1 CONFIG_MEM_DDRCTL1
	#define mem_DDRCTL2 CONFIG_MEM_DDRCTL2
	#endif
	#endif

	#if defined CONFIG_CLKIN_HALF
	#define CLKIN_HALF 1
	#else
	#define CLKIN_HALF 0
	#endif

	#if defined CONFIG_PLL_BYPASS
	#define PLL_BYPASS 1
	#else
	#define PLL_BYPASS 0
	#endif

	#ifdef CONFIG_BF60x

	/* DMC status bits */
	#define IDLE 0x1
	#define MEMINITDONE 0x4
	#define SRACK 0x8
	#define PDACK 0x10
	#define DPDACK 0x20
	#define DLLCALDONE 0x2000
	#define PENDREF 0xF0000
	#define PHYRDPHASE 0xF00000
	#define PHYRDPHASE_OFFSET 20

	/* DMC control bits */
	#define LPDDR 0x2
	#define INIT 0x4
	#define SRREQ 0x8
	#define PDREQ 0x10
	#define DPDREQ 0x20
	#define PREC 0x40
	#define ADDRMODE 0x100
	#define RDTOWR 0xE00
	#define PPREF 0x1000
	#define DLLCAL 0x2000

	/* DMC DLL control bits */
	#define DLLCALRDCNT 0xFF
	#define DATACYC 0xF00
	#define DATACYC_OFFSET 8

	/* CGU Divisor bits */
	#define CSEL_OFFSET 0
	#define S0SEL_OFFSET 5
	#define SYSSEL_OFFSET 8
	#define S1SEL_OFFSET 13
	#define DSEL_OFFSET 16
	#define OSEL_OFFSET 22
	#define ALGN 0x20000000
	#define UPDT 0x40000000
	#define LOCK 0x80000000

	/* CGU Status bits */
	#define PLLEN 0x1
	#define PLLBP 0x2
	#define PLOCK 0x4
	#define CLKSALGN 0x8

	/* CGU Control bits */
	#define MSEL_MASK 0x7F00
	#define DF_MASK 0x1

	struct ddr_config {
	u32 ddr_clk;
	u32 dmc_ddrctl;
	u32 dmc_effctl;
	u32 dmc_ddrcfg;
	u32 dmc_ddrtr0;
	u32 dmc_ddrtr1;
	u32 dmc_ddrtr2;
	u32 dmc_ddrmr;
	u32 dmc_ddrmr1;
	};

	#if defined(CONFIG_MEM_MT47H64M16)
	static struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = {
	[0] = {
	.ddr_clk = 125,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20705212,
	.dmc_ddrtr1 = 0x201003CF,
	.dmc_ddrtr2 = 0x00320107,
	.dmc_ddrmr = 0x00000422,
	.dmc_ddrmr1 = 0x4,
	},
	[1] = {
	.ddr_clk = 133,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20806313,
	.dmc_ddrtr1 = 0x2013040D,
	.dmc_ddrtr2 = 0x00320108,
	.dmc_ddrmr = 0x00000632,
	.dmc_ddrmr1 = 0x4,
	},
	[2] = {
	.ddr_clk = 150,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20A07323,
	.dmc_ddrtr1 = 0x20160492,
	.dmc_ddrtr2 = 0x00320209,
	.dmc_ddrmr = 0x00000632,
	.dmc_ddrmr1 = 0x4,
	},
	[3] = {
	.ddr_clk = 166,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20A07323,
	.dmc_ddrtr1 = 0x2016050E,
	.dmc_ddrtr2 = 0x00320209,
	.dmc_ddrmr = 0x00000632,
	.dmc_ddrmr1 = 0x4,
	},
	[4] = {
	.ddr_clk = 200,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20a07323,
	.dmc_ddrtr1 = 0x2016050f,
	.dmc_ddrtr2 = 0x00320509,
	.dmc_ddrmr = 0x00000632,
	.dmc_ddrmr1 = 0x4,
	},
	[5] = {
	.ddr_clk = 225,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20E0A424,
	.dmc_ddrtr1 = 0x302006DB,
	.dmc_ddrtr2 = 0x0032020D,
	.dmc_ddrmr = 0x00000842,
	.dmc_ddrmr1 = 0x4,
	},
	[6] = {
	.ddr_clk = 250,
	.dmc_ddrctl = 0x00000904,
	.dmc_effctl = 0x004400C0,
	.dmc_ddrcfg = 0x00000422,
	.dmc_ddrtr0 = 0x20E0A424,
	.dmc_ddrtr1 = 0x3020079E,
	.dmc_ddrtr2 = 0x0032050D,
	.dmc_ddrmr = 0x00000842,
	.dmc_ddrmr1 = 0x4,
	},
	};
	#endif

	static inline void dmc_enter_self_refresh(void)
	{
	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
	bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() \| SRREQ);
	while (!(bfin_read_DMC0_STAT() & SRACK))
	continue;
	}
	}

	static inline void dmc_exit_self_refresh(void)
	{
	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
	bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
	while (bfin_read_DMC0_STAT() & SRACK)
	continue;
	}
	}

	static inline void init_cgu(u32 cgu_div, u32 cgu_ctl)
	{
	dmc_enter_self_refresh();

	/* Don't set the same value of MSEL and DF to CGU_CTL */
	if ((bfin_read32(CGU0_CTL) & (MSEL_MASK \| DF_MASK))
	!= cgu_ctl) {
	bfin_write32(CGU0_DIV, cgu_div);
	bfin_write32(CGU0_CTL, cgu_ctl);
	while ((bfin_read32(CGU0_STAT) & (CLKSALGN \| PLLBP)) \|\|
	!(bfin_read32(CGU0_STAT) & PLOCK))
	continue;
	}

	bfin_write32(CGU0_DIV, cgu_div \| UPDT);
	while (bfin_read32(CGU0_STAT) & CLKSALGN)
	continue;

	dmc_exit_self_refresh();
	}

	static inline void init_dmc(u32 dmc_clk)
	{
	int i, dlldatacycle, dll_ctl;

	for (i = 0; i < 7; i++) {
	if (ddr_config_table[i].ddr_clk == dmc_clk) {
	bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
	bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
	bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
	bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
	bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
	bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
	bfin_write_DMC0_EFFCTL(ddr_config_table[i].dmc_effctl);
	bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
	break;
	}
	}

	while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
	continue;

	dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >> PHYRDPHASE_OFFSET;
	dll_ctl = bfin_read_DMC0_DLLCTL();
	dll_ctl &= ~DATACYC;
	bfin_write_DMC0_DLLCTL(dll_ctl \| (dlldatacycle << DATACYC_OFFSET));

	while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
	continue;
	}
	#endif

	#endif /__MEM_INIT_H__/