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Add DDR3 support for AM335x-EVM (Version 1.5A) 

AM335x EVM 1.5A uses Micron MT41J512M8RH-125 SDRAM 4Gb (512Mx8) as the
DDR3 chip.

[Hebbar Gururaja <gururaja.hebbar@ti.com>]
	- Resolve merge conflict while rebasing. File structure is
	  changed in the mainline. So re-arrange the code accordingly.
	- Update commit message to reflect the DDR3 part number

Signed-off-by: Jeff Lance <j-lance1@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
This commit is contained in:
Jeff Lance 2013-01-14 05:32:20 +00:00 committed by Tom Rini
parent 3ec36b34fe
commit 13526f7157
2 changed files with 57 additions and 0 deletions
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16
arch/arm/include/asm/arch-am33xx/ddr_defs.h
View File

@ -82,6 +82,22 @@
#define MT41J256M8HX15E_PHY_FIFO_WE 0x100
#define MT41J256M8HX15E_IOCTRL_VALUE 0x18B
/* Micron MT41J512M8RH-125 on EVM v1.5 */
#define MT41J512M8RH125_EMIF_READ_LATENCY 0x06
#define MT41J512M8RH125_EMIF_TIM1 0x0888A39B
#define MT41J512M8RH125_EMIF_TIM2 0x26517FDA
#define MT41J512M8RH125_EMIF_TIM3 0x501F84EF
#define MT41J512M8RH125_EMIF_SDCFG 0x61C04BB2
#define MT41J512M8RH125_EMIF_SDREF 0x0000093B
#define MT41J512M8RH125_ZQ_CFG 0x50074BE4
#define MT41J512M8RH125_DLL_LOCK_DIFF 0x1
#define MT41J512M8RH125_RATIO 0x80
#define MT41J512M8RH125_INVERT_CLKOUT 0x0
#define MT41J512M8RH125_RD_DQS 0x3B
#define MT41J512M8RH125_WR_DQS 0x3C
#define MT41J512M8RH125_PHY_FIFO_WE 0xA5
#define MT41J512M8RH125_PHY_WR_DATA 0x74
#define MT41J512M8RH125_IOCTRL_VALUE 0x18B
/**
* Configure SDRAM

41
board/ti/am335x/board.c
View File

@ -73,6 +73,12 @@ static inline int board_is_idk(void)
return !strncmp(header.config, "SKU#02", 6);
}
int board_is_evm_15_or_later(void)
{
return (!strncmp("A33515BB", header.name, 8) &&
strncmp("1.5", header.version, 3) <= 0);
}
/*
* Read header information from EEPROM into global structure.
*/
@ -197,6 +203,14 @@ static const struct ddr_data ddr3_data = {
.datadldiff0 = PHY_DLL_LOCK_DIFF,
};
static const struct ddr_data ddr3_evm_data = {
.datardsratio0 = MT41J512M8RH125_RD_DQS,
.datawdsratio0 = MT41J512M8RH125_WR_DQS,
.datafwsratio0 = MT41J512M8RH125_PHY_FIFO_WE,
.datawrsratio0 = MT41J512M8RH125_PHY_WR_DATA,
.datadldiff0 = PHY_DLL_LOCK_DIFF,
};
static const struct cmd_control ddr3_cmd_ctrl_data = {
.cmd0csratio = MT41J128MJT125_RATIO,
.cmd0dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
@ -211,6 +225,20 @@ static const struct cmd_control ddr3_cmd_ctrl_data = {
.cmd2iclkout = MT41J128MJT125_INVERT_CLKOUT,
};
static const struct cmd_control ddr3_evm_cmd_ctrl_data = {
.cmd0csratio = MT41J512M8RH125_RATIO,
.cmd0dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
.cmd0iclkout = MT41J512M8RH125_INVERT_CLKOUT,
.cmd1csratio = MT41J512M8RH125_RATIO,
.cmd1dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
.cmd1iclkout = MT41J512M8RH125_INVERT_CLKOUT,
.cmd2csratio = MT41J512M8RH125_RATIO,
.cmd2dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
.cmd2iclkout = MT41J512M8RH125_INVERT_CLKOUT,
};
static struct emif_regs ddr3_emif_reg_data = {
.sdram_config = MT41J128MJT125_EMIF_SDCFG,
.ref_ctrl = MT41J128MJT125_EMIF_SDREF,
@ -220,6 +248,16 @@ static struct emif_regs ddr3_emif_reg_data = {
.zq_config = MT41J128MJT125_ZQ_CFG,
.emif_ddr_phy_ctlr_1 = MT41J128MJT125_EMIF_READ_LATENCY,
};
static struct emif_regs ddr3_evm_emif_reg_data = {
.sdram_config = MT41J512M8RH125_EMIF_SDCFG,
.ref_ctrl = MT41J512M8RH125_EMIF_SDREF,
.sdram_tim1 = MT41J512M8RH125_EMIF_TIM1,
.sdram_tim2 = MT41J512M8RH125_EMIF_TIM2,
.sdram_tim3 = MT41J512M8RH125_EMIF_TIM3,
.zq_config = MT41J512M8RH125_ZQ_CFG,
.emif_ddr_phy_ctlr_1 = MT41J512M8RH125_EMIF_READ_LATENCY,
};
#endif
/*
@ -301,6 +339,9 @@ void s_init(void)
if (board_is_evm_sk() || board_is_bone_lt())
config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
&ddr3_cmd_ctrl_data, &ddr3_emif_reg_data);
else if (board_is_evm_15_or_later())
config_ddr(303, MT41J512M8RH125_IOCTRL_VALUE, &ddr3_evm_data,
&ddr3_evm_cmd_ctrl_data, &ddr3_evm_emif_reg_data);
else
config_ddr(266, MT47H128M16RT25E_IOCTRL_VALUE, &ddr2_data,
&ddr2_cmd_ctrl_data, &ddr2_emif_reg_data);