summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJeff Lance <jefflance01@gmail.com>2013-01-14 05:32:20 +0000
committerTom Rini <trini@ti.com>2013-02-07 10:36:26 -0500
commit13526f7157096dd10ad6027b02af9b1093694170 (patch)
treed3a23d1a66369735029c969e363b991454aab864
parent3ec36b34fea10c793f6f41859cfcff083d6ee8a3 (diff)
downloadu-boot-imx-13526f7157096dd10ad6027b02af9b1093694170.zip
u-boot-imx-13526f7157096dd10ad6027b02af9b1093694170.tar.gz
u-boot-imx-13526f7157096dd10ad6027b02af9b1093694170.tar.bz2
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>
-rw-r--r--arch/arm/include/asm/arch-am33xx/ddr_defs.h16
-rw-r--r--board/ti/am335x/board.c41
2 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index f95b332..ae43ef8 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -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
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 7332601..b9ac1d5 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -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);