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 --- arch/arm/include/asm/arch-am33xx/ddr_defs.h | 17 +++++++++++ board/ti/am335x/board.c | 41 +++++++++++++++++++++++++++ 2 files changed, 58 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 8e69fb6..7b46dbd 100644 --- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h +++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h @@ -65,6 +65,23 @@ #define MT41J128MJT125_PHY_FIFO_WE 0x100 #define MT41J128MJT125_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 ed4229e..f061a8d 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);