[U-Boot] [PATCHv2 5/6] am33xx: support board specific ddr settings
Peter Korsgaard
peter.korsgaard at barco.com
Thu Oct 18 13:21:12 CEST 2012
Move the hardcoded ddr2/ddr3 settings for the ti boards to board code,
so other boards can use different types/timings.
Signed-off-by: Peter Korsgaard <peter.korsgaard at barco.com>
---
arch/arm/cpu/armv7/am33xx/emif4.c | 114 +++------------------------
arch/arm/include/asm/arch-am33xx/ddr_defs.h | 5 +-
board/ti/am335x/board.c | 89 ++++++++++++++++++---
3 files changed, 92 insertions(+), 116 deletions(-)
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index b2d7c0d..01e3a52 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -47,78 +47,6 @@ void dram_init_banksize(void)
static struct vtp_reg *vtpreg = (struct vtp_reg *)VTP0_CTRL_ADDR;
static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR;
-static const struct ddr_data ddr2_data = {
- .datardsratio0 = ((DDR2_RD_DQS<<30)|(DDR2_RD_DQS<<20)
- |(DDR2_RD_DQS<<10)|(DDR2_RD_DQS<<0)),
- .datawdsratio0 = ((DDR2_WR_DQS<<30)|(DDR2_WR_DQS<<20)
- |(DDR2_WR_DQS<<10)|(DDR2_WR_DQS<<0)),
- .datawiratio0 = ((DDR2_PHY_WRLVL<<30)|(DDR2_PHY_WRLVL<<20)
- |(DDR2_PHY_WRLVL<<10)|(DDR2_PHY_WRLVL<<0)),
- .datagiratio0 = ((DDR2_PHY_GATELVL<<30)|(DDR2_PHY_GATELVL<<20)
- |(DDR2_PHY_GATELVL<<10)|(DDR2_PHY_GATELVL<<0)),
- .datafwsratio0 = ((DDR2_PHY_FIFO_WE<<30)|(DDR2_PHY_FIFO_WE<<20)
- |(DDR2_PHY_FIFO_WE<<10)|(DDR2_PHY_FIFO_WE<<0)),
- .datawrsratio0 = ((DDR2_PHY_WR_DATA<<30)|(DDR2_PHY_WR_DATA<<20)
- |(DDR2_PHY_WR_DATA<<10)|(DDR2_PHY_WR_DATA<<0)),
- .datauserank0delay = DDR2_PHY_RANK0_DELAY,
- .datadldiff0 = PHY_DLL_LOCK_DIFF,
-};
-
-static const struct cmd_control ddr2_cmd_ctrl_data = {
- .cmd0csratio = DDR2_RATIO,
- .cmd0dldiff = DDR2_DLL_LOCK_DIFF,
- .cmd0iclkout = DDR2_INVERT_CLKOUT,
-
- .cmd1csratio = DDR2_RATIO,
- .cmd1dldiff = DDR2_DLL_LOCK_DIFF,
- .cmd1iclkout = DDR2_INVERT_CLKOUT,
-
- .cmd2csratio = DDR2_RATIO,
- .cmd2dldiff = DDR2_DLL_LOCK_DIFF,
- .cmd2iclkout = DDR2_INVERT_CLKOUT,
-};
-
-static const struct emif_regs ddr2_emif_reg_data = {
- .sdram_config = DDR2_EMIF_SDCFG,
- .ref_ctrl = DDR2_EMIF_SDREF,
- .sdram_tim1 = DDR2_EMIF_TIM1,
- .sdram_tim2 = DDR2_EMIF_TIM2,
- .sdram_tim3 = DDR2_EMIF_TIM3,
- .emif_ddr_phy_ctlr_1 = DDR2_EMIF_READ_LATENCY,
-};
-
-static const struct ddr_data ddr3_data = {
- .datardsratio0 = DDR3_RD_DQS,
- .datawdsratio0 = DDR3_WR_DQS,
- .datafwsratio0 = DDR3_PHY_FIFO_WE,
- .datawrsratio0 = DDR3_PHY_WR_DATA,
- .datadldiff0 = PHY_DLL_LOCK_DIFF,
-};
-
-static const struct cmd_control ddr3_cmd_ctrl_data = {
- .cmd0csratio = DDR3_RATIO,
- .cmd0dldiff = DDR3_DLL_LOCK_DIFF,
- .cmd0iclkout = DDR3_INVERT_CLKOUT,
-
- .cmd1csratio = DDR3_RATIO,
- .cmd1dldiff = DDR3_DLL_LOCK_DIFF,
- .cmd1iclkout = DDR3_INVERT_CLKOUT,
-
- .cmd2csratio = DDR3_RATIO,
- .cmd2dldiff = DDR3_DLL_LOCK_DIFF,
- .cmd2iclkout = DDR3_INVERT_CLKOUT,
-};
-
-static struct emif_regs ddr3_emif_reg_data = {
- .sdram_config = DDR3_EMIF_SDCFG,
- .ref_ctrl = DDR3_EMIF_SDREF,
- .sdram_tim1 = DDR3_EMIF_TIM1,
- .sdram_tim2 = DDR3_EMIF_TIM2,
- .sdram_tim3 = DDR3_EMIF_TIM3,
- .zq_config = DDR3_ZQ_CFG,
- .emif_ddr_phy_ctlr_1 = DDR3_EMIF_READ_LATENCY,
-};
-
static void config_vtp(void)
{
writel(readl(&vtpreg->vtp0ctrlreg) | VTP_CTRL_ENABLE,
@@ -134,46 +62,26 @@ static void config_vtp(void)
;
}
-void config_ddr(short ddr_type)
+void config_ddr(unsigned int pll, unsigned int ioctrl,
+ const struct ddr_data *data, const struct cmd_control *ctrl,
+ const struct emif_regs *regs)
{
- int ddr_pll, ioctrl_val;
- const struct emif_regs *emif_regs;
- const struct ddr_data *ddr_data;
- const struct cmd_control *cmd_ctrl_data;
-
- if (ddr_type == EMIF_REG_SDRAM_TYPE_DDR2) {
- ddr_pll = 266;
- cmd_ctrl_data = &ddr2_cmd_ctrl_data;
- ddr_data = &ddr2_data;
- ioctrl_val = DDR2_IOCTRL_VALUE;
- emif_regs = &ddr2_emif_reg_data;
- } else if (ddr_type == EMIF_REG_SDRAM_TYPE_DDR3) {
- ddr_pll = 303;
- cmd_ctrl_data = &ddr3_cmd_ctrl_data;
- ddr_data = &ddr3_data;
- ioctrl_val = DDR3_IOCTRL_VALUE;
- emif_regs = &ddr3_emif_reg_data;
- } else {
- puts("Unknown memory type");
- hang();
- }
-
enable_emif_clocks();
- ddr_pll_config(ddr_pll);
+ ddr_pll_config(pll);
config_vtp();
- config_cmd_ctrl(cmd_ctrl_data);
+ config_cmd_ctrl(ctrl);
- config_ddr_data(0, ddr_data);
- config_ddr_data(1, ddr_data);
+ config_ddr_data(0, data);
+ config_ddr_data(1, data);
- config_io_ctrl(ioctrl_val);
+ config_io_ctrl(ioctrl);
/* Set CKE to be controlled by EMIF/DDR PHY */
writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl);
/* Program EMIF instance */
- config_ddr_phy(emif_regs);
- set_sdram_timings(emif_regs);
- config_sdram(emif_regs);
+ config_ddr_phy(regs);
+ set_sdram_timings(regs);
+ config_sdram(regs);
}
#endif
diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index 6b22c45..40a13e9 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -29,6 +29,7 @@
#define PHY_DLL_LOCK_DIFF 0x0
#define DDR_CKE_CTRL_NORMAL 0x1
+/* Micron MT47H128M16RT-25E */
#define DDR2_EMIF_READ_LATENCY 0x100005 /* Enable Dynamic Power Down */
#define DDR2_EMIF_TIM1 0x0666B3C9
#define DDR2_EMIF_TIM2 0x243631CA
@@ -189,6 +190,8 @@ struct ddr_ctrl {
unsigned int ddrckectrl;
};
-void config_ddr(short ddr_type);
+void config_ddr(unsigned int pll, unsigned int ioctrl,
+ const struct ddr_data *data, const struct cmd_control *ctrl,
+ const struct emif_regs *regs);
#endif /* _DDR_DEFS_H */
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index f081a83..2962529 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -115,19 +115,79 @@ static int read_eeprom(void)
#define UART_RESET (0x1 << 1)
#define UART_CLK_RUNNING_MASK 0x1
#define UART_SMART_IDLE_EN (0x1 << 0x3)
-#endif
-/*
- * Determine what type of DDR we have.
- */
-static short inline board_memory_type(void)
-{
- /* The following boards are known to use DDR3. */
- if (board_is_evm_sk() || board_is_bone_lt())
- return EMIF_REG_SDRAM_TYPE_DDR3;
+static const struct ddr_data ddr2_data = {
+ .datardsratio0 = ((DDR2_RD_DQS<<30)|(DDR2_RD_DQS<<20)
+ |(DDR2_RD_DQS<<10)|(DDR2_RD_DQS<<0)),
+ .datawdsratio0 = ((DDR2_WR_DQS<<30)|(DDR2_WR_DQS<<20)
+ |(DDR2_WR_DQS<<10)|(DDR2_WR_DQS<<0)),
+ .datawiratio0 = ((DDR2_PHY_WRLVL<<30)|(DDR2_PHY_WRLVL<<20)
+ |(DDR2_PHY_WRLVL<<10)|(DDR2_PHY_WRLVL<<0)),
+ .datagiratio0 = ((DDR2_PHY_GATELVL<<30)|(DDR2_PHY_GATELVL<<20)
+ |(DDR2_PHY_GATELVL<<10)|(DDR2_PHY_GATELVL<<0)),
+ .datafwsratio0 = ((DDR2_PHY_FIFO_WE<<30)|(DDR2_PHY_FIFO_WE<<20)
+ |(DDR2_PHY_FIFO_WE<<10)|(DDR2_PHY_FIFO_WE<<0)),
+ .datawrsratio0 = ((DDR2_PHY_WR_DATA<<30)|(DDR2_PHY_WR_DATA<<20)
+ |(DDR2_PHY_WR_DATA<<10)|(DDR2_PHY_WR_DATA<<0)),
+ .datauserank0delay = DDR2_PHY_RANK0_DELAY,
+ .datadldiff0 = PHY_DLL_LOCK_DIFF,
+};
- return EMIF_REG_SDRAM_TYPE_DDR2;
-}
+static const struct cmd_control ddr2_cmd_ctrl_data = {
+ .cmd0csratio = DDR2_RATIO,
+ .cmd0dldiff = DDR2_DLL_LOCK_DIFF,
+ .cmd0iclkout = DDR2_INVERT_CLKOUT,
+
+ .cmd1csratio = DDR2_RATIO,
+ .cmd1dldiff = DDR2_DLL_LOCK_DIFF,
+ .cmd1iclkout = DDR2_INVERT_CLKOUT,
+
+ .cmd2csratio = DDR2_RATIO,
+ .cmd2dldiff = DDR2_DLL_LOCK_DIFF,
+ .cmd2iclkout = DDR2_INVERT_CLKOUT,
+};
+
+static const struct emif_regs ddr2_emif_reg_data = {
+ .sdram_config = DDR2_EMIF_SDCFG,
+ .ref_ctrl = DDR2_EMIF_SDREF,
+ .sdram_tim1 = DDR2_EMIF_TIM1,
+ .sdram_tim2 = DDR2_EMIF_TIM2,
+ .sdram_tim3 = DDR2_EMIF_TIM3,
+ .emif_ddr_phy_ctlr_1 = DDR2_EMIF_READ_LATENCY,
+};
+
+static const struct ddr_data ddr3_data = {
+ .datardsratio0 = DDR3_RD_DQS,
+ .datawdsratio0 = DDR3_WR_DQS,
+ .datafwsratio0 = DDR3_PHY_FIFO_WE,
+ .datawrsratio0 = DDR3_PHY_WR_DATA,
+ .datadldiff0 = PHY_DLL_LOCK_DIFF,
+};
+
+static const struct cmd_control ddr3_cmd_ctrl_data = {
+ .cmd0csratio = DDR3_RATIO,
+ .cmd0dldiff = DDR3_DLL_LOCK_DIFF,
+ .cmd0iclkout = DDR3_INVERT_CLKOUT,
+
+ .cmd1csratio = DDR3_RATIO,
+ .cmd1dldiff = DDR3_DLL_LOCK_DIFF,
+ .cmd1iclkout = DDR3_INVERT_CLKOUT,
+
+ .cmd2csratio = DDR3_RATIO,
+ .cmd2dldiff = DDR3_DLL_LOCK_DIFF,
+ .cmd2iclkout = DDR3_INVERT_CLKOUT,
+};
+
+static struct emif_regs ddr3_emif_reg_data = {
+ .sdram_config = DDR3_EMIF_SDCFG,
+ .ref_ctrl = DDR3_EMIF_SDREF,
+ .sdram_tim1 = DDR3_EMIF_TIM1,
+ .sdram_tim2 = DDR3_EMIF_TIM2,
+ .sdram_tim3 = DDR3_EMIF_TIM3,
+ .zq_config = DDR3_ZQ_CFG,
+ .emif_ddr_phy_ctlr_1 = DDR3_EMIF_READ_LATENCY,
+};
+#endif
/*
* early system init of muxing and clocks.
@@ -185,7 +245,12 @@ void s_init(void)
gpio_direction_output(GPIO_DDR_VTT_EN, 1);
}
- config_ddr(board_memory_type());
+ if (board_is_evm_sk() || board_is_bone_lt())
+ config_ddr(303, DDR3_IOCTRL_VALUE, &ddr3_data,
+ &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data);
+ else
+ config_ddr(266, DDR2_IOCTRL_VALUE, &ddr2_data,
+ &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data);
#endif
}
--
1.7.10.4
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