writel(regs->temp_alert_config, &emif->emif_temp_alert_config);
writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
- if (omap_revision() == OMAP5430_ES1_0) {
+ if (omap_revision() >= OMAP5430_ES1_0) {
writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0,
&emif->emif_l3_config);
} else if (omap_revision() >= OMAP4460_ES1_0) {
}
}
+static void ddr3_leveling(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ /* keep sdram in self-refresh */
+ writel(((LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT)
+ & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl);
+ __udelay(130);
+
+ /*
+ * Set invert_clkout (if activated)--DDR_PHYCTRL_1
+ * Invert clock adds an additional half cycle delay on the command
+ * interface. The additional half cycle, is usually meant to enable
+ * leveling in the situation that DQS is later than CK on the board.It
+ * also helps provide some additional margin for leveling.
+ */
+ writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1);
+ writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
+ __udelay(130);
+
+ writel(((LP_MODE_DISABLE << EMIF_REG_LP_MODE_SHIFT)
+ & EMIF_REG_LP_MODE_MASK), &emif->emif_pwr_mgmt_ctrl);
+
+ /* Launch Full leveling */
+ writel(DDR3_FULL_LVL, &emif->emif_rd_wr_lvl_ctl);
+
+ /* Wait till full leveling is complete */
+ readl(&emif->emif_rd_wr_lvl_ctl);
+ __udelay(130);
+
+ /* Read data eye leveling no of samples */
+ config_data_eye_leveling_samples(base);
+
+ /* Launch 8 incremental WR_LVL- to compensate for PHY limitation */
+ writel(0x2 << EMIF_REG_WRLVLINC_INT_SHIFT, &emif->emif_rd_wr_lvl_ctl);
+ __udelay(130);
+
+ /* Launch Incremental leveling */
+ writel(DDR3_INC_LVL, &emif->emif_rd_wr_lvl_ctl);
+ __udelay(130);
+}
+
+static void ddr3_init(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ u32 *ext_phy_ctrl_base = 0;
+ u32 *emif_ext_phy_ctrl_base = 0;
+ u32 i = 0;
+
+ /*
+ * Set SDRAM_CONFIG and PHY control registers to locked frequency
+ * and RL =7. As the default values of the Mode Registers are not
+ * defined, contents of mode Registers must be fully initialized.
+ * H/W takes care of this initialization
+ */
+ writel(regs->sdram_config_init, &emif->emif_sdram_config);
+
+ writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
+
+ /* Update timing registers */
+ writel(regs->sdram_tim1, &emif->emif_sdram_tim_1);
+ writel(regs->sdram_tim2, &emif->emif_sdram_tim_2);
+ writel(regs->sdram_tim3, &emif->emif_sdram_tim_3);
+
+ writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl);
+ writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl);
+
+ ext_phy_ctrl_base = (u32 *) &(regs->emif_ddr_ext_phy_ctrl_1);
+ emif_ext_phy_ctrl_base = (u32 *) &(emif->emif_ddr_ext_phy_ctrl_1);
+
+ /* Configure external phy control timing registers */
+ for (i = 0; i < EMIF_EXT_PHY_CTRL_TIMING_REG; i++) {
+ writel(*ext_phy_ctrl_base, emif_ext_phy_ctrl_base++);
+ /* Update shadow registers */
+ writel(*ext_phy_ctrl_base++, emif_ext_phy_ctrl_base++);
+ }
+
+ /*
+ * external phy 6-24 registers do not change with
+ * ddr frequency
+ */
+ for (i = 0; i < EMIF_EXT_PHY_CTRL_CONST_REG; i++) {
+ writel(ddr3_ext_phy_ctrl_const_base[i],
+ emif_ext_phy_ctrl_base++);
+ /* Update shadow registers */
+ writel(ddr3_ext_phy_ctrl_const_base[i],
+ emif_ext_phy_ctrl_base++);
+ }
+
+ /* enable leveling */
+ writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl);
+
+ ddr3_leveling(base, regs);
+}
+
#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
#define print_timing_reg(reg) debug(#reg" - 0x%08x\n", (reg))
* Changing the timing registers in EMIF can happen(going from one
* OPP to another)
*/
- if (!in_sdram)
- lpddr2_init(base, regs);
+ if (!in_sdram) {
+ if (omap_revision() != OMAP5432_ES1_0)
+ lpddr2_init(base, regs);
+ else
+ ddr3_init(base, regs);
+ }
/* Write to the shadow registers */
emif_update_timings(base, regs);
#define EMIF_REG_DDR_PHY_CTRL_2_SHIFT 0
#define EMIF_REG_DDR_PHY_CTRL_2_MASK (0xffffffff << 0)
+/*EMIF_READ_WRITE_LEVELING_CONTROL*/
+#define EMIF_REG_RDWRLVLFULL_START_SHIFT 31
+#define EMIF_REG_RDWRLVLFULL_START_MASK (1 << 31)
+#define EMIF_REG_RDWRLVLINC_PRE_SHIFT 24
+#define EMIF_REG_RDWRLVLINC_PRE_MASK (0x7F << 24)
+#define EMIF_REG_RDLVLINC_INT_SHIFT 16
+#define EMIF_REG_RDLVLINC_INT_MASK (0xFF << 16)
+#define EMIF_REG_RDLVLGATEINC_INT_SHIFT 8
+#define EMIF_REG_RDLVLGATEINC_INT_MASK (0xFF << 8)
+#define EMIF_REG_WRLVLINC_INT_SHIFT 0
+#define EMIF_REG_WRLVLINC_INT_MASK (0xFF << 0)
+
+/*EMIF_READ_WRITE_LEVELING_RAMP_CONTROL*/
+#define EMIF_REG_RDWRLVL_EN_SHIFT 31
+#define EMIF_REG_RDWRLVL_EN_MASK (1 << 31)
+#define EMIF_REG_RDWRLVLINC_RMP_PRE_SHIFT 24
+#define EMIF_REG_RDWRLVLINC_RMP_PRE_MASK (0x7F << 24)
+#define EMIF_REG_RDLVLINC_RMP_INT_SHIFT 16
+#define EMIF_REG_RDLVLINC_RMP_INT_MASK (0xFF << 16)
+#define EMIF_REG_RDLVLGATEINC_RMP_INT_SHIFT 8
+#define EMIF_REG_RDLVLGATEINC_RMP_INT_MASK (0xFF << 8)
+#define EMIF_REG_WRLVLINC_RMP_INT_SHIFT 0
+#define EMIF_REG_WRLVLINC_RMP_INT_MASK (0xFF << 0)
+
+/*EMIF_READ_WRITE_LEVELING_RAMP_WINDOW*/
+#define EMIF_REG_RDWRLVLINC_RMP_WIN_SHIFT 0
+#define EMIF_REG_RDWRLVLINC_RMP_WIN_MASK (0x1FFF << 0)
+
+/*Leveling Fields */
+#define DDR3_WR_LVL_INT 0x73
+#define DDR3_RD_LVL_INT 0x33
+#define DDR3_RD_LVL_GATE_INT 0x59
+#define RD_RW_LVL_INC_PRE 0x0
+#define DDR3_FULL_LVL (1 << EMIF_REG_RDWRLVL_EN_SHIFT)
+
+#define DDR3_INC_LVL ((DDR3_WR_LVL_INT << EMIF_REG_WRLVLINC_INT_SHIFT) \
+ | (DDR3_RD_LVL_GATE_INT << EMIF_REG_RDLVLGATEINC_INT_SHIFT) \
+ | (DDR3_RD_LVL_INT << EMIF_REG_RDLVLINC_RMP_INT_SHIFT) \
+ | (RD_RW_LVL_INC_PRE << EMIF_REG_RDWRLVLINC_RMP_PRE_SHIFT))
+
+#define SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES 0x0000C1A7
+#define SDRAM_CONFIG_EXT_RD_LVL_4_SAMPLES 0x000001A7
+
/* DMM */
#define DMM_BASE 0x4E000040
extern u32 *const emif_sizes;
#endif
-
+void config_data_eye_leveling_samples(u32 emif_base);
#endif
projects / oweals / u-boot.git / commitdiff