ARM: DRA7xx: EMIF: Change settings required for EVM board

DRA7 EVM board has the below configuration. Adding the
settings for the same here.

   2Gb_1_35V_DDR3L part * 2 on EMIF1
   2Gb_1_35V_DDR3L part * 4 on EMIF2

Signed-off-by: Sricharan R <r.sricharan@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/cpu/armv7/omap-common/emif-common.c

@@ -209,7 +209,8 @@ void emif_update_timings(u32 base, const struct emif_regs *regs)
 	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) ||
+				(omap_revision() == DRA752_ES1_0)) {
 		writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0,
 			&emif->emif_l3_config);
 	} else if (omap_revision() >= OMAP4460_ES1_0) {
@@ -263,6 +264,18 @@ static void ddr3_leveling(u32 base, const struct emif_regs *regs)
 	__udelay(130);
 }
 
+static void ddr3_sw_leveling(u32 base, const struct emif_regs *regs)
+{
+	struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+	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);
+	config_data_eye_leveling_samples(base);
+
+	writel(regs->emif_rd_wr_lvl_ctl, &emif->emif_rd_wr_lvl_ctl);
+	writel(regs->sdram_config, &emif->emif_sdram_config);
+}
+
 static void ddr3_init(u32 base, const struct emif_regs *regs)
 {
 	struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
@@ -273,6 +286,7 @@ static void ddr3_init(u32 base, const struct emif_regs *regs)
 	 * defined, contents of mode Registers must be fully initialized.
 	 * H/W takes care of this initialization
 	 */
+	writel(regs->sdram_config2, &emif->emif_lpddr2_nvm_config);
 	writel(regs->sdram_config_init, &emif->emif_sdram_config);
 
 	writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
@@ -290,7 +304,10 @@ static void ddr3_init(u32 base, const struct emif_regs *regs)
 	/* enable leveling */
 	writel(regs->emif_rd_wr_lvl_rmp_ctl, &emif->emif_rd_wr_lvl_rmp_ctl);
 
-	ddr3_leveling(base, regs);
+	if (omap_revision() == DRA752_ES1_0)
+		ddr3_sw_leveling(base, regs);
+	else
+		ddr3_leveling(base, regs);
 }
 
 #ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
@@ -1078,7 +1095,10 @@ static void do_sdram_init(u32 base)
 	if (warm_reset() && (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3)) {
 		set_lpmode_selfrefresh(base);
 		emif_reset_phy(base);
-		ddr3_leveling(base, regs);
+		if (omap_revision() == DRA752_ES1_0)
+			ddr3_sw_leveling(base, regs);
+		else
+			ddr3_leveling(base, regs);
 	}
 
 	/* Write to the shadow registers */

arch/arm/cpu/armv7/omap5/hw_data.c

@@ -602,6 +602,17 @@ const struct ctrl_ioregs ioregs_omap5432_es2 = {
 	.ctrl_emif_sdram_config_ext = SDRAM_CONFIG_EXT_RD_LVL_11_SAMPLES,
 };
 
+const struct ctrl_ioregs ioregs_dra7xx_es1 = {
+	.ctrl_ddrch = 0x40404040,
+	.ctrl_lpddr2ch = 0x40404040,
+	.ctrl_ddr3ch = 0x80808080,
+	.ctrl_ddrio_0 = 0xbae8c631,
+	.ctrl_ddrio_1 = 0xb46318d8,
+	.ctrl_ddrio_2 = 0x84210000,
+	.ctrl_emif_sdram_config_ext = 0xb2c00000,
+	.ctrl_ddr_ctrl_ext_0 = 0xA2000000,
+};
+
 void hw_data_init(void)
 {
 	u32 omap_rev = omap_revision();
@@ -644,14 +655,16 @@ void get_ioregs(const struct ctrl_ioregs **regs)
 	case OMAP5430_ES1_0:
 	case OMAP5430_ES2_0:
 		*regs = &ioregs_omap5430;
-	break;
+		break;
 	case OMAP5432_ES1_0:
 		*regs = &ioregs_omap5432_es1;
-	break;
+		break;
 	case OMAP5432_ES2_0:
-	case DRA752_ES1_0:
 		*regs = &ioregs_omap5432_es2;
-	break;
+		break;
+	case DRA752_ES1_0:
+		*regs = &ioregs_dra7xx_es1;
+		break;
 
 	default:
 		printf("\n INVALID OMAP REVISION ");

arch/arm/cpu/armv7/omap5/hwinit.c

@@ -100,16 +100,21 @@ static void io_settings_ddr3(void)
 	writel(ioregs->ctrl_emif_sdram_config_ext,
 	       (*ctrl)->control_emif2_sdram_config_ext);
 
-	/* Disable DLL select */
+	if (is_omap54xx()) {
-	io_settings = (readl((*ctrl)->control_port_emif1_sdram_config)
+		/* Disable DLL select */
+		io_settings = (readl((*ctrl)->control_port_emif1_sdram_config)
 							& 0xFFEFFFFF);
-	writel(io_settings,
+		writel(io_settings,
-		(*ctrl)->control_port_emif1_sdram_config);
+			(*ctrl)->control_port_emif1_sdram_config);
 
-	io_settings = (readl((*ctrl)->control_port_emif2_sdram_config)
+		io_settings = (readl((*ctrl)->control_port_emif2_sdram_config)
 							& 0xFFEFFFFF);
-	writel(io_settings,
+		writel(io_settings,
-		(*ctrl)->control_port_emif2_sdram_config);
+			(*ctrl)->control_port_emif2_sdram_config);
+	} else {
+		writel(ioregs->ctrl_ddr_ctrl_ext_0,
+				(*ctrl)->control_ddr_control_ext_0);
+	}
 }
 
 /*

arch/arm/cpu/armv7/omap5/prcm-regs.c

@@ -439,6 +439,7 @@ struct omap_sys_ctrl_regs const dra7xx_ctrl = {
 	.control_srcomp_east_side		= 0x4A002E7C,
 	.control_srcomp_west_side		= 0x4A002E80,
 	.control_srcomp_code_latch		= 0x4A002E84,
+	.control_ddr_control_ext_0		= 0x4A002E88,
 	.control_padconf_core_base		= 0x4A003400,
 	.control_port_emif1_sdram_config	= 0x4AE0C110,
 	.control_port_emif1_lpddr2_nvm_config	= 0x4AE0C114,

arch/arm/cpu/armv7/omap5/sdram.c

@@ -108,6 +108,7 @@ const struct emif_regs emif_regs_266_mhz_2cs = {
 const struct emif_regs emif_regs_ddr3_532_mhz_1cs = {
 	.sdram_config_init		= 0x61851B32,
 	.sdram_config			= 0x61851B32,
+	.sdram_config2			= 0x0,
 	.ref_ctrl			= 0x00001035,
 	.sdram_tim1			= 0xCCCF36B3,
 	.sdram_tim2			= 0x308F7FDA,
@@ -131,6 +132,7 @@ const struct emif_regs emif_regs_ddr3_532_mhz_1cs = {
 const struct emif_regs emif_regs_ddr3_532_mhz_1cs_es2 = {
 	.sdram_config_init              = 0x61851B32,
 	.sdram_config                   = 0x61851B32,
+	.sdram_config2			= 0x0,
 	.ref_ctrl                       = 0x00001035,
 	.sdram_tim1                     = 0xCCCF36B3,
 	.sdram_tim2                     = 0x308F7FDA,
@@ -151,6 +153,54 @@ const struct emif_regs emif_regs_ddr3_532_mhz_1cs_es2 = {
 	.emif_rd_wr_exec_thresh         = 0x40000305
 };
 
+const struct emif_regs emif_1_regs_ddr3_532_mhz_1cs_dra_es1 = {
+	.sdram_config_init              = 0x61851ab2,
+	.sdram_config                   = 0x61851ab2,
+	.sdram_config2			= 0x08000000,
+	.ref_ctrl                       = 0x00001035,
+	.sdram_tim1                     = 0xCCCF36B3,
+	.sdram_tim2                     = 0x308F7FDA,
+	.sdram_tim3                     = 0x027F88A8,
+	.read_idle_ctrl                 = 0x00050000,
+	.zq_config                      = 0x0007190B,
+	.temp_alert_config              = 0x00000000,
+	.emif_ddr_phy_ctlr_1_init       = 0x0E20400A,
+	.emif_ddr_phy_ctlr_1            = 0x0E24400A,
+	.emif_ddr_ext_phy_ctrl_1        = 0x04040100,
+	.emif_ddr_ext_phy_ctrl_2        = 0x009E009E,
+	.emif_ddr_ext_phy_ctrl_3        = 0x009E009E,
+	.emif_ddr_ext_phy_ctrl_4        = 0x009E009E,
+	.emif_ddr_ext_phy_ctrl_5        = 0x009E009E,
+	.emif_rd_wr_lvl_rmp_win         = 0x00000000,
+	.emif_rd_wr_lvl_rmp_ctl         = 0x80000000,
+	.emif_rd_wr_lvl_ctl             = 0x00000000,
+	.emif_rd_wr_exec_thresh         = 0x00000305
+};
+
+const struct emif_regs emif_2_regs_ddr3_532_mhz_1cs_dra_es1 = {
+	.sdram_config_init              = 0x61851B32,
+	.sdram_config                   = 0x61851B32,
+	.sdram_config2			= 0x08000000,
+	.ref_ctrl                       = 0x00001035,
+	.sdram_tim1                     = 0xCCCF36B3,
+	.sdram_tim2                     = 0x308F7FDA,
+	.sdram_tim3                     = 0x027F88A8,
+	.read_idle_ctrl                 = 0x00050000,
+	.zq_config                      = 0x0007190B,
+	.temp_alert_config              = 0x00000000,
+	.emif_ddr_phy_ctlr_1_init       = 0x0020400A,
+	.emif_ddr_phy_ctlr_1            = 0x0E24400A,
+	.emif_ddr_ext_phy_ctrl_1        = 0x04040100,
+	.emif_ddr_ext_phy_ctrl_2        = 0x009D009D,
+	.emif_ddr_ext_phy_ctrl_3        = 0x009D009D,
+	.emif_ddr_ext_phy_ctrl_4        = 0x009D009D,
+	.emif_ddr_ext_phy_ctrl_5        = 0x009D009D,
+	.emif_rd_wr_lvl_rmp_win         = 0x00000000,
+	.emif_rd_wr_lvl_rmp_ctl         = 0x80000000,
+	.emif_rd_wr_lvl_ctl             = 0x00000000,
+	.emif_rd_wr_exec_thresh         = 0x00000305
+};
+
 const struct dmm_lisa_map_regs lisa_map_4G_x_2_x_2 = {
 	.dmm_lisa_map_0 = 0x0,
 	.dmm_lisa_map_1 = 0x0,
@@ -159,11 +209,39 @@ const struct dmm_lisa_map_regs lisa_map_4G_x_2_x_2 = {
 	.is_ma_present	= 0x1
 };
 
-const struct dmm_lisa_map_regs lisa_map_512M_x_1 = {
+/*
+ * DRA752 EVM board has 1.5 GB of memory
+ * EMIF1 --> 2Gb * 2 =  512MB
+ * EMIF2 --> 2Gb * 4 =  1GB
+ * so mapping 1GB interleaved and 512MB non-interleaved
+ */
+const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2_2G_x_1_x_2 = {
+	.dmm_lisa_map_0 = 0x0,
+	.dmm_lisa_map_1 = 0x80640300,
+	.dmm_lisa_map_2 = 0xC0500220,
+	.dmm_lisa_map_3 = 0xFF020100,
+	.is_ma_present	= 0x1
+};
+
+/*
+ * DRA752 EVM EMIF1 ONLY CONFIGURATION
+ */
+const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2 = {
 	.dmm_lisa_map_0 = 0x0,
 	.dmm_lisa_map_1 = 0x0,
-	.dmm_lisa_map_2 = 0x0,
+	.dmm_lisa_map_2 = 0x80500100,
-	.dmm_lisa_map_3 = 0x80500100,
+	.dmm_lisa_map_3 = 0xFF020100,
+	.is_ma_present	= 0x1
+};
+
+/*
+ * DRA752 EVM EMIF2 ONLY CONFIGURATION
+ */
+const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2 = {
+	.dmm_lisa_map_0 = 0x0,
+	.dmm_lisa_map_1 = 0x0,
+	.dmm_lisa_map_2 = 0x80600200,
+	.dmm_lisa_map_3 = 0xFF020100,
 	.is_ma_present	= 0x1
 };
 
@@ -180,9 +258,20 @@ static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
 		*regs = &emif_regs_532_mhz_2cs_es2;
 		break;
 	case OMAP5432_ES2_0:
-	case DRA752_ES1_0:
-	default:
 		*regs = &emif_regs_ddr3_532_mhz_1cs_es2;
+		break;
+	case DRA752_ES1_0:
+		switch (emif_nr) {
+		case 1:
+			*regs = &emif_1_regs_ddr3_532_mhz_1cs_dra_es1;
+			break;
+		case 2:
+			*regs = &emif_2_regs_ddr3_532_mhz_1cs_dra_es1;
+			break;
+		}
+		break;
+	default:
+		*regs = &emif_1_regs_ddr3_532_mhz_1cs_dra_es1;
 	}
 }
 
@@ -201,7 +290,7 @@ static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
 		break;
 	case DRA752_ES1_0:
 	default:
-		*dmm_lisa_regs = &lisa_map_512M_x_1;
+		*dmm_lisa_regs = &lisa_map_2G_x_2_x_2_2G_x_1_x_2;
 	}
 
 }
@@ -252,7 +341,8 @@ const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
 	0x00000000,
 	0x00000000,
 	0x00000000,
-	0x00000077
+	0x00000077,
+	0x0
 };
 
 const u32 ddr3_ext_phy_ctrl_const_base_es1[EMIF_EXT_PHY_CTRL_CONST_REG] = {
@@ -274,7 +364,8 @@ const u32 ddr3_ext_phy_ctrl_const_base_es1[EMIF_EXT_PHY_CTRL_CONST_REG] = {
 	0x00000000,
 	0x00000000,
 	0x00000000,
-	0x00000057
+	0x00000057,
+	0x0
 };
 
 const u32 ddr3_ext_phy_ctrl_const_base_es2[EMIF_EXT_PHY_CTRL_CONST_REG] = {
@@ -296,7 +387,56 @@ const u32 ddr3_ext_phy_ctrl_const_base_es2[EMIF_EXT_PHY_CTRL_CONST_REG] = {
 	0x00000000,
 	0x00000000,
 	0x00000000,
-	0x00000057
+	0x00000057,
+	0x0
+};
+
+const u32
+dra_ddr3_ext_phy_ctrl_const_base_es1_emif1[EMIF_EXT_PHY_CTRL_CONST_REG] = {
+	0x009E009E,
+	0x002E002E,
+	0x002E002E,
+	0x002E002E,
+	0x002E002E,
+	0x002E002E,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x004D004D,
+	0x0,
+	0x600020,
+	0x40010080,
+	0x8102040
+};
+
+const u32
+dra_ddr3_ext_phy_ctrl_const_base_es1_emif2[EMIF_EXT_PHY_CTRL_CONST_REG] = {
+	0x009D009D,
+	0x002D002D,
+	0x002D002D,
+	0x002D002D,
+	0x002D002D,
+	0x002D002D,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x00570057,
+	0x0,
+	0x600020,
+	0x40010080,
+	0x8102040
 };
 
 const struct lpddr2_mr_regs mr_regs = {
@@ -307,7 +447,7 @@ const struct lpddr2_mr_regs mr_regs = {
 	.mr16	= MR16_REF_FULL_ARRAY
 };
 
-static void emif_get_ext_phy_ctrl_const_regs(const u32 **regs)
+static void emif_get_ext_phy_ctrl_const_regs(u32 emif_nr, const u32 **regs)
 {
 	switch (omap_revision()) {
 	case OMAP5430_ES1_0:
@@ -318,7 +458,14 @@ static void emif_get_ext_phy_ctrl_const_regs(const u32 **regs)
 		*regs = ddr3_ext_phy_ctrl_const_base_es1;
 		break;
 	case OMAP5432_ES2_0:
+		*regs = ddr3_ext_phy_ctrl_const_base_es2;
+		break;
 	case DRA752_ES1_0:
+		if (emif_nr == 1)
+			*regs = dra_ddr3_ext_phy_ctrl_const_base_es1_emif1;
+		else
+			*regs = dra_ddr3_ext_phy_ctrl_const_base_es1_emif2;
+		break;
 	default:
 		*regs = ddr3_ext_phy_ctrl_const_base_es2;
 
@@ -334,9 +481,12 @@ void do_ext_phy_settings(u32 base, const struct emif_regs *regs)
 {
 	u32 *ext_phy_ctrl_base = 0;
 	u32 *emif_ext_phy_ctrl_base = 0;
+	u32 emif_nr;
 	const u32 *ext_phy_ctrl_const_regs;
 	u32 i = 0;
 
+	emif_nr = (base == EMIF1_BASE) ? 1 : 2;
+
 	struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
 
 	ext_phy_ctrl_base = (u32 *) &(regs->emif_ddr_ext_phy_ctrl_1);
@@ -353,7 +503,7 @@ void do_ext_phy_settings(u32 base, const struct emif_regs *regs)
 	 * external phy 6-24 registers do not change with
 	 * ddr frequency
 	 */
-	emif_get_ext_phy_ctrl_const_regs(&ext_phy_ctrl_const_regs);
+	emif_get_ext_phy_ctrl_const_regs(emif_nr, &ext_phy_ctrl_const_regs);
 	for (i = 0; i < EMIF_EXT_PHY_CTRL_CONST_REG; i++) {
 		writel(ext_phy_ctrl_const_regs[i],
 		       emif_ext_phy_ctrl_base++);

arch/arm/include/asm/arch-omap5/omap.h

@@ -221,6 +221,7 @@ struct ctrl_ioregs {
 	u32 ctrl_ddrio_1;
 	u32 ctrl_ddrio_2;
 	u32 ctrl_emif_sdram_config_ext;
+	u32 ctrl_ddr_ctrl_ext_0;
 };
 #endif /* __ASSEMBLY__ */
 #endif

arch/arm/include/asm/emif.h

@@ -581,7 +581,7 @@
 	(0xFF << EMIF_SYS_ADDR_SHIFT))
 
 #define EMIF_EXT_PHY_CTRL_TIMING_REG	0x5
-#define EMIF_EXT_PHY_CTRL_CONST_REG	0x13
+#define EMIF_EXT_PHY_CTRL_CONST_REG	0x14
 
 /* Reg mapping structure */
 struct emif_reg_struct {
@@ -855,13 +855,10 @@ struct dmm_lisa_map_regs {
 #define DPD_ENABLE	1
 
 /* Maximum delay before Low Power Modes */
-#ifndef CONFIG_OMAP54XX
-#define REG_CS_TIM		0xF
-#else
 #define REG_CS_TIM		0x0
-#endif
+#define REG_SR_TIM		0x0
-#define REG_SR_TIM		0xF
+#define REG_PD_TIM		0x0
-#define REG_PD_TIM		0xF
+
 
 /* EMIF_PWR_MGMT_CTRL register */
 #define EMIF_PWR_MGMT_CTRL (\
@@ -1113,6 +1110,7 @@ struct emif_regs {
 	u32 freq;
 	u32 sdram_config_init;
 	u32 sdram_config;
+	u32 sdram_config2;
 	u32 ref_ctrl;
 	u32 sdram_tim1;
 	u32 sdram_tim2;

arch/arm/include/asm/omap_common.h

@@ -401,6 +401,7 @@ struct omap_sys_ctrl_regs {
 	u32 control_ddrio_0;
 	u32 control_ddrio_1;
 	u32 control_ddrio_2;
+	u32 control_ddr_control_ext_0;
 	u32 control_lpddr2io1_0;
 	u32 control_lpddr2io1_1;
 	u32 control_lpddr2io1_2;