ARM: DRA72: DDR3: Add emif settings for 666MHz clock

On DRA72x, EMIF supports DDR3 upto 667MHz.
Adding the required settings for DDR3 at 666MHz and enabling it.

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

2 files changed, 96 insertions, 3 deletions

diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c
index ed89f85..0257383 100644
--- a/arch/arm/cpu/armv7/omap5/hw_data.c
+++ b/arch/arm/cpu/armv7/omap5/hw_data.c
@@ -227,6 +227,16 @@ static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
 	{400, 15, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 38.4 MHz */
 };
 
+static const struct dpll_params ddr_dpll_params_2664mhz[NUM_SYS_CLKS] = {
+	{111, 0, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 12 MHz   */
+	{333, 4, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 20 MHz   */
+	{555, 6, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 16.8 MHz */
+	{555, 7, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 19.2 MHz */
+	{666, 12, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 26 MHz   */
+	{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},	/* 27 MHz   */
+	{555, 15, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 38.4 MHz */
+};
+
 static const struct dpll_params ddr_dpll_params_2128mhz[NUM_SYS_CLKS] = {
 	{266, 2, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 12 MHz   */
 	{266, 4, 2, 1, 8, -1, -1, -1, -1, -1, -1, -1},		/* 20 MHz   */
@@ -286,6 +296,17 @@ struct dplls dra7xx_dplls = {
 	.gmac = gmac_dpll_params_2000mhz,
 };
 
+struct dplls dra72x_dplls = {
+	.mpu = mpu_dpll_params_1ghz,
+	.core = core_dpll_params_2128mhz_dra7xx,
+	.per = per_dpll_params_768mhz_dra7xx,
+	.abe = abe_dpll_params_sysclk2_361267khz,
+	.iva = iva_dpll_params_2330mhz_dra7xx,
+	.usb = usb_dpll_params_1920mhz,
+	.ddr =	ddr_dpll_params_2664mhz,
+	.gmac = gmac_dpll_params_2000mhz,
+};
+
 struct pmic_data palmas = {
 	.base_offset = PALMAS_SMPS_BASE_VOLT_UV,
 	.step = 10000, /* 10 mV represented in uV */
@@ -560,6 +581,18 @@ const struct ctrl_ioregs ioregs_dra7xx_es1 = {
 	.ctrl_ddr_ctrl_ext_0 = 0xA2000000,
 };
 
+const struct ctrl_ioregs ioregs_dra72x_es1 = {
+	.ctrl_ddrch = 0x40404040,
+	.ctrl_lpddr2ch = 0x40404040,
+	.ctrl_ddr3ch = 0x60606080,
+	.ctrl_ddrio_0 = 0xA2084210,
+	.ctrl_ddrio_1 = 0x84210840,
+	.ctrl_ddrio_2 = 0x84210000,
+	.ctrl_emif_sdram_config_ext = 0x0001C1A7,
+	.ctrl_emif_sdram_config_ext_final = 0x0001C1A7,
+	.ctrl_ddr_ctrl_ext_0 = 0xA2000000,
+};
+
 void hw_data_init(void)
 {
 	u32 omap_rev = omap_revision();
@@ -592,7 +625,7 @@ void hw_data_init(void)
 
 	case DRA722_ES1_0:
 	*prcm = &dra7xx_prcm;
-	*dplls_data = &dra7xx_dplls;
+	*dplls_data = &dra72x_dplls;
 	*omap_vcores = &dra722_volts;
 	*ctrl = &dra7xx_ctrl;
 	break;
@@ -619,9 +652,11 @@ void get_ioregs(const struct ctrl_ioregs **regs)
 		break;
 	case DRA752_ES1_0:
 	case DRA752_ES1_1:
-	case DRA722_ES1_0:
 		*regs = &ioregs_dra7xx_es1;
 		break;
+	case DRA722_ES1_0:
+		*regs = &ioregs_dra72x_es1;
+		break;
 
 	default:
 		printf("\n INVALID OMAP REVISION ");
diff --git a/arch/arm/cpu/armv7/omap5/sdram.c b/arch/arm/cpu/armv7/omap5/sdram.c
index 9105121..065199b 100644
--- a/arch/arm/cpu/armv7/omap5/sdram.c
+++ b/arch/arm/cpu/armv7/omap5/sdram.c
@@ -185,6 +185,30 @@ const struct emif_regs emif_2_regs_ddr3_532_mhz_1cs_dra_es1 = {
 	.emif_rd_wr_exec_thresh         = 0x00000305
 };
 
+const struct emif_regs emif_1_regs_ddr3_666_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       = 0x0024400A,
+	.emif_ddr_phy_ctlr_1            = 0x0024400A,
+	.emif_ddr_ext_phy_ctrl_1        = 0x10040100,
+	.emif_ddr_ext_phy_ctrl_2        = 0x00A400A4,
+	.emif_ddr_ext_phy_ctrl_3        = 0x00A900A9,
+	.emif_ddr_ext_phy_ctrl_4        = 0x00B000B0,
+	.emif_ddr_ext_phy_ctrl_5        = 0x00B000B0,
+	.emif_rd_wr_lvl_rmp_win         = 0x00000000,
+	.emif_rd_wr_lvl_rmp_ctl         = 0x00000000,
+	.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,
@@ -267,6 +291,8 @@ static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
 		}
 		break;
 	case DRA722_ES1_0:
+		*regs = &emif_1_regs_ddr3_666_mhz_1cs_dra_es1;
+		break;
 	default:
 		*regs = &emif_1_regs_ddr3_532_mhz_1cs_dra_es1;
 	}
@@ -450,6 +476,35 @@ dra_ddr3_ext_phy_ctrl_const_base_es1_emif2[] = {
 	0x0
 };
 
+const u32
+dra_ddr3_ext_phy_ctrl_const_base_666MHz[] = {
+	0x00A400A4,
+	0x00390039,
+	0x00320032,
+	0x00320032,
+	0x00320032,
+	0x00440044,
+	0x00550055,
+	0x00550055,
+	0x00550055,
+	0x00550055,
+	0x007F007F,
+	0x004D004D,
+	0x00430043,
+	0x00560056,
+	0x00540054,
+	0x00600060,
+	0x0,
+	0x00600020,
+	0x40010080,
+	0x08102040,
+	0x0,
+	0x0,
+	0x0,
+	0x0,
+	0x0
+};
+
 const struct lpddr2_mr_regs mr_regs = {
 	.mr1	= MR1_BL_8_BT_SEQ_WRAP_EN_NWR_8,
 	.mr2	= 0x6,
@@ -478,7 +533,6 @@ static void emif_get_ext_phy_ctrl_const_regs(u32 emif_nr,
 		break;
 	case DRA752_ES1_0:
 	case DRA752_ES1_1:
-	case DRA722_ES1_0:
 		if (emif_nr == 1) {
 			*regs = dra_ddr3_ext_phy_ctrl_const_base_es1_emif1;
 			*size =
@@ -489,6 +543,10 @@ static void emif_get_ext_phy_ctrl_const_regs(u32 emif_nr,
 			ARRAY_SIZE(dra_ddr3_ext_phy_ctrl_const_base_es1_emif2);
 		}
 		break;
+	case DRA722_ES1_0:
+		*regs = dra_ddr3_ext_phy_ctrl_const_base_666MHz;
+		*size = ARRAY_SIZE(dra_ddr3_ext_phy_ctrl_const_base_666MHz);
+		break;
 	default:
 		*regs = ddr3_ext_phy_ctrl_const_base_es2;
 		*size = ARRAY_SIZE(ddr3_ext_phy_ctrl_const_base_es2);