OMAP5: emif/ddr: Change emif settings as required for ES1.0 silicon.

The OMAP5 silicon has new DDR PHY design, which includes a external PHY
as well. So configuring the ext PHY parameters here. Also the EMIF timimg
registers and a couple of DDR mode registers needs to be updated based on
the testing from the actual silicon.
Signed-off-by: NR Sricharan <r.sricharan@ti.com>

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

@@ -459,6 +459,7 @@ void freq_update_core(void)
 {
 	u32 freq_config1 = 0;
 	const struct dpll_params *core_dpll_params;
+	u32 omap_rev = omap_revision();
 
 	core_dpll_params = get_core_dpll_params();
 	/* Put EMIF clock domain in sw wakeup mode */
@@ -484,11 +485,18 @@ void freq_update_core(void)
 		hang();
 	}
 
-	/* Put EMIF clock domain back in hw auto mode */
-	enable_clock_domain(&prcm->cm_memif_clkstctrl,
-				CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
-	wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
-	wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+	/*
+	 * Putting EMIF in HW_AUTO is seen to be causing issues with
+	 * EMIF clocks and the master DLL. Put EMIF in SW_WKUP
+	 * in OMAP5430 ES1.0 silicon
+	 */
+	if (omap_rev != OMAP5430_ES1_0) {
+		/* Put EMIF clock domain back in hw auto mode */
+		enable_clock_domain(&prcm->cm_memif_clkstctrl,
+					CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+		wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
+		wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+	}
 }
 
 void bypass_dpll(u32 *const base)

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

@@ -90,20 +90,33 @@ static void do_lpddr2_init(u32 base, u32 cs)
 	 * tZQINIT = 1 us
 	 * Enough loops assuming a maximum of 2GHz
 	 */
+
 	sdelay(2000);
-	set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3);
+
+	if (omap_revision() >= OMAP5430_ES1_0)
+		set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_8);
+	else
+		set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3);
+
 	set_mr(base, cs, LPDDR2_MR16, MR16_REF_FULL_ARRAY);
+
 	/*
 	 * Enable refresh along with writing MR2
 	 * Encoding of RL in MR2 is (RL - 2)
 	 */
 	mr_addr = LPDDR2_MR2 | EMIF_REG_REFRESH_EN_MASK;
 	set_mr(base, cs, mr_addr, RL_FINAL - 2);
+
+	if (omap_revision() >= OMAP5430_ES1_0)
+		set_mr(base, cs, LPDDR2_MR3, 0x1);
 }
 
 static void lpddr2_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;
 
 	/* Not NVM */
 	clrbits_le32(&emif->emif_lpddr2_nvm_config, EMIF_REG_CS1NVMEN_MASK);
@@ -119,7 +132,31 @@ static void lpddr2_init(u32 base, const struct emif_regs *regs)
 	 * un-locked frequency & default RL
 	 */
 	writel(regs->sdram_config_init, &emif->emif_sdram_config);
-	writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
+	writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1);
+
+	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);
+
+	if (omap_revision() >= OMAP5430_ES1_0) {
+		/* 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(ext_phy_ctrl_const_base[i],
+						emif_ext_phy_ctrl_base++);
+			/* Update shadow registers */
+			writel(ext_phy_ctrl_const_base[i],
+						emif_ext_phy_ctrl_base++);
+		}
+	}
 
 	do_lpddr2_init(base, CS0);
 	if (regs->sdram_config & EMIF_REG_EBANK_MASK)

arch/arm/cpu/armv7/omap4/sdram_elpida.c

@@ -89,6 +89,10 @@ const struct emif_regs emif_regs_elpida_400_mhz_2cs = {
 	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
 	.emif_ddr_phy_ctlr_1		= 0x049ff418
 };
+
+/* Dummy registers for OMAP44xx */
+const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG];
+
 const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2 = {
 	.dmm_lisa_map_0 = 0xFF020100,
 	.dmm_lisa_map_1 = 0,

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

@@ -48,31 +48,76 @@
  */
 
 #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
-
-const struct emif_regs emif_regs_elpida_532_mhz_1cs = {
-	.sdram_config_init		= 0x80801aB2,
-	.sdram_config			= 0x808022B2,
+const struct emif_regs emif_regs_elpida_532_mhz_2cs = {
+	.sdram_config_init		= 0x80800EBA,
+	.sdram_config			= 0x808022BA,
 	.ref_ctrl			= 0x0000081A,
 	.sdram_tim1			= 0x772F6873,
-	.sdram_tim2			= 0x304A129A,
-	.sdram_tim3			= 0x02F7E45F,
+	.sdram_tim2			= 0x304a129a,
+	.sdram_tim3			= 0x02f7e45f,
+	.read_idle_ctrl			= 0x00050000,
+	.zq_config			= 0x000b3215,
+	.temp_alert_config		= 0x08000a05,
+	.emif_ddr_phy_ctlr_1_init	= 0x0E28420d,
+	.emif_ddr_phy_ctlr_1		= 0x0E28420d,
+	.emif_ddr_ext_phy_ctrl_1	= 0x04020080,
+	.emif_ddr_ext_phy_ctrl_2	= 0x28C518A3,
+	.emif_ddr_ext_phy_ctrl_3	= 0x518A3146,
+	.emif_ddr_ext_phy_ctrl_4	= 0x0014628C,
+	.emif_ddr_ext_phy_ctrl_5	= 0x04010040
+};
+
+const struct emif_regs emif_regs_elpida_266_mhz_2cs = {
+	.sdram_config_init		= 0x80800EBA,
+	.sdram_config			= 0x808022BA,
+	.ref_ctrl			= 0x0000040D,
+	.sdram_tim1			= 0x2A86B419,
+	.sdram_tim2			= 0x1025094A,
+	.sdram_tim3			= 0x026BA22F,
 	.read_idle_ctrl			= 0x00050000,
-	.zq_config			= 0x000B3215,
-	.temp_alert_config		= 0x08000A05,
-	.emif_ddr_phy_ctlr_1_init	= 0x0E38200D,
-	.emif_ddr_phy_ctlr_1		= 0x0E38200D
+	.zq_config			= 0x000b3215,
+	.temp_alert_config		= 0x08000a05,
+	.emif_ddr_phy_ctlr_1_init	= 0x0E28420d,
+	.emif_ddr_phy_ctlr_1		= 0x0E28420d,
+	.emif_ddr_ext_phy_ctrl_1	= 0x04020080,
+	.emif_ddr_ext_phy_ctrl_2	= 0x0A414829,
+	.emif_ddr_ext_phy_ctrl_3	= 0x14829052,
+	.emif_ddr_ext_phy_ctrl_4	= 0x000520A4,
+	.emif_ddr_ext_phy_ctrl_5	= 0x04010040
 };
 
-const struct dmm_lisa_map_regs lisa_map_4G_x_1_x_2 = {
-	.dmm_lisa_map_0 = 0xFF020100,
+const struct dmm_lisa_map_regs lisa_map_4G_x_2_x_2 = {
+	.dmm_lisa_map_0 = 0x0,
 	.dmm_lisa_map_1 = 0,
 	.dmm_lisa_map_2 = 0,
-	.dmm_lisa_map_3 = 0x80640300
+	.dmm_lisa_map_3 = 0x80740300
+};
+
+const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG] = {
+	0x01004010,
+	0x00001004,
+	0x04010040,
+	0x01004010,
+	0x00001004,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x80080080,
+	0x00800800,
+	0x08102040,
+	0x00000001,
+	0x540A8150,
+	0xA81502a0,
+	0x002A0540,
+	0x00000000,
+	0x00000000,
+	0x00000000,
+	0x00000077
 };
 
 static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
 {
-	*regs = &emif_regs_elpida_532_mhz_1cs;
+	*regs = &emif_regs_elpida_532_mhz_2cs;
 }
 void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 	__attribute__((weak, alias("emif_get_reg_dump_sdp")));
@@ -80,7 +125,7 @@ void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
 						**dmm_lisa_regs)
 {
-	*dmm_lisa_regs = &lisa_map_4G_x_1_x_2;
+	*dmm_lisa_regs = &lisa_map_4G_x_2_x_2;
 }
 
 void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
@@ -101,9 +146,7 @@ static void emif_get_device_details_sdp(u32 emif_nr,
 {
 	/* EMIF1 & EMIF2 have identical configuration */
 	*cs0_device_details = elpida_4G_S4_details;
-
-	/* Nothing is conected on cs1 */
-	cs1_device_details = NULL;
+	*cs1_device_details = elpida_4G_S4_details;
 }
 
 void emif_get_device_details(u32 emif_nr,
@@ -167,7 +210,7 @@ void emif_get_device_timings_sdp(u32 emif_nr,
 {
 	/* Identical devices on EMIF1 & EMIF2 */
 	*cs0_device_timings = &elpida_4G_S4_timings;
-	*cs1_device_timings = NULL;
+	*cs1_device_timings = &elpida_4G_S4_timings;
 }
 
 void emif_get_device_timings(u32 emif_nr,

arch/arm/include/asm/emif.h

@@ -530,6 +530,8 @@
 	(DMM_SDRC_INTL_NONE << EMIF_SDRC_INTL_SHIFT)|\
 	(0xFF << EMIF_SYS_ADDR_SHIFT))
 
+#define EMIF_EXT_PHY_CTRL_TIMING_REG	0x5
+#define EMIF_EXT_PHY_CTRL_CONST_REG	0x13
 
 /* Reg mapping structure */
 struct emif_reg_struct {
@@ -580,10 +582,64 @@ struct emif_reg_struct {
 	u32 emif_zq_config;
 	u32 emif_temp_alert_config;
 	u32 emif_l3_err_log;
-	u32 padding6[4];
+	u32 emif_rd_wr_lvl_rmp_win;
+	u32 emif_rd_wr_lvl_rmp_ctl;
+	u32 emif_rd_wr_lvl_ctl;
+	u32 padding6[1];
 	u32 emif_ddr_phy_ctrl_1;
 	u32 emif_ddr_phy_ctrl_1_shdw;
 	u32 emif_ddr_phy_ctrl_2;
+	u32 padding7[12];
+	u32 emif_rd_wr_exec_thresh;
+	u32 padding8[55];
+	u32 emif_ddr_ext_phy_ctrl_1;
+	u32 emif_ddr_ext_phy_ctrl_1_shdw;
+	u32 emif_ddr_ext_phy_ctrl_2;
+	u32 emif_ddr_ext_phy_ctrl_2_shdw;
+	u32 emif_ddr_ext_phy_ctrl_3;
+	u32 emif_ddr_ext_phy_ctrl_3_shdw;
+	u32 emif_ddr_ext_phy_ctrl_4;
+	u32 emif_ddr_ext_phy_ctrl_4_shdw;
+	u32 emif_ddr_ext_phy_ctrl_5;
+	u32 emif_ddr_ext_phy_ctrl_5_shdw;
+	u32 emif_ddr_ext_phy_ctrl_6;
+	u32 emif_ddr_ext_phy_ctrl_6_shdw;
+	u32 emif_ddr_ext_phy_ctrl_7;
+	u32 emif_ddr_ext_phy_ctrl_7_shdw;
+	u32 emif_ddr_ext_phy_ctrl_8;
+	u32 emif_ddr_ext_phy_ctrl_8_shdw;
+	u32 emif_ddr_ext_phy_ctrl_9;
+	u32 emif_ddr_ext_phy_ctrl_9_shdw;
+	u32 emif_ddr_ext_phy_ctrl_10;
+	u32 emif_ddr_ext_phy_ctrl_10_shdw;
+	u32 emif_ddr_ext_phy_ctrl_11;
+	u32 emif_ddr_ext_phy_ctrl_11_shdw;
+	u32 emif_ddr_ext_phy_ctrl_12;
+	u32 emif_ddr_ext_phy_ctrl_12_shdw;
+	u32 emif_ddr_ext_phy_ctrl_13;
+	u32 emif_ddr_ext_phy_ctrl_13_shdw;
+	u32 emif_ddr_ext_phy_ctrl_14;
+	u32 emif_ddr_ext_phy_ctrl_14_shdw;
+	u32 emif_ddr_ext_phy_ctrl_15;
+	u32 emif_ddr_ext_phy_ctrl_15_shdw;
+	u32 emif_ddr_ext_phy_ctrl_16;
+	u32 emif_ddr_ext_phy_ctrl_16_shdw;
+	u32 emif_ddr_ext_phy_ctrl_17;
+	u32 emif_ddr_ext_phy_ctrl_17_shdw;
+	u32 emif_ddr_ext_phy_ctrl_18;
+	u32 emif_ddr_ext_phy_ctrl_18_shdw;
+	u32 emif_ddr_ext_phy_ctrl_19;
+	u32 emif_ddr_ext_phy_ctrl_19_shdw;
+	u32 emif_ddr_ext_phy_ctrl_20;
+	u32 emif_ddr_ext_phy_ctrl_20_shdw;
+	u32 emif_ddr_ext_phy_ctrl_21;
+	u32 emif_ddr_ext_phy_ctrl_21_shdw;
+	u32 emif_ddr_ext_phy_ctrl_22;
+	u32 emif_ddr_ext_phy_ctrl_22_shdw;
+	u32 emif_ddr_ext_phy_ctrl_23;
+	u32 emif_ddr_ext_phy_ctrl_23_shdw;
+	u32 emif_ddr_ext_phy_ctrl_24;
+	u32 emif_ddr_ext_phy_ctrl_24_shdw;
 };
 
 struct dmm_lisa_map_regs {
@@ -593,6 +649,8 @@ struct dmm_lisa_map_regs {
 	u32 dmm_lisa_map_3;
 };
 
+extern const u32 ext_phy_ctrl_const_base[EMIF_EXT_PHY_CTRL_CONST_REG];
+
 #define CS0	0
 #define CS1	1
 /* The maximum frequency at which the LPDDR2 interface can operate in Hz*/
@@ -748,7 +806,11 @@ 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		0xF
 #define REG_PD_TIM		0xF
 
@@ -776,7 +838,7 @@ struct dmm_lisa_map_regs {
 /* EMIF_L3_CONFIG register value */
 #define EMIF_L3_CONFIG_VAL_SYS_10_LL_0	0x0A0000FF
 #define EMIF_L3_CONFIG_VAL_SYS_10_MPU_3_LL_0	0x0A300000
-#define EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0	0x0A300000
+#define EMIF_L3_CONFIG_VAL_SYS_10_MPU_5_LL_0	0x0A500000
 
 /*
  * Value of bits 12:31 of DDR_PHY_CTRL_1 register:
@@ -798,6 +860,7 @@ struct dmm_lisa_map_regs {
 *		: So nWR is don't care
 */
 #define MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3	0x23
+#define MR1_BL_8_BT_SEQ_WRAP_EN_NWR_8	0xc3
 
 /* MR2 */
 #define MR2_RL3_WL1			1
@@ -1005,6 +1068,11 @@ struct emif_regs {
 	u32 temp_alert_config;
 	u32 emif_ddr_phy_ctlr_1_init;
 	u32 emif_ddr_phy_ctlr_1;
+	u32 emif_ddr_ext_phy_ctrl_1;
+	u32 emif_ddr_ext_phy_ctrl_2;
+	u32 emif_ddr_ext_phy_ctrl_3;
+	u32 emif_ddr_ext_phy_ctrl_4;
+	u32 emif_ddr_ext_phy_ctrl_5;
 };
 
 /* assert macros */