drivers/ddr/fsl: Update DDR driver for DDR4

Add/update registers for DDR4, including DQ mappings. Allow raw timing
method used for all controllers. Update mode_9 register to 0x500 for
improved stability. Check DDR controller version number individually
in case a SoC has multiple DDR controllers of different versions.
Increase read-write turnaround for DDR4 high speeds.

Signed-off-by: York Sun <yorksun@freescale.com>

drivers/ddr/fsl/ctrl_regs.c

@@ -313,7 +313,10 @@ static void set_timing_cfg_0(const unsigned int ctrl_num,
 #ifdef CONFIG_SYS_FSL_DDR4
 	/* tXP=max(4nCK, 6ns) */
 	int txp = max((int)mclk_ps * 4, 6000); /* unit=ps */
-	trwt_mclk = 2;
+	unsigned int data_rate = get_ddr_freq(ctrl_num);
+
+	/* for faster clock, need more time for data setup */
+	trwt_mclk = (data_rate/1000000 > 1900) ? 3 : 2;
 	twrt_mclk = 1;
 	act_pd_exit_mclk = picos_to_mclk(ctrl_num, txp);
 	pre_pd_exit_mclk = act_pd_exit_mclk;
@@ -338,7 +341,7 @@ static void set_timing_cfg_0(const unsigned int ctrl_num,
 	 */
 	txp = max((int)mclk_ps * 3, (mclk_ps > 1540 ? 7500 : 6000));
 
-	ip_rev = fsl_ddr_get_version();
+	ip_rev = fsl_ddr_get_version(ctrl_num);
 	if (ip_rev >= 0x40700) {
 		/*
 		 * MRS_CYC = max(tMRD, tMOD)
@@ -544,7 +547,7 @@ static void set_timing_cfg_1(const unsigned int ctrl_num,
 	 * we need set extend bit for it at
 	 * TIMING_CFG_3[EXT_CASLAT]
 	 */
-	if (fsl_ddr_get_version() <= 0x40400)
+	if (fsl_ddr_get_version(ctrl_num) <= 0x40400)
 		caslat_ctrl = 2 * cas_latency - 1;
 	else
 		caslat_ctrl = (cas_latency - 1) << 1;
@@ -1114,12 +1117,16 @@ static void set_ddr_sdram_mode_9(fsl_ddr_cfg_regs_t *ddr,
 	unsigned short esdmode4 = 0;	/* Extended SDRAM mode 4 */
 	unsigned short esdmode5;	/* Extended SDRAM mode 5 */
 
-	esdmode5 = 0x00000400;		/* Data mask enabled */
+	esdmode5 = 0x00000500;		/* Data mask enabled */
 
 	ddr->ddr_sdram_mode_9 = (0
 				 | ((esdmode4 & 0xffff) << 16)
 				 | ((esdmode5 & 0xffff) << 0)
 				);
+
+	/* only mode_9 use 0x500, others use 0x400 */
+	esdmode5 = 0x00000400;		/* Data mask enabled */
+
 	debug("FSLDDR: ddr_sdram_mode_9) = 0x%08x\n", ddr->ddr_sdram_mode_9);
 	if (unq_mrs_en) {	/* unique mode registers are supported */
 		for (i = 1; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
@@ -2357,7 +2364,7 @@ compute_fsl_memctl_config_regs(const unsigned int ctrl_num,
 	set_ddr_cdr1(ddr, popts);
 	set_ddr_cdr2(ddr, popts);
 	set_ddr_sdram_cfg(ddr, popts, common_dimm);
-	ip_rev = fsl_ddr_get_version();
+	ip_rev = fsl_ddr_get_version(ctrl_num);
 	if (ip_rev > 0x40400)
 		unq_mrs_en = 1;
 

drivers/ddr/fsl/interactive.c

@@ -205,6 +205,8 @@ static void lowest_common_dimm_parameters_edit(fsl_ddr_info_t *pinfo,
 
 #define DIMM_PARM(x) {#x, offsetof(dimm_params_t, x), \
 	sizeof((dimm_params_t *)0)->x, 0}
+#define DIMM_PARM_HEX(x) {#x, offsetof(dimm_params_t, x), \
+	sizeof((dimm_params_t *)0)->x, 1}
 
 static void fsl_ddr_dimm_parameters_edit(fsl_ddr_info_t *pinfo,
 				   unsigned int ctrl_num,
@@ -220,6 +222,7 @@ static void fsl_ddr_dimm_parameters_edit(fsl_ddr_info_t *pinfo,
 		DIMM_PARM(primary_sdram_width),
 		DIMM_PARM(ec_sdram_width),
 		DIMM_PARM(registered_dimm),
+		DIMM_PARM(mirrored_dimm),
 		DIMM_PARM(device_width),
 
 		DIMM_PARM(n_row_addr),
@@ -274,7 +277,27 @@ static void fsl_ddr_dimm_parameters_edit(fsl_ddr_info_t *pinfo,
 		DIMM_PARM(tdqsq_max_ps),
 		DIMM_PARM(tqhs_ps),
 #endif
-
+#ifdef CONFIG_SYS_FSL_DDR4
+		DIMM_PARM_HEX(dq_mapping[0]),
+		DIMM_PARM_HEX(dq_mapping[1]),
+		DIMM_PARM_HEX(dq_mapping[2]),
+		DIMM_PARM_HEX(dq_mapping[3]),
+		DIMM_PARM_HEX(dq_mapping[4]),
+		DIMM_PARM_HEX(dq_mapping[5]),
+		DIMM_PARM_HEX(dq_mapping[6]),
+		DIMM_PARM_HEX(dq_mapping[7]),
+		DIMM_PARM_HEX(dq_mapping[8]),
+		DIMM_PARM_HEX(dq_mapping[9]),
+		DIMM_PARM_HEX(dq_mapping[10]),
+		DIMM_PARM_HEX(dq_mapping[11]),
+		DIMM_PARM_HEX(dq_mapping[12]),
+		DIMM_PARM_HEX(dq_mapping[13]),
+		DIMM_PARM_HEX(dq_mapping[14]),
+		DIMM_PARM_HEX(dq_mapping[15]),
+		DIMM_PARM_HEX(dq_mapping[16]),
+		DIMM_PARM_HEX(dq_mapping[17]),
+		DIMM_PARM(dq_mapping_ors),
+#endif
 		DIMM_PARM(rank_density),
 		DIMM_PARM(capacity),
 		DIMM_PARM(base_address),
@@ -296,6 +319,7 @@ static void print_dimm_parameters(const dimm_params_t *pdimm)
 		DIMM_PARM(primary_sdram_width),
 		DIMM_PARM(ec_sdram_width),
 		DIMM_PARM(registered_dimm),
+		DIMM_PARM(mirrored_dimm),
 		DIMM_PARM(device_width),
 
 		DIMM_PARM(n_row_addr),
@@ -314,6 +338,7 @@ static void print_dimm_parameters(const dimm_params_t *pdimm)
 		DIMM_PARM(tckmax_ps),
 
 		DIMM_PARM(caslat_x),
+		DIMM_PARM_HEX(caslat_x),
 		DIMM_PARM(taa_ps),
 		DIMM_PARM(caslat_x_minus_1),
 		DIMM_PARM(caslat_x_minus_2),
@@ -322,6 +347,9 @@ static void print_dimm_parameters(const dimm_params_t *pdimm)
 		DIMM_PARM(trcd_ps),
 		DIMM_PARM(trp_ps),
 		DIMM_PARM(tras_ps),
+#if defined(CONFIG_SYS_FSL_DDR4) || defined(CONFIG_SYS_FSL_DDR3)
+		DIMM_PARM(tfaw_ps),
+#endif
 #ifdef CONFIG_SYS_FSL_DDR4
 		DIMM_PARM(trfc1_ps),
 		DIMM_PARM(trfc2_ps),
@@ -346,6 +374,27 @@ static void print_dimm_parameters(const dimm_params_t *pdimm)
 		DIMM_PARM(tdh_ps),
 		DIMM_PARM(tdqsq_max_ps),
 		DIMM_PARM(tqhs_ps),
+#endif
+#ifdef CONFIG_SYS_FSL_DDR4
+		DIMM_PARM_HEX(dq_mapping[0]),
+		DIMM_PARM_HEX(dq_mapping[1]),
+		DIMM_PARM_HEX(dq_mapping[2]),
+		DIMM_PARM_HEX(dq_mapping[3]),
+		DIMM_PARM_HEX(dq_mapping[4]),
+		DIMM_PARM_HEX(dq_mapping[5]),
+		DIMM_PARM_HEX(dq_mapping[6]),
+		DIMM_PARM_HEX(dq_mapping[7]),
+		DIMM_PARM_HEX(dq_mapping[8]),
+		DIMM_PARM_HEX(dq_mapping[9]),
+		DIMM_PARM_HEX(dq_mapping[10]),
+		DIMM_PARM_HEX(dq_mapping[11]),
+		DIMM_PARM_HEX(dq_mapping[12]),
+		DIMM_PARM_HEX(dq_mapping[13]),
+		DIMM_PARM_HEX(dq_mapping[14]),
+		DIMM_PARM_HEX(dq_mapping[15]),
+		DIMM_PARM_HEX(dq_mapping[16]),
+		DIMM_PARM_HEX(dq_mapping[17]),
+		DIMM_PARM(dq_mapping_ors),
 #endif
 	};
 	static const unsigned int n_opts = ARRAY_SIZE(options);

drivers/ddr/fsl/main.c

@@ -453,7 +453,7 @@ fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
 				retval = compute_dimm_parameters(
 							i, spd, pdimm, j);
 #ifdef CONFIG_SYS_DDR_RAW_TIMING
-				if (!i && !j && retval) {
+				if (!j && retval) {
 					printf("SPD error on controller %d! "
 					"Trying fallback to raw timing "
 					"calculation\n", i);

drivers/ddr/fsl/util.c

@@ -23,12 +23,34 @@
 
 #define ULL_8FS 0xFFFFFFFFULL
 
-u32 fsl_ddr_get_version(void)
+u32 fsl_ddr_get_version(unsigned int ctrl_num)
 {
 	struct ccsr_ddr __iomem *ddr;
 	u32 ver_major_minor_errata;
 
-	ddr = (void *)_DDR_ADDR;
+	switch (ctrl_num) {
+	case 0:
+		ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
+		break;
+#if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
+	case 1:
+		ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
+		break;
+#endif
+#if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
+	case 2:
+		ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
+		break;
+#endif
+#if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
+	case 3:
+		ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
+		break;
+#endif
+	default:
+		printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num);
+		return 0;
+	}
 	ver_major_minor_errata = (ddr_in32(&ddr->ip_rev1) & 0xFFFF) << 8;
 	ver_major_minor_errata |= (ddr_in32(&ddr->ip_rev2) & 0xFF00) >> 8;
 
@@ -212,7 +234,7 @@ void print_ddr_info(unsigned int start_ctrl)
 
 	/* Calculate CAS latency based on timing cfg values */
 	cas_lat = ((ddr_in32(&ddr->timing_cfg_1) >> 16) & 0xf);
-	if (fsl_ddr_get_version() <= 0x40400)
+	if (fsl_ddr_get_version(0) <= 0x40400)
 		cas_lat += 1;
 	else
 		cas_lat += 2;

include/fsl_ddr.h

@@ -34,9 +34,7 @@
 #define ddr_clrsetbits32(a, clear, set)	clrsetbits_be32(a, clear, set)
 #endif
 
-#define _DDR_ADDR CONFIG_SYS_FSL_DDR_ADDR
-
-u32 fsl_ddr_get_version(void);
+u32 fsl_ddr_get_version(unsigned int ctrl_num);
 
 #if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM)
 /*