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author | York Sun <yorksun@freescale.com> | 2015-03-19 09:30:26 -0700 |
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committer | York Sun <yorksun@freescale.com> | 2015-04-23 08:55:53 -0700 |
commit | 66869f955417b89dbf6b7cbb72738b2205a26bf8 (patch) | |
tree | 669eca4ca7d0e4d6d62ce480455d346f2b192f2f /drivers/ddr | |
parent | f8cb101e1e3f5ee2007b78b6b12e24120385aeac (diff) | |
download | u-boot-imx-66869f955417b89dbf6b7cbb72738b2205a26bf8.zip u-boot-imx-66869f955417b89dbf6b7cbb72738b2205a26bf8.tar.gz u-boot-imx-66869f955417b89dbf6b7cbb72738b2205a26bf8.tar.bz2 |
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>
Diffstat (limited to 'drivers/ddr')
-rw-r--r-- | drivers/ddr/fsl/ctrl_regs.c | 17 | ||||
-rw-r--r-- | drivers/ddr/fsl/interactive.c | 51 | ||||
-rw-r--r-- | drivers/ddr/fsl/main.c | 2 | ||||
-rw-r--r-- | drivers/ddr/fsl/util.c | 28 |
4 files changed, 88 insertions, 10 deletions
diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c index 3919257..a59824c 100644 --- a/drivers/ddr/fsl/ctrl_regs.c +++ b/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; diff --git a/drivers/ddr/fsl/interactive.c b/drivers/ddr/fsl/interactive.c index 32ba6d8..57d14e8 100644 --- a/drivers/ddr/fsl/interactive.c +++ b/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), @@ -347,6 +375,27 @@ static void print_dimm_parameters(const dimm_params_t *pdimm) 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); diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c index b72b242..fa22383 100644 --- a/drivers/ddr/fsl/main.c +++ b/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); diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c index 664081b..ce55aea 100644 --- a/drivers/ddr/fsl/util.c +++ b/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; |