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driver/ddr/fsl: Add DDR4 support to Freescale DDR driver

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Mostly reusing DDR3 driver, this patch adds DDR4 SPD handling, register
calculation and programming.

Signed-off-by: York Sun <yorksun@freescale.com>
This commit is contained in:
York Sun 2014-03-27 17:54:47 -07:00
parent 8d451a7129
commit 34e026f9b1
19 changed files with 2378 additions and 321 deletions
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75
include/fsl_ddr_dimm_params.h
View file

@ -1,5 +1,5 @@
/*
* Copyright 2008 Freescale Semiconductor, Inc.
* Copyright 2008-2014 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -13,7 +13,7 @@
#define EDC_ECC 2
#define EDC_AC_PARITY 4
/* Parameters for a DDR2 dimm computed from the SPD */
/* Parameters for a DDR dimm computed from the SPD */
typedef struct dimm_params_s {
/* DIMM organization parameters */
@ -32,7 +32,12 @@ typedef struct dimm_params_s {
unsigned int n_row_addr;
unsigned int n_col_addr;
unsigned int edc_config; /* 0 = none, 1 = parity, 2 = ECC */
#ifdef CONFIG_SYS_FSL_DDR4
unsigned int bank_addr_bits;
unsigned int bank_group_bits;
#else
unsigned int n_banks_per_sdram_device;
#endif
unsigned int burst_lengths_bitmask; /* BL=4 bit 2, BL=8 = bit 3 */
unsigned int row_density;
@ -43,19 +48,19 @@ typedef struct dimm_params_s {
/* DIMM timing parameters */
unsigned int mtb_ps; /* medium timebase ps, only for ddr3 */
unsigned int ftb_10th_ps; /* fine timebase, in 1/10 ps, only for ddr3 */
unsigned int taa_ps; /* minimum CAS latency time, only for ddr3 */
unsigned int tfaw_ps; /* four active window delay, only for ddr3 */
int mtb_ps; /* medium timebase ps */
int ftb_10th_ps; /* fine timebase, in 1/10 ps */
int taa_ps; /* minimum CAS latency time */
int tfaw_ps; /* four active window delay */
/*
* SDRAM clock periods
* The range for these are 1000-10000 so a short should be sufficient
*/
unsigned int tckmin_x_ps;
unsigned int tckmin_x_minus_1_ps;
unsigned int tckmin_x_minus_2_ps;
unsigned int tckmax_ps;
int tckmin_x_ps;
int tckmin_x_minus_1_ps;
int tckmin_x_minus_2_ps;
int tckmax_ps;
/* SPD-defined CAS latencies */
unsigned int caslat_x;
@ -65,32 +70,46 @@ typedef struct dimm_params_s {
unsigned int caslat_lowest_derated; /* Derated CAS latency */
/* basic timing parameters */
unsigned int trcd_ps;
unsigned int trp_ps;
unsigned int tras_ps;
int trcd_ps;
int trp_ps;
int tras_ps;
unsigned int twr_ps; /* maximum = 63750 ps */
unsigned int twtr_ps; /* maximum = 63750 ps */
unsigned int trfc_ps; /* max = 255 ns + 256 ns + .75 ns
#ifdef CONFIG_SYS_FSL_DDR4
int trfc1_ps;
int trfc2_ps;
int trfc4_ps;
int trrds_ps;
int trrdl_ps;
int tccdl_ps;
#else
int twr_ps; /* maximum = 63750 ps */
int trfc_ps; /* max = 255 ns + 256 ns + .75 ns
= 511750 ps */
int trrd_ps; /* maximum = 63750 ps */
int twtr_ps; /* maximum = 63750 ps */
int trtp_ps; /* byte 38, spd->trtp */
#endif
unsigned int trrd_ps; /* maximum = 63750 ps */
unsigned int trc_ps; /* maximum = 254 ns + .75 ns = 254750 ps */
int trc_ps; /* maximum = 254 ns + .75 ns = 254750 ps */
unsigned int refresh_rate_ps;
unsigned int extended_op_srt;
int refresh_rate_ps;
int extended_op_srt;
/* DDR3 doesn't need these as below */
unsigned int tis_ps; /* byte 32, spd->ca_setup */
unsigned int tih_ps; /* byte 33, spd->ca_hold */
unsigned int tds_ps; /* byte 34, spd->data_setup */
unsigned int tdh_ps; /* byte 35, spd->data_hold */
unsigned int trtp_ps; /* byte 38, spd->trtp */
unsigned int tdqsq_max_ps; /* byte 44, spd->tdqsq */
unsigned int tqhs_ps; /* byte 45, spd->tqhs */
#if defined(CONFIG_SYS_FSL_DDR1) || defined(CONFIG_SYS_FSL_DDR2)
int tis_ps; /* byte 32, spd->ca_setup */
int tih_ps; /* byte 33, spd->ca_hold */
int tds_ps; /* byte 34, spd->data_setup */
int tdh_ps; /* byte 35, spd->data_hold */
int tdqsq_max_ps; /* byte 44, spd->tdqsq */
int tqhs_ps; /* byte 45, spd->tqhs */
#endif
/* DDR3 RDIMM */
unsigned char rcw[16]; /* Register Control Word 0-15 */
#ifdef CONFIG_SYS_FSL_DDR4
unsigned int dq_mapping[18];
unsigned int dq_mapping_ors;
#endif
} dimm_params_t;
extern unsigned int ddr_compute_dimm_parameters(