Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-09 03:21:51 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

driver/ddr/fsl: Fix tXP and tCKE

Browse source 
The driver was written using old DDR3 spec which only covers low speeds.
The value would be suboptimal for higher speeds. Fix both timing according
to latest DDR3 spec, remove tCKE as an config option.

Signed-off-by: York Sun <yorksun@freescale.com>
This commit is contained in:
York Sun 2014-08-21 16:13:22 -07:00
parent d9c68b1444
commit bb5783224b
4 changed files with 22 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/fsl_ddr_sdram.h
View file

@ -51,7 +51,6 @@ typedef ddr2_spd_eeprom_t generic_spd_eeprom_t;
#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR2
#endif
#elif defined(CONFIG_SYS_FSL_DDR3)
#define FSL_DDR_MIN_TCKE_PULSE_WIDTH_DDR (3) /* FIXME */
typedef ddr3_spd_eeprom_t generic_spd_eeprom_t;
#ifndef CONFIG_FSL_SDRAM_TYPE
#define CONFIG_FSL_SDRAM_TYPE SDRAM_TYPE_DDR3
@ -352,7 +351,6 @@ typedef struct memctl_options_s {
unsigned int twot_en;
unsigned int threet_en;
unsigned int bstopre;
unsigned int tcke_clock_pulse_width_ps; /* tCKE */
unsigned int tfaw_window_four_activates_ps; /* tFAW -- FOUR_ACT */
/* Rtt impedance */