[U-Boot] [PATCH] board: ti: am57xx: Update EMIF SDRAM 1 and 3 Timings
Nishanth Menon
nm at ti.com
Fri Apr 8 23:53:44 CEST 2016
From: Schuyler Patton <spatton at ti.com>
Update EMIF data based on recommendations from the now standard TI
EMIF tool version 1.1.1 based on 256MBx16 DDR3L Kingston D2516EC4BXGGB
data sheet
Update T_RRD from 5 to 6 based on AM57xx TRM -
Minimum number of DDR cycles from activate to ativate for a different
bank, minus 1.
Update T_CKESR from 4 to 3 based on AM57xx TRM - Minimum number of DDR
clocks cycles for which SDRAM must remain in self refresh, minus 1.
Signed-off-by: Schuyler Patton <spatton at ti.com>
Signed-off-by: Nishanth Menon <nm at ti.com>
---
X15 BOM:
https://github.com/beagleboard/beagleboard-x15/blob/master/BeagleBoard-X15_RevA2B_BOM.xlsx
AM5728 Data sheet: http://www.ti.com/product/AM5728/datasheet
board/ti/am57xx/board.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index 18416ef64ad9..fda0ed59c6b7 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -131,9 +131,9 @@ static const struct emif_regs beagle_x15_emif2_ddr3_532mhz_emif_regs = {
.sdram_config2 = 0x08000000,
.ref_ctrl = 0x000040F1,
.ref_ctrl_final = 0x00001035,
- .sdram_tim1 = 0xcccf36ab,
+ .sdram_tim1 = 0xcccf36b3,
.sdram_tim2 = 0x308f7fda,
- .sdram_tim3 = 0x409f88a8,
+ .sdram_tim3 = 0x407f88a8,
.read_idle_ctrl = 0x00050000,
.zq_config = 0x5007190b,
.temp_alert_config = 0x00000000,
--
2.8.0
More information about the U-Boot
mailing list