board: ti: am57xx: Update EMIF SDRAM 1 and 3 Timings

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@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index a5f02e6..02925f6 100644 (file)
--- 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,