The board uses T-topology for the four x16 DRAM chips, so remove the write-leveling from the SPL as that is only usefly on fly-by topology and can be harmful on T-topology. Also update the DRAM timing with values from calibration on multiple boards.
Signed-off-by: Marek Vasut marex@denx.de Cc: Stefano Babic sbabic@denx.de --- board/dhelectronics/dh_imx6/dh_imx6_spl.c | 40 +++++++++++++++---------------- 1 file changed, 20 insertions(+), 20 deletions(-)
diff --git a/board/dhelectronics/dh_imx6/dh_imx6_spl.c b/board/dhelectronics/dh_imx6/dh_imx6_spl.c index e22ff5c8c6..bb98f39f02 100644 --- a/board/dhelectronics/dh_imx6/dh_imx6_spl.c +++ b/board/dhelectronics/dh_imx6/dh_imx6_spl.c @@ -140,40 +140,39 @@ static const struct mx6sdl_iomux_grp_regs dhcom6sdl_grp_ioregs = { };
static const struct mx6_mmdc_calibration dhcom_mmdc_calib = { - .p0_mpwldectrl0 = 0x001F001F, - .p0_mpwldectrl1 = 0x001F001F, - .p1_mpwldectrl0 = 0x00440044, - .p1_mpwldectrl1 = 0x00440044, - .p0_mpdgctrl0 = 0x434B0350, - .p0_mpdgctrl1 = 0x034C0359, - .p1_mpdgctrl0 = 0x434B0350, - .p1_mpdgctrl1 = 0x03650348, - .p0_mprddlctl = 0x4436383B, - .p1_mprddlctl = 0x39393341, - .p0_mpwrdlctl = 0x35373933, - .p1_mpwrdlctl = 0x48254A36, + .p0_mpwldectrl0 = 0x0011000E, + .p0_mpwldectrl1 = 0x000E001B, + .p1_mpwldectrl0 = 0x00190015, + .p1_mpwldectrl1 = 0x00070018, + .p0_mpdgctrl0 = 0x42720306, + .p0_mpdgctrl1 = 0x026F0266, + .p1_mpdgctrl0 = 0x4273030A, + .p1_mpdgctrl1 = 0x02740240, + .p0_mprddlctl = 0x45393B3E, + .p1_mprddlctl = 0x403A3747, + .p0_mpwrdlctl = 0x40434541, + .p1_mpwrdlctl = 0x473E4A3B, };
static const struct mx6_ddr3_cfg dhcom_mem_ddr = { .mem_speed = 1600, - .density = 4, + .density = 2, .width = 64, .banks = 8, .rowaddr = 14, .coladdr = 10, .pagesz = 2, - .trcd = 1375, - .trcmin = 4875, - .trasmin = 3500, + .trcd = 1312, + .trcmin = 5863, + .trasmin = 3750, };
static const struct mx6_ddr_sysinfo dhcom_ddr_info = { /* width of data bus:0=16,1=32,2=64 */ .dsize = 2, - /* config for full 4GB range so that get_mem_size() works */ - .cs_density = 32, /* 32Gb per CS */ + .cs_density = 16, .ncs = 1, /* single chip select */ - .cs1_mirror = 0, + .cs1_mirror = 1, .rtt_wr = 1, /* DDR3_RTT_60_OHM, RTT_Wr = RZQ/4 */ .rtt_nom = 1, /* DDR3_RTT_60_OHM, RTT_Nom = RZQ/4 */ .walat = 1, /* Write additional latency */ @@ -182,6 +181,8 @@ static const struct mx6_ddr_sysinfo dhcom_ddr_info = { .bi_on = 1, /* Bank interleaving enabled */ .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 3, /* 4 refresh commands per refresh cycle */ };
static void ccgr_init(void) @@ -388,7 +389,6 @@ void board_init_f(ulong dummy)
/* Perform DDR DRAM calibration */ udelay(100); - mmdc_do_write_level_calibration(&dhcom_ddr_info); mmdc_do_dqs_calibration(&dhcom_ddr_info);
/* Clear the BSS. */