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ARM: imx6: Adjust DDR DRAM settings on DHCOM i.MX6 PDK

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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>
This commit is contained in:
Marek Vasut 2017-11-09 11:50:13 +01:00 committed by Stefano Babic
parent c253573f3e
commit b979e35230
1 changed files with 20 additions and 20 deletions
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40
board/dhelectronics/dh_imx6/dh_imx6_spl.c
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@ -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. */