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ARM: imx6: DHCOM i.MX6 PDK: ddr init for 32bit bus and 4GBit chips

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Support 1GIB + 2GIB DDR3 with 64bit bus width and 512MIB + 1GIB with 32bit bus width

Signed-off-by: Ludwig Zenz <lzenz@dh-electronics.de>
This commit is contained in:
Ludwig Zenz 2018-07-05 09:23:48 +02:00 committed by Stefano Babic
parent 659ca2dd08
commit 0481bef035
1 changed files with 173 additions and 18 deletions
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191
board/dhelectronics/dh_imx6/dh_imx6_spl.c
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@ -136,7 +136,31 @@ static const struct mx6sdl_iomux_grp_regs dhcom6sdl_grp_ioregs = {
.grp_b7ds = 0x00000030,
};
static const struct mx6_mmdc_calibration dhcom_mmdc_calib = {
static const struct mx6_mmdc_calibration dhcom_mmdc_calib_4x4g_1066 = {
.p0_mpwldectrl0 = 0x00150019,
.p0_mpwldectrl1 = 0x001C000B,
.p1_mpwldectrl0 = 0x00020018,
.p1_mpwldectrl1 = 0x0002000C,
.p0_mpdgctrl0 = 0x43140320,
.p0_mpdgctrl1 = 0x03080304,
.p1_mpdgctrl0 = 0x43180320,
.p1_mpdgctrl1 = 0x03100254,
.p0_mprddlctl = 0x4830383C,
.p1_mprddlctl = 0x3836323E,
.p0_mpwrdlctl = 0x3E444642,
.p1_mpwrdlctl = 0x42344442,
};
static const struct mx6_mmdc_calibration dhcom_mmdc_calib_2x4g_800 = {
.p0_mpwldectrl0 = 0x0040003C,
.p0_mpwldectrl1 = 0x0032003E,
.p0_mpdgctrl0 = 0x42350231,
.p0_mpdgctrl1 = 0x021A0218,
.p0_mprddlctl = 0x4B4B4E49,
.p0_mpwrdlctl = 0x3F3F3035,
};
static const struct mx6_mmdc_calibration dhcom_mmdc_calib_4x2g_1066 = {
.p0_mpwldectrl0 = 0x0011000E,
.p0_mpwldectrl1 = 0x000E001B,
.p1_mpwldectrl0 = 0x00190015,
@ -151,23 +175,89 @@ static const struct mx6_mmdc_calibration dhcom_mmdc_calib = {
.p1_mpwrdlctl = 0x473E4A3B,
};
static const struct mx6_ddr3_cfg dhcom_mem_ddr = {
static const struct mx6_mmdc_calibration dhcom_mmdc_calib_4x2g_800 = {
.p0_mpwldectrl0 = 0x003A003A,
.p0_mpwldectrl1 = 0x0030002F,
.p1_mpwldectrl0 = 0x002F0038,
.p1_mpwldectrl1 = 0x00270039,
.p0_mpdgctrl0 = 0x420F020F,
.p0_mpdgctrl1 = 0x01760175,
.p1_mpdgctrl0 = 0x41640171,
.p1_mpdgctrl1 = 0x015E0160,
.p0_mprddlctl = 0x45464B4A,
.p1_mprddlctl = 0x49484A46,
.p0_mpwrdlctl = 0x40402E32,
.p1_mpwrdlctl = 0x3A3A3231,
};
static const struct mx6_mmdc_calibration dhcom_mmdc_calib_2x2g_800 = {
.p0_mpwldectrl0 = 0x0040003C,
.p0_mpwldectrl1 = 0x0032003E,
.p0_mpdgctrl0 = 0x42350231,
.p0_mpdgctrl1 = 0x021A0218,
.p0_mprddlctl = 0x4B4B4E49,
.p0_mpwrdlctl = 0x3F3F3035,
};
/*
* 2 Gbit DDR3 memory
* - NANYA #NT5CC128M16IP-DII
* - NANYA #NT5CB128M16FP-DII
*/
static const struct mx6_ddr3_cfg dhcom_mem_ddr_2g = {
.mem_speed = 1600,
.density = 2,
.width = 64,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1312,
.trcd = 1375,
.trcmin = 5863,
.trasmin = 3750,
};
static const struct mx6_ddr_sysinfo dhcom_ddr_info = {
/*
* 4 Gbit DDR3 memory
* - Intelligent Memory #IM4G16D3EABG-125I
*/
static const struct mx6_ddr3_cfg dhcom_mem_ddr_4g = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
/* DDR3 64bit */
static const struct mx6_ddr_sysinfo dhcom_ddr_64bit = {
/* width of data bus:0=16,1=32,2=64 */
.dsize = 2,
.cs_density = 16,
.cs_density = 32,
.ncs = 1, /* single chip select */
.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 */
.ralat = 5, /* Read additional latency */
.mif3_mode = 3, /* Command prediction working mode */
.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 */
};
/* DDR3 32bit */
static const struct mx6_ddr_sysinfo dhcom_ddr_32bit = {
/* width of data bus:0=16,1=32,2=64 */
.dsize = 1,
.cs_density = 32,
.ncs = 1, /* single chip select */
.cs1_mirror = 1,
.rtt_wr = 1, /* DDR3_RTT_60_OHM, RTT_Wr = RZQ/4 */
@ -392,6 +482,81 @@ static void setup_iomux_usb(void)
SETUP_IOMUX_PADS(usb_pads);
}
/* DRAM */
static void dhcom_spl_dram_init(void)
{
enum dhcom_ddr3_code ddr3_code = dhcom_get_ddr3_code();
if (is_mx6dq()) {
mx6dq_dram_iocfg(64, &dhcom6dq_ddr_ioregs,
&dhcom6dq_grp_ioregs);
switch (ddr3_code) {
default:
printf("imx6qd: unsupported ddr3 code %d\n", ddr3_code);
printf(" choosing 1024 MB\n");
/* fall through */
case DH_DDR3_SIZE_1GIB:
mx6_dram_cfg(&dhcom_ddr_64bit,
&dhcom_mmdc_calib_4x2g_1066,
&dhcom_mem_ddr_2g);
break;
case DH_DDR3_SIZE_2GIB:
mx6_dram_cfg(&dhcom_ddr_64bit,
&dhcom_mmdc_calib_4x4g_1066,
&dhcom_mem_ddr_4g);
break;
}
/* Perform DDR DRAM calibration */
udelay(100);
mmdc_do_dqs_calibration(&dhcom_ddr_64bit);
} else if (is_cpu_type(MXC_CPU_MX6DL)) {
mx6sdl_dram_iocfg(64, &dhcom6sdl_ddr_ioregs,
&dhcom6sdl_grp_ioregs);
switch (ddr3_code) {
default:
printf("imx6dl: unsupported ddr3 code %d\n", ddr3_code);
printf(" choosing 1024 MB\n");
/* fall through */
case DH_DDR3_SIZE_1GIB:
mx6_dram_cfg(&dhcom_ddr_64bit,
&dhcom_mmdc_calib_4x2g_800,
&dhcom_mem_ddr_2g);
break;
}
/* Perform DDR DRAM calibration */
udelay(100);
mmdc_do_dqs_calibration(&dhcom_ddr_64bit);
} else if (is_cpu_type(MXC_CPU_MX6SOLO)) {
mx6sdl_dram_iocfg(32, &dhcom6sdl_ddr_ioregs,
&dhcom6sdl_grp_ioregs);
switch (ddr3_code) {
default:
printf("imx6s: unsupported ddr3 code %d\n", ddr3_code);
printf(" choosing 512 MB\n");
/* fall through */
case DH_DDR3_SIZE_512MIB:
mx6_dram_cfg(&dhcom_ddr_32bit,
&dhcom_mmdc_calib_2x2g_800,
&dhcom_mem_ddr_2g);
break;
case DH_DDR3_SIZE_1GIB:
mx6_dram_cfg(&dhcom_ddr_32bit,
&dhcom_mmdc_calib_2x4g_800,
&dhcom_mem_ddr_4g);
break;
}
/* Perform DDR DRAM calibration */
udelay(100);
mmdc_do_dqs_calibration(&dhcom_ddr_32bit);
}
}
void board_init_f(ulong dummy)
{
/* setup AIPS and disable watchdog */
@ -415,18 +580,8 @@ void board_init_f(ulong dummy)
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
/* Start the DDR DRAM */
if (is_mx6dq())
mx6dq_dram_iocfg(dhcom_mem_ddr.width, &dhcom6dq_ddr_ioregs,
&dhcom6dq_grp_ioregs);
else
mx6sdl_dram_iocfg(dhcom_mem_ddr.width, &dhcom6sdl_ddr_ioregs,
&dhcom6sdl_grp_ioregs);
mx6_dram_cfg(&dhcom_ddr_info, &dhcom_mmdc_calib, &dhcom_mem_ddr);
/* Perform DDR DRAM calibration */
udelay(100);
mmdc_do_dqs_calibration(&dhcom_ddr_info);
/* DDR3 initialization */
dhcom_spl_dram_init();
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);