// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Nelson Integration, LLC
* Author: Eric Nelson <eric@nelint.com>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/iomux.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/mx6-ddr.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
static iomux_v3_cfg_t const uart_pads[] = {
#ifdef CONFIG_UART2_EIM_D26_27
IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
#elif defined(CONFIG_UART1_CSI0_DAT10_11)
IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
#elif defined(CONFIG_UART1_SD3_DAT6_7)
IOMUX_PADS(PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
#elif defined(CONFIG_UART1_UART1)
MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
#else
#error select UART console pads
#endif
};
#ifdef CONFIG_DDR3
#define GRP_DDRTYPE 0x000C0000
#else
#define GRP_DDRTYPE 0x00080000
#endif
/* all existing designs have this disabled */
#define DDR_PKE 0
/* use Kconfig for ODT and DRIVE_STRENGTH */
#define DDR_ODT \
(CONFIG_DDR_ODT << 8)
#define DRAM_DRIVE_STRENGTH \
(CONFIG_DRAM_DRIVE_STRENGTH << 3)
/* configure MX6Q/DUAL mmdc DDR io registers */
static struct mx6dq_iomux_ddr_regs const mx6dq_ddr_ioregs = {
/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
.dram_sdclk_0 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_sdclk_1 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_cas = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_ras = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_reset = DDR_ODT + DRAM_DRIVE_STRENGTH,
/* SDCKE[0:1]: 100k pull-up */
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
/* SDBA2: pull-up disabled */
.dram_sdba2 = 0x00000000,
/* SDODT[0:1]: 100k pull-up, 40 ohm */
.dram_sdodt0 = 0x00003000 + DRAM_DRIVE_STRENGTH,
.dram_sdodt1 = 0x00003000 + DRAM_DRIVE_STRENGTH,
/* SDQS[0:7]: Differential input, 40 ohm */
.dram_sdqs0 = DRAM_DRIVE_STRENGTH,
.dram_sdqs1 = DRAM_DRIVE_STRENGTH,
.dram_sdqs2 = DRAM_DRIVE_STRENGTH,
.dram_sdqs3 = DRAM_DRIVE_STRENGTH,
.dram_sdqs4 = DRAM_DRIVE_STRENGTH,
.dram_sdqs5 = DRAM_DRIVE_STRENGTH,
.dram_sdqs6 = DRAM_DRIVE_STRENGTH,
.dram_sdqs7 = DRAM_DRIVE_STRENGTH,
/* DQM[0:7]: Differential input, 40 ohm */
.dram_dqm0 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm1 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm2 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm3 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm4 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm5 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm6 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm7 = DDR_ODT + DRAM_DRIVE_STRENGTH,
};
/* configure MX6Q/DUAL mmdc GRP io registers */
static struct mx6dq_iomux_grp_regs const mx6dq_grp_ioregs = {
/* DDR3 */
.grp_ddr_type = GRP_DDRTYPE,
.grp_ddrmode_ctl = DDR_ODT,
/* disable DDR pullups */
.grp_ddrpke = DDR_PKE,
/* ADDR[00:16], SDBA[0:1]: 40 ohm */
.grp_addds = DRAM_DRIVE_STRENGTH,
/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
.grp_ctlds = DRAM_DRIVE_STRENGTH,
/* DATA[00:63]: Differential input, 40 ohm */
.grp_ddrmode = DDR_ODT,
.grp_b0ds = DRAM_DRIVE_STRENGTH,
.grp_b1ds = DRAM_DRIVE_STRENGTH,
.grp_b2ds = DRAM_DRIVE_STRENGTH,
.grp_b3ds = DRAM_DRIVE_STRENGTH,
.grp_b4ds = DRAM_DRIVE_STRENGTH,
.grp_b5ds = DRAM_DRIVE_STRENGTH,
.grp_b6ds = DRAM_DRIVE_STRENGTH,
.grp_b7ds = DRAM_DRIVE_STRENGTH,
};
static struct mx6sdl_iomux_ddr_regs const mx6sdl_ddr_ioregs = {
/* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
.dram_sdclk_0 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_sdclk_1 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_cas = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_ras = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_reset = DDR_ODT + DRAM_DRIVE_STRENGTH,
/* SDCKE[0:1]: 100k pull-up */
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
/* SDBA2: pull-up disabled */
.dram_sdba2 = 0x00000000,
/* SDODT[0:1]: 100k pull-up, 40 ohm */
.dram_sdodt0 = 0x00003000 + DRAM_DRIVE_STRENGTH,
.dram_sdodt1 = 0x00003000 + DRAM_DRIVE_STRENGTH,
/* SDQS[0:7]: Differential input, 40 ohm */
.dram_sdqs0 = DRAM_DRIVE_STRENGTH,
.dram_sdqs1 = DRAM_DRIVE_STRENGTH,
.dram_sdqs2 = DRAM_DRIVE_STRENGTH,
.dram_sdqs3 = DRAM_DRIVE_STRENGTH,
.dram_sdqs4 = DRAM_DRIVE_STRENGTH,
.dram_sdqs5 = DRAM_DRIVE_STRENGTH,
.dram_sdqs6 = DRAM_DRIVE_STRENGTH,
.dram_sdqs7 = DRAM_DRIVE_STRENGTH,
/* DQM[0:7]: Differential input, 40 ohm */
.dram_dqm0 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm1 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm2 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm3 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm4 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm5 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm6 = DDR_ODT + DRAM_DRIVE_STRENGTH,
.dram_dqm7 = DDR_ODT + DRAM_DRIVE_STRENGTH,
};
/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
static struct mx6sdl_iomux_grp_regs const mx6sdl_grp_ioregs = {
/* DDR3 */
.grp_ddr_type = GRP_DDRTYPE,
/* SDQS[0:7]: Differential input, 40 ohm */
.grp_ddrmode_ctl = DDR_ODT,
/* disable DDR pullups */
.grp_ddrpke = DDR_PKE,
/* ADDR[00:16], SDBA[0:1]: 40 ohm */
.grp_addds = DRAM_DRIVE_STRENGTH,
/* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
.grp_ctlds = DRAM_DRIVE_STRENGTH,
/* DATA[00:63]: Differential input, 40 ohm */
.grp_ddrmode = DDR_ODT,
.grp_b0ds = DRAM_DRIVE_STRENGTH,
.grp_b1ds = DRAM_DRIVE_STRENGTH,
.grp_b2ds = DRAM_DRIVE_STRENGTH,
.grp_b3ds = DRAM_DRIVE_STRENGTH,
.grp_b4ds = DRAM_DRIVE_STRENGTH,
.grp_b5ds = DRAM_DRIVE_STRENGTH,
.grp_b6ds = DRAM_DRIVE_STRENGTH,
.grp_b7ds = DRAM_DRIVE_STRENGTH,
};
const struct mx6sl_iomux_ddr_regs mx6sl_ddr_ioregs = {
.dram_sdqs0 = DRAM_DRIVE_STRENGTH,
.dram_sdqs1 = DRAM_DRIVE_STRENGTH,
.dram_sdqs2 = DRAM_DRIVE_STRENGTH,
.dram_sdqs3 = DRAM_DRIVE_STRENGTH,
.dram_dqm0 = DRAM_DRIVE_STRENGTH,
.dram_dqm1 = DRAM_DRIVE_STRENGTH,
.dram_dqm2 = DRAM_DRIVE_STRENGTH,
.dram_dqm3 = DRAM_DRIVE_STRENGTH,
.dram_cas = DRAM_DRIVE_STRENGTH,
.dram_ras = DRAM_DRIVE_STRENGTH,
.dram_sdclk_0 = DRAM_DRIVE_STRENGTH,
.dram_reset = DRAM_DRIVE_STRENGTH,
.dram_sdba2 = 0x00020000,
.dram_odt0 = 0x00030000 + DRAM_DRIVE_STRENGTH,
.dram_odt1 = 0x00030000 + DRAM_DRIVE_STRENGTH,
};
const struct mx6sl_iomux_grp_regs mx6sl_grp_ioregs = {
.grp_b0ds = DRAM_DRIVE_STRENGTH,
.grp_b1ds = DRAM_DRIVE_STRENGTH,
.grp_b2ds = DRAM_DRIVE_STRENGTH,
.grp_b3ds = DRAM_DRIVE_STRENGTH,
.grp_addds = DRAM_DRIVE_STRENGTH,
.grp_ctlds = DRAM_DRIVE_STRENGTH,
.grp_ddrmode_ctl = DDR_ODT,
.grp_ddrpke = DDR_PKE,
.grp_ddrmode = DDR_ODT,
.grp_ddr_type = GRP_DDRTYPE,
};
static struct mx6_ddr_sysinfo const sysinfo = {
/* width of data bus:0=16,1=32,2=64 */
#if CONFIG_DDRWIDTH == 32
.dsize = 1,
#elif CONFIG_DDRWIDTH == 64
.dsize = 2,
#else
#error missing CONFIG_DDRWIDTH
#endif
/* config for full 4GB range so that get_mem_size() works */
.cs_density = 32, /* 32Gb per CS */
/* # of chip selects */
.ncs = CONFIG_DDRCS,
.cs1_mirror = 0,
.bi_on = 1, /* Bank interleaving enabled */
.rtt_nom = CONFIG_RTT_NOM,
.rtt_wr = CONFIG_RTT_WR,
.ralat = CONFIG_RALAT, /* Read additional latency */
.walat = CONFIG_WALAT, /* Write additional latency */
.mif3_mode = 3, /* Command prediction working mode */
#ifdef CONFIG_DDR3
.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
.sde_to_rst = 0x10, /* JEDEC value for LPDDR2 - 200us */
.pd_fast_exit = 0, /* immaterial for calibration */
.ddr_type = DDR_TYPE_DDR3,
#else
.rst_to_cke = 0x10, /* JEDEC value for LPDDR2: 200us */
.sde_to_rst = 0, /* LPDDR2 does not need this field */
.pd_fast_exit = 0, /* immaterial for calibration */
.ddr_type = DDR_TYPE_LPDDR2,
#endif
.refsel = CONFIG_REFSEL,
.refr = CONFIG_REFR,
};
#ifdef CONFIG_MT41K512M16TNA
/* Micron MT41K512M16TNA-125 */
static struct mx6_ddr3_cfg const ddrtype = {
.mem_speed = 1600,
.density = 8,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 1,
.trcd = 1375,
.trcmin = 5062,
.trasmin = 3750,
};
#elif defined(CONFIG_MT41K128M16JT)
/* Micron MT41K128M16JT-125 */
static struct mx6_ddr3_cfg const ddrtype = {
.mem_speed = 1600,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
#elif defined(CONFIG_H5TQ4G63AFR)
/* Hynix H5TQ4G63AFR */
static struct mx6_ddr3_cfg const ddrtype = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
#elif defined CONFIG_H5TQ2G63DFR
/* Hynix H5TQ2G63DFR */
static struct mx6_ddr3_cfg const ddrtype = {
.mem_speed = 1333,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1350,
.trcmin = 4950,
.trasmin = 3600,
};
#elif defined(CONFIG_MT42L256M32D2LG)
/* Micron MT42L256M32D2LG */
static struct mx6_lpddr2_cfg ddrtype = {
.mem_speed = 800,
.density = 4,
.width = 32,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.trcd_lp = 2000,
.trppb_lp = 2000,
.trpab_lp = 2250,
.trasmin = 4200,
};
#elif defined(CONFIG_MT29PZZZ4D4BKESK)
/* Micron MT29PZZZ4D4BKESK */
static struct mx6_lpddr2_cfg ddrtype = {
.mem_speed = 800,
.density = 4,
.width = 32,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.trcd_lp = 2000,
.trppb_lp = 2000,
.trpab_lp = 2250,
.trasmin = 4200,
};
#else
#error please select DDR type using menuconfig
#endif
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
/* FIXME: these should probably be checked, especially
* for i.MX6SL, UL, ULL
*/
writel(0x00C03F3F, &ccm->CCGR0);
writel(0x0030FC03, &ccm->CCGR1);
writel(0x0FFFC000, &ccm->CCGR2);
writel(0x3FF00000, &ccm->CCGR3);
writel(0x00FFF300, &ccm->CCGR4);
writel(0x0F0000C3, &ccm->CCGR5);
writel(0x000003FF, &ccm->CCGR6);
}
static void display_calibration(struct mx6_mmdc_calibration *calib)
{
printf(".p0_mpdgctrl0\t= 0x%08X\n", calib->p0_mpdgctrl0);
printf(".p0_mpdgctrl1\t= 0x%08X\n", calib->p0_mpdgctrl1);
printf(".p0_mprddlctl\t= 0x%08X\n", calib->p0_mprddlctl);
printf(".p0_mpwrdlctl\t= 0x%08X\n", calib->p0_mpwrdlctl);
printf(".p0_mpwldectrl0\t= 0x%08X\n", calib->p0_mpwldectrl0);
printf(".p0_mpwldectrl1\t= 0x%08X\n", calib->p0_mpwldectrl1);
if (sysinfo.dsize == 2) {
printf(".p1_mpdgctrl0\t= 0x%08X\n", calib->p1_mpdgctrl0);
printf(".p1_mpdgctrl1\t= 0x%08X\n", calib->p1_mpdgctrl1);
printf(".p1_mprddlctl\t= 0x%08X\n", calib->p1_mprddlctl);
printf(".p1_mpwrdlctl\t= 0x%08X\n", calib->p1_mpwrdlctl);
printf(".p1_mpwldectrl0\t= 0x%08X\n", calib->p1_mpwldectrl0);
printf(".p1_mpwldectrl1\t= 0x%08X\n", calib->p1_mpwldectrl1);
}
#ifdef CONFIG_IMXIMAGE_OUTPUT
printf("DATA 4 MX6_MMDC_P0_MPDGCTRL0\t= 0x%08X\n", calib->p0_mpdgctrl0);
printf("DATA 4 MX6_MMDC_P0_MPDGCTRL1\t= 0x%08X\n", calib->p0_mpdgctrl1);
printf("DATA 4 MX6_MMDC_P0_MPRDDLCTL\t= 0x%08X\n", calib->p0_mprddlctl);
printf("DATA 4 MX6_MMDC_P0_MPWRDLCTL\t= 0x%08X\n", calib->p0_mpwrdlctl);
printf("DATA 4 MX6_MMDC_P0_MPWLDECTRL0\t= 0x%08X\n",
calib->p0_mpwldectrl0);
printf("DATA 4 MX6_MMDC_P0_MPWLDECTRL1\t= 0x%08X\n",
calib->p0_mpwldectrl1);
if (sysinfo.dsize == 2) {
printf("DATA 4 MX6_MMDC_P1_MPDGCTRL0\t= 0x%08X\n",
calib->p1_mpdgctrl0);
printf("DATA 4 MX6_MMDC_P1_MPDGCTRL1\t= 0x%08X\n",
calib->p1_mpdgctrl1);
printf("DATA 4 MX6_MMDC_P1_MPRDDLCTL\t= 0x%08X\n",
calib->p1_mprddlctl);
printf("DATA 4 MX6_MMDC_P1_MPWRDLCTL\t= 0x%08X\n",
calib->p1_mpwrdlctl);
printf("DATA 4 MX6_MMDC_P1_MPWLDECTRL0\t= 0x%08X\n",
calib->p1_mpwldectrl0);
printf("DATA 4 MX6_MMDC_P1_MPWLDECTRL1\t= 0x%08X\n",
calib->p1_mpwldectrl1);
}
#endif
}
/*
* called from C runtime startup code (arch/arm/lib/crt0.S:_main)
* - we have a stack and a place to store GD, both in SRAM
* - no variable global data is available
*/
void board_init_f(ulong dummy)
{
int errs;
struct mx6_mmdc_calibration calibration = {0};
memset((void *)gd, 0, sizeof(struct global_data));
/* write leveling calibration defaults */
calibration.p0_mpwrdlctl = 0x40404040;
calibration.p1_mpwrdlctl = 0x40404040;
/* setup AIPS and disable watchdog */
arch_cpu_init();
ccgr_init();
SETUP_IOMUX_PADS(uart_pads);
/* setup GP timer */
timer_init();
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
if (sysinfo.dsize != 1) {
if (is_cpu_type(MXC_CPU_MX6SX) ||
is_cpu_type(MXC_CPU_MX6UL) ||
is_cpu_type(MXC_CPU_MX6ULL) ||
is_cpu_type(MXC_CPU_MX6SL)) {
printf("cpu type 0x%x doesn't support 64-bit bus\n",
get_cpu_type());
reset_cpu(0);
}
}
#ifdef CONFIG_MX6SL
mx6sl_dram_iocfg(CONFIG_DDRWIDTH, &mx6sl_ddr_ioregs,
&mx6sl_grp_ioregs);
#else
if (is_cpu_type(MXC_CPU_MX6Q)) {
mx6dq_dram_iocfg(CONFIG_DDRWIDTH, &mx6dq_ddr_ioregs,
&mx6dq_grp_ioregs);
} else {
mx6sdl_dram_iocfg(CONFIG_DDRWIDTH, &mx6sdl_ddr_ioregs,
&mx6sdl_grp_ioregs);
}
#endif
mx6_dram_cfg(&sysinfo, &calibration, &ddrtype);
errs = mmdc_do_write_level_calibration(&sysinfo);
if (errs) {
printf("error %d from write level calibration\n", errs);
} else {
errs = mmdc_do_dqs_calibration(&sysinfo);
if (errs) {
printf("error %d from dqs calibration\n", errs);
} else {
printf("completed successfully\n");
mmdc_read_calibration(&sysinfo, &calibration);
display_calibration(&calibration);
}
}
}