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/*
* K+P iMX6Q KP_IMX6Q_TPC board configuration
*
* Copyright (C) 2018 Lukasz Majewski <lukma@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-ddr.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/io.h>
#include <errno.h>
#include <fuse.h>
#include <fsl_esdhc.h>
#include <i2c.h>
#include <mmc.h>
#include <spl.h>
#define UART_PAD_CTRL \
(PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL \
(PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
DECLARE_GLOBAL_DATA_PTR;
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
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);
}
/* onboard microSD */
static iomux_v3_cfg_t const usdhc2_pads[] = {
IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_NANDF_CS3__GPIO6_IO16 | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
/* eMMC */
static iomux_v3_cfg_t const usdhc4_pads[] = {
IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};
/* SD */
static void setup_iomux_sd(void)
{
SETUP_IOMUX_PADS(usdhc2_pads);
SETUP_IOMUX_PADS(usdhc4_pads);
}
/* UART */
static iomux_v3_cfg_t const uart1_pads[] = {
IOMUX_PADS(PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static void setup_iomux_uart(void)
{
SETUP_IOMUX_PADS(uart1_pads);
}
/* USB */
static iomux_v3_cfg_t const usb_pads[] = {
IOMUX_PADS(PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)),
};
static void setup_iomux_usb(void)
{
SETUP_IOMUX_PADS(usb_pads);
}
/* DDR3 */
static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = {
.dram_sdclk_0 = 0x00000030,
.dram_sdclk_1 = 0x00000030,
.dram_cas = 0x00000030,
.dram_ras = 0x00000030,
.dram_reset = 0x00000030,
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
.dram_sdba2 = 0x00000000,
.dram_sdodt0 = 0x00000030,
.dram_sdodt1 = 0x00000030,
.dram_sdqs0 = 0x00000018,
.dram_sdqs1 = 0x00000018,
.dram_sdqs2 = 0x00000018,
.dram_sdqs3 = 0x00000018,
.dram_sdqs4 = 0x00000018,
.dram_sdqs5 = 0x00000018,
.dram_sdqs6 = 0x00000018,
.dram_sdqs7 = 0x00000018,
.dram_dqm0 = 0x00000018,
.dram_dqm1 = 0x00000018,
.dram_dqm2 = 0x00000018,
.dram_dqm3 = 0x00000018,
.dram_dqm4 = 0x00000018,
.dram_dqm5 = 0x00000018,
.dram_dqm6 = 0x00000018,
.dram_dqm7 = 0x00000018,
};
static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = {
.grp_ddr_type = 0x000c0000,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_addds = 0x00000030,
.grp_ctlds = 0x00000030,
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000018,
.grp_b1ds = 0x00000018,
.grp_b2ds = 0x00000018,
.grp_b3ds = 0x00000018,
.grp_b4ds = 0x00000018,
.grp_b5ds = 0x00000018,
.grp_b6ds = 0x00000018,
.grp_b7ds = 0x00000018,
};
static const struct mx6_mmdc_calibration mx6_4x256mx16_mmdc_calib = {
.p0_mpwldectrl0 = 0x001F001F,
.p0_mpwldectrl1 = 0x001F001F,
.p1_mpwldectrl0 = 0x001F001F,
.p1_mpwldectrl1 = 0x001F001F,
.p0_mpdgctrl0 = 0x43270338,
.p0_mpdgctrl1 = 0x03200314,
.p1_mpdgctrl0 = 0x431A032F,
.p1_mpdgctrl1 = 0x03200263,
.p0_mprddlctl = 0x4B434748,
.p1_mprddlctl = 0x4445404C,
.p0_mpwrdlctl = 0x38444542,
.p1_mpwrdlctl = 0x4935493A,
};
/* MT41K256M16 (4Gb density) */
static const struct mx6_ddr3_cfg mt41k256m16 = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 15,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
#ifdef CONFIG_MX6_DDRCAL
static void spl_dram_print_cal(struct mx6_ddr_sysinfo const *sysinfo)
{
struct mx6_mmdc_calibration calibration = {0};
mmdc_read_calibration(sysinfo, &calibration);
debug(".p0_mpdgctrl0\t= 0x%08X\n", calibration.p0_mpdgctrl0);
debug(".p0_mpdgctrl1\t= 0x%08X\n", calibration.p0_mpdgctrl1);
debug(".p0_mprddlctl\t= 0x%08X\n", calibration.p0_mprddlctl);
debug(".p0_mpwrdlctl\t= 0x%08X\n", calibration.p0_mpwrdlctl);
debug(".p0_mpwldectrl0\t= 0x%08X\n", calibration.p0_mpwldectrl0);
debug(".p0_mpwldectrl1\t= 0x%08X\n", calibration.p0_mpwldectrl1);
debug(".p1_mpdgctrl0\t= 0x%08X\n", calibration.p1_mpdgctrl0);
debug(".p1_mpdgctrl1\t= 0x%08X\n", calibration.p1_mpdgctrl1);
debug(".p1_mprddlctl\t= 0x%08X\n", calibration.p1_mprddlctl);
debug(".p1_mpwrdlctl\t= 0x%08X\n", calibration.p1_mpwrdlctl);
debug(".p1_mpwldectrl0\t= 0x%08X\n", calibration.p1_mpwldectrl0);
debug(".p1_mpwldectrl1\t= 0x%08X\n", calibration.p1_mpwldectrl1);
}
static void spl_dram_perform_cal(struct mx6_ddr_sysinfo const *sysinfo)
{
int ret;
/* Perform DDR DRAM calibration */
udelay(100);
ret = mmdc_do_write_level_calibration(sysinfo);
if (ret) {
printf("DDR: Write level calibration error [%d]\n", ret);
return;
}
ret = mmdc_do_dqs_calibration(sysinfo);
if (ret) {
printf("DDR: DQS calibration error [%d]\n", ret);
return;
}
spl_dram_print_cal(sysinfo);
}
#endif /* CONFIG_MX6_DDRCAL */
static void spl_dram_init(void)
{
struct mx6_ddr_sysinfo sysinfo = {
/* 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 */
/* single chip select */
.ncs = 1,
.cs1_mirror = 0,
.rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
.rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
.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) */
.pd_fast_exit = 1, /* enable precharge power-down fast exit */
.ddr_type = DDR_TYPE_DDR3,
.refsel = 1, /* Refresh cycles at 32KHz */
.refr = 7, /* 8 refresh commands per refresh cycle */
};
mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs);
mx6_dram_cfg(&sysinfo, &mx6_4x256mx16_mmdc_calib, &mt41k256m16);
#ifdef CONFIG_MX6_DDRCAL
spl_dram_perform_cal(&sysinfo);
#endif
}
struct fsl_esdhc_cfg usdhc_cfg[] = {
{USDHC2_BASE_ADDR},
{USDHC4_BASE_ADDR},
};
#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
int ret = 0;
switch (cfg->esdhc_base) {
case USDHC2_BASE_ADDR:
ret = !gpio_get_value(USDHC2_CD_GPIO);
break;
case USDHC4_BASE_ADDR:
ret = 1; /* eMMC/uSDHC4 is always present */
break;
}
return ret;
}
int board_mmc_init(bd_t *bd)
{
struct src *psrc = (struct src *)SRC_BASE_ADDR;
unsigned int reg = readl(&psrc->sbmr1) >> 11;
/*
* Upon reading BOOT_CFG register the following map is done:
* Bit 11 and 12 of BOOT_CFG register can determine the current
* mmc port
* 0x1 SD1
* 0x3 SD4
*/
switch (reg & 0x3) {
case 0x1:
SETUP_IOMUX_PADS(usdhc2_pads);
usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
break;
case 0x3:
SETUP_IOMUX_PADS(usdhc4_pads);
usdhc_cfg[0].esdhc_base = USDHC4_BASE_ADDR;
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
break;
}
return fsl_esdhc_initialize(bd, &usdhc_cfg[0]);
}
void board_init_f(ulong dummy)
{
/* setup AIPS and disable watchdog */
arch_cpu_init();
ccgr_init();
gpr_init();
/* setup GP timer */
timer_init();
setup_iomux_sd();
setup_iomux_uart();
setup_iomux_usb();
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
/* DDR initialization */
spl_dram_init();
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
/* load/boot image from boot device */
board_init_r(NULL, 0);
}
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