diff options
Diffstat (limited to 'board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c')
| -rw-r--r-- | board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c new file mode 100644 index 0000000000..3fdfea7546 --- /dev/null +++ b/board/k+p/kp_imx6q_tpc/kp_imx6q_tpc_spl.c @@ -0,0 +1,338 @@ +/* + * 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); +} |