diff options
Diffstat (limited to 'board/dhelectronics/dh_imx6/dh_imx6_spl.c')
| -rw-r--r-- | board/dhelectronics/dh_imx6/dh_imx6_spl.c | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/board/dhelectronics/dh_imx6/dh_imx6_spl.c b/board/dhelectronics/dh_imx6/dh_imx6_spl.c new file mode 100644 index 0000000000..e22ff5c8c6 --- /dev/null +++ b/board/dhelectronics/dh_imx6/dh_imx6_spl.c @@ -0,0 +1,399 @@ +/* + * DHCOM DH-iMX6 PDK SPL support + * + * Copyright (C) 2017 Marek Vasut <marex@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 ENET_PAD_CTRL \ + (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_HYS) + +#define GPIO_PAD_CTRL \ + (PAD_CTL_HYS | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm) + +#define SPI_PAD_CTRL \ + (PAD_CTL_HYS | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ + PAD_CTL_SRE_FAST) + +#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 const struct mx6dq_iomux_ddr_regs dhcom6dq_ddr_ioregs = { + .dram_sdclk_0 = 0x00020030, + .dram_sdclk_1 = 0x00020030, + .dram_cas = 0x00020030, + .dram_ras = 0x00020030, + .dram_reset = 0x00020030, + .dram_sdcke0 = 0x00003000, + .dram_sdcke1 = 0x00003000, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = 0x00003030, + .dram_sdodt1 = 0x00003030, + .dram_sdqs0 = 0x00000030, + .dram_sdqs1 = 0x00000030, + .dram_sdqs2 = 0x00000030, + .dram_sdqs3 = 0x00000030, + .dram_sdqs4 = 0x00000030, + .dram_sdqs5 = 0x00000030, + .dram_sdqs6 = 0x00000030, + .dram_sdqs7 = 0x00000030, + .dram_dqm0 = 0x00020030, + .dram_dqm1 = 0x00020030, + .dram_dqm2 = 0x00020030, + .dram_dqm3 = 0x00020030, + .dram_dqm4 = 0x00020030, + .dram_dqm5 = 0x00020030, + .dram_dqm6 = 0x00020030, + .dram_dqm7 = 0x00020030, +}; + +static const struct mx6dq_iomux_grp_regs dhcom6dq_grp_ioregs = { + .grp_ddr_type = 0x000C0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = 0x00000030, + .grp_ctlds = 0x00000030, + .grp_ddrmode = 0x00020000, + .grp_b0ds = 0x00000030, + .grp_b1ds = 0x00000030, + .grp_b2ds = 0x00000030, + .grp_b3ds = 0x00000030, + .grp_b4ds = 0x00000030, + .grp_b5ds = 0x00000030, + .grp_b6ds = 0x00000030, + .grp_b7ds = 0x00000030, +}; + +static const struct mx6sdl_iomux_ddr_regs dhcom6sdl_ddr_ioregs = { + .dram_sdclk_0 = 0x00020030, + .dram_sdclk_1 = 0x00020030, + .dram_cas = 0x00020030, + .dram_ras = 0x00020030, + .dram_reset = 0x00020030, + .dram_sdcke0 = 0x00003000, + .dram_sdcke1 = 0x00003000, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = 0x00003030, + .dram_sdodt1 = 0x00003030, + .dram_sdqs0 = 0x00000030, + .dram_sdqs1 = 0x00000030, + .dram_sdqs2 = 0x00000030, + .dram_sdqs3 = 0x00000030, + .dram_sdqs4 = 0x00000030, + .dram_sdqs5 = 0x00000030, + .dram_sdqs6 = 0x00000030, + .dram_sdqs7 = 0x00000030, + .dram_dqm0 = 0x00020030, + .dram_dqm1 = 0x00020030, + .dram_dqm2 = 0x00020030, + .dram_dqm3 = 0x00020030, + .dram_dqm4 = 0x00020030, + .dram_dqm5 = 0x00020030, + .dram_dqm6 = 0x00020030, + .dram_dqm7 = 0x00020030, +}; + +static const struct mx6sdl_iomux_grp_regs dhcom6sdl_grp_ioregs = { + .grp_ddr_type = 0x000C0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = 0x00000030, + .grp_ctlds = 0x00000030, + .grp_ddrmode = 0x00020000, + .grp_b0ds = 0x00000030, + .grp_b1ds = 0x00000030, + .grp_b2ds = 0x00000030, + .grp_b3ds = 0x00000030, + .grp_b4ds = 0x00000030, + .grp_b5ds = 0x00000030, + .grp_b6ds = 0x00000030, + .grp_b7ds = 0x00000030, +}; + +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, +}; + +static const struct mx6_ddr3_cfg dhcom_mem_ddr = { + .mem_speed = 1600, + .density = 4, + .width = 64, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .pagesz = 2, + .trcd = 1375, + .trcmin = 4875, + .trasmin = 3500, +}; + +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 */ + .ncs = 1, /* single chip select */ + .cs1_mirror = 0, + .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) */ +}; + +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); +} + +/* Board ID */ +static iomux_v3_cfg_t const hwcode_pads[] = { + IOMUX_PADS(PAD_EIM_A19__GPIO2_IO19 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_A23__GPIO6_IO06 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_A22__GPIO2_IO16 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), +}; + +static void setup_iomux_boardid(void) +{ + /* HW code pins: Setup alternate function and configure pads */ + SETUP_IOMUX_PADS(hwcode_pads); +} + +/* GPIO */ +static iomux_v3_cfg_t const gpio_pads[] = { + IOMUX_PADS(PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_GPIO_5__GPIO1_IO05 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_CSI0_DAT17__GPIO6_IO03 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_GPIO_19__GPIO4_IO05 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_DI0_PIN4__GPIO4_IO20 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D27__GPIO3_IO27 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_KEY_ROW0__GPIO4_IO07 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_KEY_COL1__GPIO4_IO08 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT4__GPIO7_IO01 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_CSI0_VSYNC__GPIO5_IO21 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_GPIO_18__GPIO7_IO13 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD1_DAT0__GPIO1_IO16 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD1_DAT1__GPIO1_IO17 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD1_DAT2__GPIO1_IO19 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_SD1_CLK__GPIO1_IO20 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_CSI0_PIXCLK__GPIO5_IO18 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), + IOMUX_PADS(PAD_CSI0_MCLK__GPIO5_IO19 | MUX_PAD_CTRL(GPIO_PAD_CTRL)), +}; + +static void setup_iomux_gpio(void) +{ + SETUP_IOMUX_PADS(gpio_pads); +} + +/* Ethernet */ +static iomux_v3_cfg_t const enet_pads[] = { + IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_RX_ER__ENET_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL)), + /* SMSC PHY Reset */ + IOMUX_PADS(PAD_EIM_WAIT__GPIO5_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)), + /* ENET_VIO_GPIO */ + IOMUX_PADS(PAD_GPIO_7__GPIO1_IO07 | MUX_PAD_CTRL(NO_PAD_CTRL)), + /* ENET_Interrupt - (not used) */ + IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL)), +}; + +static void setup_iomux_enet(void) +{ + SETUP_IOMUX_PADS(enet_pads); +} + +/* SD interface */ +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)), /* CD */ +}; + +/* onboard microSD */ +static iomux_v3_cfg_t const usdhc3_pads[] = { + IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_RST__GPIO7_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* CD */ +}; + +/* 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(usdhc3_pads); + SETUP_IOMUX_PADS(usdhc4_pads); +} + +/* SPI */ +static iomux_v3_cfg_t const ecspi1_pads[] = { + /* SS0 */ + IOMUX_PADS(PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(SPI_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL)), + IOMUX_PADS(PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL)), +}; + +static void setup_iomux_spi(void) +{ + SETUP_IOMUX_PADS(ecspi1_pads); +} + +int board_spi_cs_gpio(unsigned bus, unsigned cs) +{ + if (bus == 0 && cs == 0) + return IMX_GPIO_NR(2, 30); + else + return -1; +} + +/* 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); +} + +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_boardid(); + setup_iomux_gpio(); + setup_iomux_enet(); + setup_iomux_sd(); + setup_iomux_spi(); + setup_iomux_uart(); + setup_iomux_usb(); + + /* 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_write_level_calibration(&dhcom_ddr_info); + mmdc_do_dqs_calibration(&dhcom_ddr_info); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + /* load/boot image from boot device */ + board_init_r(NULL, 0); +} |