diff options
Diffstat (limited to 'board/toradex/verdin-imx8mm/spl.c')
| -rw-r--r-- | board/toradex/verdin-imx8mm/spl.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/board/toradex/verdin-imx8mm/spl.c b/board/toradex/verdin-imx8mm/spl.c new file mode 100644 index 0000000000..5f1bfbbc17 --- /dev/null +++ b/board/toradex/verdin-imx8mm/spl.c @@ -0,0 +1,231 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2019 Toradex + */ + +#include <common.h> +#include <spl.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx8m_ddr.h> +#include <asm/arch/imx8mm_pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/gpio.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <errno.h> +#include <fsl_esdhc.h> +#include <mmc.h> +#include <power/pmic.h> +#include <power/bd71837.h> + +DECLARE_GLOBAL_DATA_PTR; + +void spl_dram_init(void) +{ + ddr_init(&dram_timing); +} + +#define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE) +#define PC MUX_PAD_CTRL(I2C_PAD_CTRL) +struct i2c_pads_info i2c_pad_info1 = { + .scl = { + .i2c_mode = IMX8MM_PAD_I2C1_SCL_I2C1_SCL | PC, + .gpio_mode = IMX8MM_PAD_I2C1_SCL_GPIO5_IO14 | PC, + .gp = IMX_GPIO_NR(5, 14), + }, + .sda = { + .i2c_mode = IMX8MM_PAD_I2C1_SDA_I2C1_SDA | PC, + .gpio_mode = IMX8MM_PAD_I2C1_SDA_GPIO5_IO15 | PC, + .gp = IMX_GPIO_NR(5, 15), + }, +}; + +#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 12) +#define USDHC2_PWR_GPIO IMX_GPIO_NR(3, 5) + +#define USDHC_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE | \ + PAD_CTL_FSEL2) +#define USDHC_GPIO_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_DSE1) + +static iomux_v3_cfg_t const usdhc1_pads[] = { + IMX8MM_PAD_SD1_CLK_USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_CMD_USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA0_USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA1_USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA2_USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA3_USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA4_USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA5_USDHC1_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA6_USDHC1_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_DATA7_USDHC1_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD1_STROBE_USDHC1_STROBE | MUX_PAD_CTRL(USDHC_PAD_CTRL), +}; + +static iomux_v3_cfg_t const usdhc2_pads[] = { + IMX8MM_PAD_SD2_CLK_USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_CMD_USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_DATA0_USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_DATA1_USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_DATA2_USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_DATA3_USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + IMX8MM_PAD_SD2_RESET_B_GPIO2_IO19 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), + IMX8MM_PAD_SD2_CD_B_GPIO2_IO12 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), + IMX8MM_PAD_NAND_CLE_GPIO3_IO5 | MUX_PAD_CTRL(USDHC_GPIO_PAD_CTRL), +}; + +static struct fsl_esdhc_cfg usdhc_cfg[2] = { + /* esdhc_base, sdhc_clk, max_bus_width */ + {USDHC1_BASE_ADDR, 0, 8}, + {USDHC2_BASE_ADDR, 0, 4}, +}; + +int board_mmc_init(bd_t *bis) +{ + int i, ret; + /* + * According to the board_mmc_init() the following map is done: + * (U-Boot device node) (Physical Port) + * mmc0 USDHC1 (eMMC) + * mmc1 USDHC2 (SD card) + */ + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + switch (i) { + case 0: + usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); + imx_iomux_v3_setup_multiple_pads( + usdhc1_pads, ARRAY_SIZE(usdhc1_pads)); + break; + case 1: + usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK); + imx_iomux_v3_setup_multiple_pads( + usdhc2_pads, ARRAY_SIZE(usdhc2_pads)); + gpio_request(USDHC2_PWR_GPIO, "SD_1_PWR_EN"); + gpio_direction_output(USDHC2_PWR_GPIO, 1); + break; + default: + printf("Warning: you configured more USDHC controllers" + "(%d) than supported by the board\n", i + 1); + return -EINVAL; + } + + ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + if (ret) + return ret; + } + + return 0; +} + +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 USDHC1_BASE_ADDR: + ret = 1; /* eMMC */ + break; + case USDHC2_BASE_ADDR: + gpio_request(USDHC2_CD_GPIO, "SD_1_CD#"); + gpio_direction_input(USDHC2_CD_GPIO); + ret = !gpio_get_value(USDHC2_CD_GPIO); + return ret; + } + + return 1; +} + +#ifdef CONFIG_POWER +#define I2C_PMIC 0 +int power_init_board(void) +{ + struct pmic *p; + int ret; + + ret = power_bd71837_init(I2C_PMIC); + if (ret) + printf("power init failed"); + + p = pmic_get("BD71837"); + pmic_probe(p); + + /* decrease RESET key long push time from the default 10s to 10ms */ + pmic_reg_write(p, BD71837_PWRONCONFIG1, 0x0); + + /* unlock the PMIC regs */ + pmic_reg_write(p, BD71837_REGLOCK, 0x1); + + /* increase VDD_DRAM to 0.9v for 3Ghz DDR */ + pmic_reg_write(p, BD71837_BUCK5_VOLT, 0x2); + +#ifndef CONFIG_IMX8M_LPDDR4 + /* increase NVCC_DRAM_1V2 to 1.2v for DDR4 */ + pmic_reg_write(p, BD71837_BUCK8_VOLT, 0x28); +#endif + + /* lock the PMIC regs */ + pmic_reg_write(p, BD71837_REGLOCK, 0x11); + + return 0; +} +#endif + +void spl_board_init(void) +{ +#ifndef CONFIG_SPL_USB_SDP_SUPPORT + /* Serial download mode */ + if (is_usb_boot()) { + puts("Back to ROM, SDP\n"); + restore_boot_params(); + } +#endif + puts("Normal Boot\n"); +} + +#ifdef CONFIG_SPL_LOAD_FIT +int board_fit_config_name_match(const char *name) +{ + /* Just empty function now - can't decide what to choose */ + debug("%s: %s\n", __func__, name); + + return 0; +} +#endif + +void board_init_f(ulong dummy) +{ + int ret; + + /* Clear global data */ + memset((void *)gd, 0, sizeof(gd_t)); + + arch_cpu_init(); + + board_early_init_f(); + + timer_init(); + + preloader_console_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + ret = spl_init(); + if (ret) { + debug("spl_init() failed: %d\n", ret); + hang(); + } + + enable_tzc380(); + + /* Adjust pmic voltage to 1.0V for 800M */ + setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + + power_init_board(); + + /* DDR initialization */ + spl_dram_init(); + + board_init_r(NULL, 0); +} |