diff options
Diffstat (limited to 'board/compulab/imx8mm-cl-iot-gate/spl.c')
| -rw-r--r-- | board/compulab/imx8mm-cl-iot-gate/spl.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/board/compulab/imx8mm-cl-iot-gate/spl.c b/board/compulab/imx8mm-cl-iot-gate/spl.c new file mode 100644 index 0000000000..8f592457d4 --- /dev/null +++ b/board/compulab/imx8mm-cl-iot-gate/spl.c @@ -0,0 +1,187 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2019 NXP + * Copyright 2020 Linaro + */ + +#include <common.h> +#include <command.h> +#include <cpu_func.h> +#include <hang.h> +#include <image.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <asm/io.h> +#include <asm/mach-imx/iomux-v3.h> +#include <asm/arch/clock.h> +#include <asm/arch/imx8mm_pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/mach-imx/mxc_i2c.h> +#include <asm/mach-imx/gpio.h> +#include <asm/arch/ddr.h> + +#include <dm/uclass.h> +#include <dm/device.h> +#include <dm/uclass-internal.h> +#include <dm/device-internal.h> + +#include <power/pmic.h> +#include <power/bd71837.h> + +#include "ddr/ddr.h" + +DECLARE_GLOBAL_DATA_PTR; + +int spl_board_boot_device(enum boot_device boot_dev_spl) +{ + switch (boot_dev_spl) { + case SD2_BOOT: + case MMC2_BOOT: + return BOOT_DEVICE_MMC1; + case SD3_BOOT: + case MMC3_BOOT: + return BOOT_DEVICE_MMC2; + default: + return BOOT_DEVICE_NONE; + } +} + +#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_I2C2_SCL_I2C2_SCL | PC, + .gpio_mode = IMX8MM_PAD_I2C2_SCL_GPIO5_IO16 | PC, + .gp = IMX_GPIO_NR(5, 16), + }, + .sda = { + .i2c_mode = IMX8MM_PAD_I2C2_SDA_I2C2_SDA | PC, + .gpio_mode = IMX8MM_PAD_I2C2_SDA_GPIO5_IO17 | PC, + .gp = IMX_GPIO_NR(5, 17), + }, +}; + +static void spl_dram_init(void) +{ + spl_dram_init_compulab(); +} + +void spl_board_init(void) +{ + 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 + +#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1) +#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE) + +static iomux_v3_cfg_t const uart_pads[] = { + IMX8MM_PAD_UART3_RXD_UART3_RX | MUX_PAD_CTRL(UART_PAD_CTRL), + IMX8MM_PAD_UART3_TXD_UART3_TX | MUX_PAD_CTRL(UART_PAD_CTRL), +}; + +static iomux_v3_cfg_t const wdog_pads[] = { + IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL), +}; + +int board_early_init_f(void) +{ + struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR; + + imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads)); + + set_wdog_reset(wdog); + + imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads)); + + return 0; +} + +static int power_init_board(void) +{ + struct udevice *dev; + int ret; + + ret = pmic_get("pmic@4b", &dev); + if (ret == -ENODEV) { + puts("No pmic\n"); + return 0; + } + if (ret != 0) + return ret; + + /* decrease RESET key long push time from the default 10s to 10ms */ + pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0); + + /* unlock the PMIC regs */ + pmic_reg_write(dev, BD718XX_REGLOCK, 0x1); + + /* increase VDD_SOC to typical value 0.85v before first DRAM access */ + pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f); + + /* increase VDD_DRAM to 0.975v for 3Ghz DDR */ + pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83); + + /* increase NVCC_DRAM_1V2 to 1.2v for DDR4 */ + pmic_reg_write(dev, BD718XX_4TH_NODVS_BUCK_VOLT, 0x28); + + /* lock the PMIC regs */ + pmic_reg_write(dev, BD718XX_REGLOCK, 0x11); + + return 0; +} + +void board_init_f(ulong dummy) +{ + struct udevice *dev; + int ret; + + arch_cpu_init(); + + board_early_init_f(); + + init_uart_clk(2); + + timer_init(); + + preloader_console_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + ret = spl_early_init(); + if (ret) { + debug("spl_early_init() failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device_by_name(UCLASS_CLK, + "clock-controller@30380000", + &dev); + if (ret < 0) { + printf("Failed to find clock node. Check device tree\n"); + hang(); + } + + enable_tzc380(); + + setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1); + + power_init_board(); + + /* DDR initialization */ + spl_dram_init(); + + board_init_r(NULL, 0); +} |