1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2020 Toradex
11 #include <asm/arch/clock.h>
12 #include <asm/arch/ddr.h>
13 #include <asm/arch/imx8mm_pins.h>
14 #include <asm/arch/sys_proto.h>
16 #include <asm/mach-imx/boot_mode.h>
17 #include <asm/mach-imx/iomux-v3.h>
19 #include <dm/device.h>
20 #include <dm/device-internal.h>
21 #include <dm/uclass.h>
22 #include <dm/uclass-internal.h>
24 #include <power/bd71837.h>
25 #include <power/pmic.h>
28 DECLARE_GLOBAL_DATA_PTR;
30 int spl_board_boot_device(enum boot_device boot_dev_spl)
32 switch (boot_dev_spl) {
34 return BOOT_DEVICE_MMC1;
37 return BOOT_DEVICE_MMC2;
40 return BOOT_DEVICE_MMC1;
42 return BOOT_DEVICE_BOARD;
44 return BOOT_DEVICE_NONE;
48 void spl_dram_init(void)
50 ddr_init(&dram_timing);
53 void spl_board_init(void)
55 /* Serial download mode */
57 puts("Back to ROM, SDP\n");
58 restore_boot_params();
60 puts("Normal Boot\n");
63 #ifdef CONFIG_SPL_LOAD_FIT
64 int board_fit_config_name_match(const char *name)
66 /* Just empty function now - can't decide what to choose */
67 debug("%s: %s\n", __func__, name);
73 #define UART_PAD_CTRL (PAD_CTL_PUE | PAD_CTL_PE | PAD_CTL_DSE4)
74 #define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
76 /* Verdin UART_3, Console/Debug UART */
77 static iomux_v3_cfg_t const uart_pads[] = {
78 IMX8MM_PAD_SAI2_RXFS_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
79 IMX8MM_PAD_SAI2_RXC_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
82 static iomux_v3_cfg_t const wdog_pads[] = {
83 IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
86 int board_early_init_f(void)
88 struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
90 imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
94 imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
99 int power_init_board(void)
104 ret = pmic_get("pmic@4b", &dev);
105 if (ret == -ENODEV) {
112 /* decrease RESET key long push time from the default 10s to 10ms */
113 pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
115 /* unlock the PMIC regs */
116 pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
118 /* increase VDD_SOC to typical value 0.85v before first DRAM access */
119 pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
121 /* increase VDD_DRAM to 0.975v for 3Ghz DDR */
122 pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
124 #ifndef CONFIG_IMX8M_LPDDR4
125 /* increase NVCC_DRAM_1V2 to 1.2v for DDR4 */
126 pmic_reg_write(dev, BD718XX_4TH_NODVS_BUCK_VOLT, 0x28);
129 /* lock the PMIC regs */
130 pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
135 void board_init_f(ulong dummy)
144 board_early_init_f();
148 preloader_console_init();
151 memset(__bss_start, 0, __bss_end - __bss_start);
153 ret = spl_early_init();
155 debug("spl_early_init() failed: %d\n", ret);
159 ret = uclass_get_device_by_name(UCLASS_CLK,
160 "clock-controller@30380000",
163 printf("Failed to find clock node. Check device tree\n");
171 /* DDR initialization */
174 board_init_r(NULL, 0);