1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2020 PHYTEC Messtechnik GmbH
4 * Author: Teresa Remmet <t.remmet@phytec.de>
5 */
6
7 #include <common.h>
8 #include <asm/arch/clock.h>
9 #include <asm/arch/ddr.h>
10 #include <asm/arch/imx8mp_pins.h>
11 #include <asm/arch/sys_proto.h>
12 #include <asm/global_data.h>
13 #include <asm/mach-imx/boot_mode.h>
14 #include <asm/mach-imx/gpio.h>
15 #include <asm/mach-imx/mxc_i2c.h>
16 #include <asm/mach-imx/iomux-v3.h>
17 #include <hang.h>
18 #include <init.h>
19 #include <log.h>
20 #include <power/pmic.h>
21 #include <power/pca9450.h>
22 #include <spl.h>
23
24 DECLARE_GLOBAL_DATA_PTR;
25
spl_board_boot_device(enum boot_device boot_dev_spl)26 int spl_board_boot_device(enum boot_device boot_dev_spl)
27 {
28 return BOOT_DEVICE_BOOTROM;
29 }
30
spl_dram_init(void)31 void spl_dram_init(void)
32 {
33 ddr_init(&dram_timing);
34 }
35
36 #define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE)
37 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
38 struct i2c_pads_info i2c_pad_info1 = {
39 .scl = {
40 .i2c_mode = MX8MP_PAD_I2C1_SCL__I2C1_SCL | PC,
41 .gpio_mode = MX8MP_PAD_I2C1_SCL__GPIO5_IO14 | PC,
42 .gp = IMX_GPIO_NR(5, 14),
43 },
44 .sda = {
45 .i2c_mode = MX8MP_PAD_I2C1_SDA__I2C1_SDA | PC,
46 .gpio_mode = MX8MP_PAD_I2C1_SDA__GPIO5_IO15 | PC,
47 .gp = IMX_GPIO_NR(5, 15),
48 },
49 };
50
power_init_board(void)51 int power_init_board(void)
52 {
53 struct pmic *p;
54 int ret;
55
56 ret = power_pca9450_init(0, 0x25);
57 if (ret)
58 printf("power init failed");
59 p = pmic_get("PCA9450");
60 pmic_probe(p);
61
62 /* BUCKxOUT_DVS0/1 control BUCK123 output */
63 pmic_reg_write(p, PCA9450_BUCK123_DVS, 0x29);
64
65 /* increase VDD_SOC to typical value 0.95V */
66 pmic_reg_write(p, PCA9450_BUCK2OUT_DVS0, 0x1C);
67
68 /* set WDOG_B_CFG to cold reset */
69 pmic_reg_write(p, PCA9450_RESET_CTRL, 0xA1);
70
71 return 0;
72 }
73
board_fit_config_name_match(const char * name)74 int board_fit_config_name_match(const char *name)
75 {
76 return 0;
77 }
78
79 #define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
80 #define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
81
82 static iomux_v3_cfg_t const uart_pads[] = {
83 MX8MP_PAD_UART2_RXD__UART2_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
84 MX8MP_PAD_UART2_TXD__UART2_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
85 };
86
87 static iomux_v3_cfg_t const wdog_pads[] = {
88 MX8MP_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
89 };
90
board_early_init_f(void)91 int board_early_init_f(void)
92 {
93 struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
94
95 imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
96
97 set_wdog_reset(wdog);
98
99 imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
100
101 return 0;
102 }
103
board_init_f(ulong dummy)104 void board_init_f(ulong dummy)
105 {
106 int ret;
107
108 arch_cpu_init();
109
110 init_uart_clk(1);
111
112 board_early_init_f();
113
114 ret = spl_early_init();
115 if (ret) {
116 debug("spl_early_init() failed: %d\n", ret);
117 hang();
118 }
119
120 preloader_console_init();
121
122 enable_tzc380();
123
124 setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
125
126 power_init_board();
127
128 /* DDR initialization */
129 spl_dram_init();
130 }
131