board/freescale/imx8mp_evk/spl.c

   1 /*
   2  * Copyright 2018-2019 NXP
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <command.h>
   9 #include <cpu_func.h>
  10 #include <hang.h>
  11 #include <image.h>
  12 #include <init.h>
  13 #include <spl.h>
  14 #include <asm/io.h>
  15 #include <errno.h>
  16 #include <asm/io.h>
  17 #include <asm/mach-imx/iomux-v3.h>
  18 #include <asm/arch/imx8mp_pins.h>
  19 #include <asm/arch/sys_proto.h>
  20 #include <asm/mach-imx/boot_mode.h>
  21 #include <power/pmic.h>
  22
  23 #include <power/pca9450.h>
  24 #include <asm/arch/clock.h>
  25 #include <asm/mach-imx/gpio.h>
  26 #include <asm/mach-imx/mxc_i2c.h>
  27 #include <fsl_esdhc.h>
  28 #include <mmc.h>
  29 #include <asm/arch/ddr.h>
  30
  31 #include <dm/uclass.h>
  32 #include <dm/device.h>
  33 #include <dm/uclass-internal.h>
  34 #include <dm/device-internal.h>
  35
  36 DECLARE_GLOBAL_DATA_PTR;
  37
  38 int spl_board_boot_device(enum boot_device boot_dev_spl)
  39 {
  40         return BOOT_DEVICE_BOOTROM;
  41 }
  42
  43 void spl_dram_init(void)
  44 {
  45         ddr_init(&dram_timing);
  46 }
  47
  48 void spl_board_init(void)
  49 {
  50         struct udevice *dev;
  51         int ret;
  52
  53         puts("Normal Boot\n");
  54
  55         ret = uclass_get_device_by_name(UCLASS_CLK,
  56                                         "clock-controller@30380000",
  57                                         &dev);
  58         if (ret < 0)
  59                 printf("Failed to find clock node. Check device tree\n");
  60 }
  61
  62 #define I2C_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PE)
  63 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
  64 struct i2c_pads_info i2c_pad_info1 = {
  65         .scl = {
  66                 .i2c_mode = MX8MP_PAD_I2C1_SCL__I2C1_SCL | PC,
  67                 .gpio_mode = MX8MP_PAD_I2C1_SCL__GPIO5_IO14 | PC,
  68                 .gp = IMX_GPIO_NR(5, 14),
  69         },
  70         .sda = {
  71                 .i2c_mode = MX8MP_PAD_I2C1_SDA__I2C1_SDA | PC,
  72                 .gpio_mode = MX8MP_PAD_I2C1_SDA__GPIO5_IO15 | PC,
  73                 .gp = IMX_GPIO_NR(5, 15),
  74         },
  75 };
  76
  77 #ifdef CONFIG_POWER
  78 #define I2C_PMIC        0
  79 int power_init_board(void)
  80 {
  81         struct pmic *p;
  82         int ret;
  83
  84         ret = power_pca9450b_init(I2C_PMIC);
  85         if (ret)
  86                 printf("power init failed");
  87         p = pmic_get("PCA9450");
  88         pmic_probe(p);
  89
  90         /* BUCKxOUT_DVS0/1 control BUCK123 output */
  91         pmic_reg_write(p, PCA9450_BUCK123_DVS, 0x29);
  92
  93         /*
  94          * increase VDD_SOC to typical value 0.95V before first
  95          * DRAM access, set DVS1 to 0.85v for suspend.
  96          * Enable DVS control through PMIC_STBY_REQ and
  97          * set B1_ENMODE=1 (ON by PMIC_ON_REQ=H)
  98          */
  99         pmic_reg_write(p, PCA9450_BUCK1OUT_DVS0, 0x1C);
 100         pmic_reg_write(p, PCA9450_BUCK1OUT_DVS1, 0x14);
 101         pmic_reg_write(p, PCA9450_BUCK1CTRL, 0x59);
 102
 103         /* set WDOG_B_CFG to cold reset */
 104         pmic_reg_write(p, PCA9450_RESET_CTRL, 0xA1);
 105
 106         return 0;
 107 }
 108 #endif
 109
 110 #ifdef CONFIG_SPL_LOAD_FIT
 111 int board_fit_config_name_match(const char *name)
 112 {
 113         /* Just empty function now - can't decide what to choose */
 114         debug("%s: %s\n", __func__, name);
 115
 116         return 0;
 117 }
 118 #endif
 119
 120 void board_init_f(ulong dummy)
 121 {
 122         int ret;
 123
 124         arch_cpu_init();
 125
 126         init_uart_clk(1);
 127
 128         board_early_init_f();
 129
 130         timer_init();
 131
 132         preloader_console_init();
 133
 134         /* Clear the BSS. */
 135         memset(__bss_start, 0, __bss_end - __bss_start);
 136
 137         ret = spl_init();
 138         if (ret) {
 139                 debug("spl_init() failed: %d\n", ret);
 140                 hang();
 141         }
 142
 143         enable_tzc380();
 144
 145         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 146
 147         power_init_board();
 148
 149         /* DDR initialization */
 150         spl_dram_init();
 151
 152         board_init_r(NULL, 0);
 153 }