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