1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2019 DENX Software Engineering
6 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
8 * Copyright (C) 2018 DENX Software Engineering
9 * Måns Rullgård, DENX Software Engineering, mans@mansr.com
11 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
12 * on behalf of DENX Software Engineering GmbH
17 #include <fdt_support.h>
21 #include <asm/arch/imx-regs.h>
22 #include <asm/arch/iomux-mx28.h>
23 #include <asm/arch/clock.h>
24 #include <asm/arch/sys_proto.h>
25 #include <linux/mii.h>
32 #ifdef CONFIG_SPL_BUILD
36 DECLARE_GLOBAL_DATA_PTR;
42 static void init_clocks(void)
44 /* IO0 clock at 480MHz */
45 mxs_set_ioclk(MXC_IOCLK0, 480000);
46 /* IO1 clock at 480MHz */
47 mxs_set_ioclk(MXC_IOCLK1, 480000);
49 /* SSP0 clock at 96MHz */
50 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
51 /* SSP2 clock at 160MHz */
52 mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
53 /* SSP3 clock at 96MHz */
54 mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
57 #ifdef CONFIG_SPL_BUILD
58 void board_init_f(ulong arg)
61 preloader_console_init();
64 static int boot_tiva0, boot_tiva1;
66 /* Check if TIVAs request booting via U-Boot proper */
67 void spl_board_init(void)
69 struct gpio_desc btiva0, btiva1, en_3_3v;
73 * Setup GPIO0_0 (TIVA power enable pin) to be output high
74 * to allow TIVA startup.
76 ret = dm_gpio_lookup_name("GPIO0_0", &en_3_3v);
78 printf("Cannot get GPIO0_0\n");
80 ret = dm_gpio_request(&en_3_3v, "pwr_3_3v");
82 printf("Cannot request GPIO0_0\n");
84 /* Set GPIO0_0 to HIGH */
85 dm_gpio_set_dir_flags(&en_3_3v, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
87 ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
89 printf("Cannot get GPIO0_23\n");
91 ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
93 printf("Cannot get GPIO0_25\n");
95 ret = dm_gpio_request(&btiva0, "boot-tiva0");
97 printf("Cannot request GPIO0_23\n");
99 ret = dm_gpio_request(&btiva1, "boot-tiva1");
101 printf("Cannot request GPIO0_25\n");
103 dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
104 dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
108 boot_tiva0 = dm_gpio_get_value(&btiva0);
109 boot_tiva1 = dm_gpio_get_value(&btiva1);
112 void board_boot_order(u32 *spl_boot_list)
114 spl_boot_list[0] = BOOT_DEVICE_MMC1;
115 spl_boot_list[1] = BOOT_DEVICE_SPI;
118 int spl_start_uboot(void)
120 /* break into full u-boot on 'c' */
121 if (serial_tstc() && serial_getc() == 'c')
124 debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
125 return !boot_tiva0 || !boot_tiva1;
129 int board_early_init_f(void)
138 struct gpio_desc phy_rst;
141 /* Address of boot parameters */
142 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
147 ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
149 printf("Cannot get GPIO4_13\n");
153 ret = dm_gpio_request(&phy_rst, "phy-rst");
155 printf("Cannot request GPIO4_13\n");
159 dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
167 return mxs_dram_init();
170 #ifdef CONFIG_OF_BOARD_SETUP
171 static int fdt_fixup_l2switch(void *blob)
176 if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
177 ret = fdt_find_and_setprop(blob,
178 "/ahb@80080000/switch@800f0000",
179 "local-mac-address", ethaddr, 6, 1);
181 printf("%s: can't find usbether@1 node: %d\n",
188 int ft_board_setup(void *blob, bd_t *bd)
191 * i.MX28 L2 switch needs manual update (fixup) of eth MAC address
192 * (in 'local-mac-address' property) as it uses "switch@800f0000"
193 * node, not set by default FIT image handling code in
194 * "ethernet@800f0000"
196 fdt_fixup_l2switch(blob);
202 #endif /* CONFIG_SPL_BUILD */