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
20 #include <asm/arch/imx-regs.h>
21 #include <asm/arch/iomux-mx28.h>
22 #include <asm/arch/clock.h>
23 #include <asm/arch/sys_proto.h>
24 #include <linux/mii.h>
31 #ifdef CONFIG_SPL_BUILD
35 DECLARE_GLOBAL_DATA_PTR;
41 static void init_clocks(void)
43 /* IO0 clock at 480MHz */
44 mxs_set_ioclk(MXC_IOCLK0, 480000);
45 /* IO1 clock at 480MHz */
46 mxs_set_ioclk(MXC_IOCLK1, 480000);
48 /* SSP0 clock at 96MHz */
49 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
50 /* SSP2 clock at 160MHz */
51 mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
52 /* SSP3 clock at 96MHz */
53 mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
56 #ifdef CONFIG_SPL_BUILD
57 void board_init_f(ulong arg)
60 preloader_console_init();
63 static int boot_tiva0, boot_tiva1;
65 /* Check if TIVAs request booting via U-Boot proper */
66 void spl_board_init(void)
68 struct gpio_desc btiva0, btiva1, en_3_3v;
72 * Setup GPIO0_0 (TIVA power enable pin) to be output high
73 * to allow TIVA startup.
75 ret = dm_gpio_lookup_name("GPIO0_0", &en_3_3v);
77 printf("Cannot get GPIO0_0\n");
79 ret = dm_gpio_request(&en_3_3v, "pwr_3_3v");
81 printf("Cannot request GPIO0_0\n");
83 /* Set GPIO0_0 to HIGH */
84 dm_gpio_set_dir_flags(&en_3_3v, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
86 ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
88 printf("Cannot get GPIO0_23\n");
90 ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
92 printf("Cannot get GPIO0_25\n");
94 ret = dm_gpio_request(&btiva0, "boot-tiva0");
96 printf("Cannot request GPIO0_23\n");
98 ret = dm_gpio_request(&btiva1, "boot-tiva1");
100 printf("Cannot request GPIO0_25\n");
102 dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
103 dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
107 boot_tiva0 = dm_gpio_get_value(&btiva0);
108 boot_tiva1 = dm_gpio_get_value(&btiva1);
111 void board_boot_order(u32 *spl_boot_list)
113 spl_boot_list[0] = BOOT_DEVICE_MMC1;
114 spl_boot_list[1] = BOOT_DEVICE_SPI;
117 int spl_start_uboot(void)
119 /* break into full u-boot on 'c' */
120 if (serial_tstc() && serial_getc() == 'c')
123 debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
124 return !boot_tiva0 || !boot_tiva1;
128 int board_early_init_f(void)
137 struct gpio_desc phy_rst;
140 /* Address of boot parameters */
141 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
146 ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
148 printf("Cannot get GPIO4_13\n");
152 ret = dm_gpio_request(&phy_rst, "phy-rst");
154 printf("Cannot request GPIO4_13\n");
158 dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
166 return mxs_dram_init();
169 #ifdef CONFIG_OF_BOARD_SETUP
170 static int fdt_fixup_l2switch(void *blob)
175 if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
176 ret = fdt_find_and_setprop(blob,
177 "/ahb@80080000/switch@800f0000",
178 "local-mac-address", ethaddr, 6, 1);
180 printf("%s: can't find usbether@1 node: %d\n",
187 int ft_board_setup(void *blob, bd_t *bd)
190 * i.MX28 L2 switch needs manual update (fixup) of eth MAC address
191 * (in 'local-mac-address' property) as it uses "switch@800f0000"
192 * node, not set by default FIT image handling code in
193 * "ethernet@800f0000"
195 fdt_fixup_l2switch(blob);
201 #endif /* CONFIG_SPL_BUILD */