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>
22 #include <asm/arch/imx-regs.h>
23 #include <asm/arch/iomux-mx28.h>
24 #include <asm/arch/clock.h>
25 #include <asm/arch/sys_proto.h>
26 #include <linux/mii.h>
33 #ifdef CONFIG_SPL_BUILD
37 DECLARE_GLOBAL_DATA_PTR;
43 static void init_clocks(void)
45 /* IO0 clock at 480MHz */
46 mxs_set_ioclk(MXC_IOCLK0, 480000);
47 /* IO1 clock at 480MHz */
48 mxs_set_ioclk(MXC_IOCLK1, 480000);
50 /* SSP0 clock at 96MHz */
51 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
52 /* SSP2 clock at 160MHz */
53 mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
54 /* SSP3 clock at 96MHz */
55 mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
58 #ifdef CONFIG_SPL_BUILD
59 void board_init_f(ulong arg)
62 preloader_console_init();
65 static int boot_tiva0, boot_tiva1;
67 /* Check if TIVAs request booting via U-Boot proper */
68 void spl_board_init(void)
70 struct gpio_desc btiva0, btiva1, en_3_3v;
74 * Setup GPIO0_0 (TIVA power enable pin) to be output high
75 * to allow TIVA startup.
77 ret = dm_gpio_lookup_name("GPIO0_0", &en_3_3v);
79 printf("Cannot get GPIO0_0\n");
81 ret = dm_gpio_request(&en_3_3v, "pwr_3_3v");
83 printf("Cannot request GPIO0_0\n");
85 /* Set GPIO0_0 to HIGH */
86 dm_gpio_set_dir_flags(&en_3_3v, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
88 ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
90 printf("Cannot get GPIO0_23\n");
92 ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
94 printf("Cannot get GPIO0_25\n");
96 ret = dm_gpio_request(&btiva0, "boot-tiva0");
98 printf("Cannot request GPIO0_23\n");
100 ret = dm_gpio_request(&btiva1, "boot-tiva1");
102 printf("Cannot request GPIO0_25\n");
104 dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
105 dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
109 boot_tiva0 = dm_gpio_get_value(&btiva0);
110 boot_tiva1 = dm_gpio_get_value(&btiva1);
113 void board_boot_order(u32 *spl_boot_list)
115 spl_boot_list[0] = BOOT_DEVICE_MMC1;
116 spl_boot_list[1] = BOOT_DEVICE_SPI;
119 int spl_start_uboot(void)
121 /* break into full u-boot on 'c' */
122 if (serial_tstc() && serial_getc() == 'c')
125 debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
126 return !boot_tiva0 || !boot_tiva1;
130 int board_early_init_f(void)
139 struct gpio_desc phy_rst;
142 /* Address of boot parameters */
143 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
148 ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
150 printf("Cannot get GPIO4_13\n");
154 ret = dm_gpio_request(&phy_rst, "phy-rst");
156 printf("Cannot request GPIO4_13\n");
160 dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
168 return mxs_dram_init();
171 #ifdef CONFIG_OF_BOARD_SETUP
172 static int fdt_fixup_l2switch(void *blob)
177 if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
178 ret = fdt_find_and_setprop(blob,
179 "/ahb@80080000/switch@800f0000",
180 "local-mac-address", ethaddr, 6, 1);
182 printf("%s: can't find usbether@1 node: %d\n",
189 int ft_board_setup(void *blob, bd_t *bd)
192 * i.MX28 L2 switch needs manual update (fixup) of eth MAC address
193 * (in 'local-mac-address' property) as it uses "switch@800f0000"
194 * node, not set by default FIT image handling code in
195 * "ethernet@800f0000"
197 fdt_fixup_l2switch(blob);
203 #endif /* CONFIG_SPL_BUILD */