2 * (C) Copyright 2009 DENX Software Engineering
3 * Author: John Rigby <jrigby@gmail.com>
5 * Based on imx27lite.c:
6 * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
7 * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
9 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/arch/imx-regs.h>
30 #include <asm/arch/imx25-pinmux.h>
32 #include <asm/arch/sys_proto.h>
34 DECLARE_GLOBAL_DATA_PTR;
36 #ifdef CONFIG_SPL_BUILD
37 void board_init_f(ulong bootflag)
39 relocate_code(0, NULL, CONFIG_SPL_TEXT_BASE);
40 asm volatile("ldr pc, =nand_boot");
45 #define GPIO_FEC_RESET_B IMX_GPIO_NR(4, 7)
46 #define GPIO_FEC_ENABLE_B IMX_GPIO_NR(4, 9)
48 void tx25_fec_init(void)
50 struct iomuxc_mux_ctl *muxctl;
51 struct iomuxc_pad_ctl *padctl;
52 u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
53 u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
55 debug("tx25_fec_init\n");
57 * fec pin init is generic
62 * Set up the FEC_RESET_B and FEC_ENABLE GPIO pins.
64 * FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13
65 * FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11
67 muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
68 padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
70 writel(gpio_mux_mode, &muxctl->pad_d13);
71 writel(gpio_mux_mode, &muxctl->pad_d11);
73 writel(0x0, &padctl->pad_d13);
74 writel(0x0, &padctl->pad_d11);
76 /* drop PHY power and assert reset (low) */
77 gpio_direction_output(GPIO_FEC_RESET_B, 0);
78 gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
82 debug("resetting phy\n");
84 /* turn on PHY power leaving reset asserted */
85 gpio_set_value(GPIO_FEC_ENABLE_B, 1);
90 * Setup some strapping pins that are latched by the PHY
94 * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5
95 * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5
96 * mode2 is tied high so nothing to do
99 * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
102 * save three current mux modes and set each to gpio mode
104 saved_rdata0_mode = readl(&muxctl->pad_fec_rdata0);
105 saved_rdata1_mode = readl(&muxctl->pad_fec_rdata1);
106 saved_rx_dv_mode = readl(&muxctl->pad_fec_rx_dv);
108 writel(gpio_mux_mode, &muxctl->pad_fec_rdata0);
109 writel(gpio_mux_mode, &muxctl->pad_fec_rdata1);
110 writel(gpio_mux_mode, &muxctl->pad_fec_rx_dv);
113 * set each to 1 and make each an output
115 gpio_direction_output(IMX_GPIO_NR(3, 10), 1);
116 gpio_direction_output(IMX_GPIO_NR(3, 11), 1);
117 gpio_direction_output(IMX_GPIO_NR(3, 12), 1);
119 mdelay(22); /* this value came from RedBoot */
124 gpio_set_value(GPIO_FEC_RESET_B, 1);
131 writel(saved_rdata0_mode, &muxctl->pad_fec_rdata0);
132 writel(saved_rdata1_mode, &muxctl->pad_fec_rdata1);
133 writel(saved_rx_dv_mode, &muxctl->pad_fec_rx_dv);
136 #define tx25_fec_init()
141 #ifdef CONFIG_MXC_UART
142 mx25_uart1_init_pins();
144 /* board id for linux */
145 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
149 int board_late_init(void)
157 /* dram_init must store complete ramsize in gd->ram_size */
158 gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,
163 void dram_init_banksize(void)
165 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
166 gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1,
168 #if CONFIG_NR_DRAM_BANKS > 1
169 gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
170 gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
179 printf("KARO TX25\n");