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git.ipfire.org Git - people/ms/u-boot.git/blob - board/karo/tx25/tx25.c
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 static void mdelay(int n
)
38 DECLARE_GLOBAL_DATA_PTR
;
41 void tx25_fec_init(void)
43 struct iomuxc_mux_ctl
*muxctl
;
44 struct iomuxc_pad_ctl
*padctl
;
46 u32 gpio_mux_mode
= MX25_PIN_MUX_MODE(5);
47 struct gpio_regs
*gpio4
= (struct gpio_regs
*)IMX_GPIO4_BASE
;
48 struct gpio_regs
*gpio3
= (struct gpio_regs
*)IMX_GPIO3_BASE
;
49 u32 saved_rdata0_mode
, saved_rdata1_mode
, saved_rx_dv_mode
;
51 debug("tx25_fec_init\n");
53 * fec pin init is generic
58 * Set up the FEC_RESET_B and FEC_ENABLE GPIO pins.
60 * FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13
61 * FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11
63 muxctl
= (struct iomuxc_mux_ctl
*)IMX_IOPADMUX_BASE
;
64 padctl
= (struct iomuxc_pad_ctl
*)IMX_IOPADCTL_BASE
;
66 writel(gpio_mux_mode
, &muxctl
->pad_d13
);
67 writel(gpio_mux_mode
, &muxctl
->pad_d11
);
69 writel(0x0, &padctl
->pad_d13
);
70 writel(0x0, &padctl
->pad_d11
);
72 /* drop PHY power and assert reset (low) */
73 val
= readl(&gpio4
->gpio_dr
) & ~((1 << 7) | (1 << 9));
74 writel(val
, &gpio4
->gpio_dr
);
75 val
= readl(&gpio4
->gpio_dir
) | (1 << 7) | (1 << 9);
76 writel(val
, &gpio4
->gpio_dir
);
80 debug("resetting phy\n");
82 /* turn on PHY power leaving reset asserted */
83 val
= readl(&gpio4
->gpio_dr
) | 1 << 9;
84 writel(val
, &gpio4
->gpio_dr
);
89 * Setup some strapping pins that are latched by the PHY
93 * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5
94 * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5
95 * mode2 is tied high so nothing to do
98 * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
101 * save three current mux modes and set each to gpio mode
103 saved_rdata0_mode
= readl(&muxctl
->pad_fec_rdata0
);
104 saved_rdata1_mode
= readl(&muxctl
->pad_fec_rdata1
);
105 saved_rx_dv_mode
= readl(&muxctl
->pad_fec_rx_dv
);
107 writel(gpio_mux_mode
, &muxctl
->pad_fec_rdata0
);
108 writel(gpio_mux_mode
, &muxctl
->pad_fec_rdata1
);
109 writel(gpio_mux_mode
, &muxctl
->pad_fec_rx_dv
);
112 * set each to 1 and make each an output
114 val
= readl(&gpio3
->gpio_dr
) | (1 << 10) | (1 << 11) | (1 << 12);
115 writel(val
, &gpio3
->gpio_dr
);
116 val
= readl(&gpio3
->gpio_dir
) | (1 << 10) | (1 << 11) | (1 << 12);
117 writel(val
, &gpio3
->gpio_dir
);
119 mdelay(22); /* this value came from RedBoot */
124 val
= readl(&gpio4
->gpio_dr
) | 1 << 7;
125 writel(val
, &gpio4
->gpio_dr
);
126 writel(val
, &gpio4
->gpio_dr
);
133 writel(saved_rdata0_mode
, &muxctl
->pad_fec_rdata0
);
134 writel(saved_rdata1_mode
, &muxctl
->pad_fec_rdata1
);
135 writel(saved_rx_dv_mode
, &muxctl
->pad_fec_rx_dv
);
138 #define tx25_fec_init()
143 #ifdef CONFIG_MXC_UART
144 extern void mx25_uart1_init_pins(void);
146 mx25_uart1_init_pins();
148 /* board id for linux */
149 gd
->bd
->bi_arch_number
= MACH_TYPE_TX25
;
150 gd
->bd
->bi_boot_params
= PHYS_SDRAM_1
+ 0x100;
154 int board_late_init(void)
162 /* dram_init must store complete ramsize in gd->ram_size */
163 gd
->ram_size
= get_ram_size((volatile void *)PHYS_SDRAM_1
,
168 void dram_init_banksize(void)
170 gd
->bd
->bi_dram
[0].start
= PHYS_SDRAM_1
;
171 gd
->bd
->bi_dram
[0].size
= get_ram_size((volatile void *)PHYS_SDRAM_1
,
173 #if CONFIG_NR_DRAM_BANKS > 1
174 gd
->bd
->bi_dram
[1].start
= PHYS_SDRAM_2
;
175 gd
->bd
->bi_dram
[1].size
= get_ram_size((volatile void *)PHYS_SDRAM_2
,
184 printf("KARO TX25\n");