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Fabio Estevam29f75a52011-12-20 05:46:34 +00001/*
2 * Freescale MX28EVK board
3 *
4 * (C) Copyright 2011 Freescale Semiconductor, Inc.
5 *
6 * Author: Fabio Estevam <fabio.estevam@freescale.com>
7 *
8 * Based on m28evk.c:
9 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
10 * on behalf of DENX Software Engineering GmbH
11 *
12 * See file CREDITS for list of people who contributed to this
13 * project.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 */
25
26#include <common.h>
27#include <asm/gpio.h>
28#include <asm/io.h>
29#include <asm/arch/imx-regs.h>
30#include <asm/arch/iomux-mx28.h>
31#include <asm/arch/clock.h>
32#include <asm/arch/sys_proto.h>
33#include <linux/mii.h>
34#include <miiphy.h>
35#include <netdev.h>
36#include <errno.h>
37
38DECLARE_GLOBAL_DATA_PTR;
39
40/*
41 * Functions
42 */
43int board_early_init_f(void)
44{
45 /* IO0 clock at 480MHz */
46 mx28_set_ioclk(MXC_IOCLK0, 480000);
47 /* IO1 clock at 480MHz */
48 mx28_set_ioclk(MXC_IOCLK1, 480000);
49
50 /* SSP0 clock at 96MHz */
51 mx28_set_sspclk(MXC_SSPCLK0, 96000, 0);
52 /* SSP2 clock at 96MHz */
53 mx28_set_sspclk(MXC_SSPCLK2, 96000, 0);
54
Matthias Fuchs598aa2b2012-01-18 01:33:08 +000055#ifdef CONFIG_CMD_USB
56 mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
57 mxs_iomux_setup_pad(MX28_PAD_AUART2_RX__GPIO_3_8 |
58 MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL);
59 gpio_direction_output(MX28_PAD_AUART2_RX__GPIO_3_8, 1);
60#endif
61
Fabio Estevam29f75a52011-12-20 05:46:34 +000062 return 0;
63}
64
65int dram_init(void)
66{
67 return mx28_dram_init();
68}
69
70int board_init(void)
71{
72 /* Adress of boot parameters */
73 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
74
75 return 0;
76}
77
78#ifdef CONFIG_CMD_MMC
79static int mx28evk_mmc_wp(int id)
80{
81 if (id != 0) {
82 printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
83 return 1;
84 }
85
86 return gpio_get_value(MX28_PAD_SSP1_SCK__GPIO_2_12);
87}
88
89int board_mmc_init(bd_t *bis)
90{
91 /* Configure WP as input */
92 gpio_direction_input(MX28_PAD_SSP1_SCK__GPIO_2_12);
93
94 /* Configure MMC0 Power Enable */
95 gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
96
97 return mxsmmc_initialize(bis, 0, mx28evk_mmc_wp);
98}
99#endif
100
101#ifdef CONFIG_CMD_NET
102
103#define MII_OPMODE_STRAP_OVERRIDE 0x16
104#define MII_PHY_CTRL1 0x1e
105#define MII_PHY_CTRL2 0x1f
106
107int fecmxc_mii_postcall(int phy)
108{
109 miiphy_write("FEC1", phy, MII_BMCR, 0x9000);
110 miiphy_write("FEC1", phy, MII_OPMODE_STRAP_OVERRIDE, 0x0202);
111 if (phy == 3)
112 miiphy_write("FEC1", 3, MII_PHY_CTRL2, 0x8180);
113 return 0;
114}
115
116int board_eth_init(bd_t *bis)
117{
118 struct mx28_clkctrl_regs *clkctrl_regs =
119 (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
120 struct eth_device *dev;
121 int ret;
122
123 ret = cpu_eth_init(bis);
124
125 /* MX28EVK uses ENET_CLK PAD to drive FEC clock */
126 writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
127 &clkctrl_regs->hw_clkctrl_enet);
128
129 /* Power-on FECs */
130 gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
131
132 /* Reset FEC PHYs */
133 gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
134 udelay(200);
135 gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
136
137 ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
138 if (ret) {
139 puts("FEC MXS: Unable to init FEC0\n");
140 return ret;
141 }
142
143 ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
144 if (ret) {
145 puts("FEC MXS: Unable to init FEC1\n");
146 return ret;
147 }
148
149 dev = eth_get_dev_by_name("FEC0");
150 if (!dev) {
151 puts("FEC MXS: Unable to get FEC0 device entry\n");
152 return -EINVAL;
153 }
154
155 ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
156 if (ret) {
157 puts("FEC MXS: Unable to register FEC0 mii postcall\n");
158 return ret;
159 }
160
161 dev = eth_get_dev_by_name("FEC1");
162 if (!dev) {
163 puts("FEC MXS: Unable to get FEC1 device entry\n");
164 return -EINVAL;
165 }
166
167 ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
168 if (ret) {
169 puts("FEC MXS: Unable to register FEC1 mii postcall\n");
170 return ret;
171 }
172
173 return ret;
174}
175
176#endif