1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (c) 2011 Graf-Syteco, Matthias Weisser
4 * <weisserm@arcor.de>
5 *
6 * Based on tx25.c:
7 * (C) Copyright 2009 DENX Software Engineering
8 * Author: John Rigby <jrigby@gmail.com>
9 *
10 * Based on imx27lite.c:
11 * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
12 * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
13 * And:
14 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
15 */
16 #include <common.h>
17 #include <asm/gpio.h>
18 #include <asm/io.h>
19 #include <asm/arch/imx-regs.h>
20 #include <asm/arch/iomux-mx25.h>
21
22 DECLARE_GLOBAL_DATA_PTR;
23
board_init()24 int board_init()
25 {
26 static const iomux_v3_cfg_t sdhc1_pads[] = {
27 NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
28 NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
29 NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
30 NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
31 NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
32 NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
33 };
34
35 static const iomux_v3_cfg_t dig_out_pads[] = {
36 MX25_PAD_CSI_D8__GPIO_1_7, /* Ouput 1 Ctrl */
37 MX25_PAD_CSI_D7__GPIO_1_6, /* Ouput 2 Ctrl */
38 NEW_PAD_CTRL(MX25_PAD_CSI_D6__GPIO_1_31, 0), /* Ouput 1 Stat */
39 NEW_PAD_CTRL(MX25_PAD_CSI_D5__GPIO_1_30, 0), /* Ouput 2 Stat */
40 };
41
42 static const iomux_v3_cfg_t led_pads[] = {
43 MX25_PAD_CSI_D9__GPIO_4_21,
44 MX25_PAD_CSI_D4__GPIO_1_29,
45 };
46
47 static const iomux_v3_cfg_t can_pads[] = {
48 NEW_PAD_CTRL(MX25_PAD_GPIO_A__CAN1_TX, NO_PAD_CTRL),
49 NEW_PAD_CTRL(MX25_PAD_GPIO_B__CAN1_RX, NO_PAD_CTRL),
50 NEW_PAD_CTRL(MX25_PAD_GPIO_C__CAN2_TX, NO_PAD_CTRL),
51 NEW_PAD_CTRL(MX25_PAD_GPIO_D__CAN2_RX, NO_PAD_CTRL),
52 };
53
54 static const iomux_v3_cfg_t i2c3_pads[] = {
55 MX25_PAD_CSPI1_SS1__I2C3_DAT,
56 MX25_PAD_GPIO_E__I2C3_CLK,
57 };
58
59 icache_enable();
60
61 /* Setup of core voltage selection pin to run at 1.4V */
62 imx_iomux_v3_setup_pad(MX25_PAD_EXT_ARMCLK__GPIO_3_15); /* VCORE */
63 gpio_direction_output(IMX_GPIO_NR(3, 15), 1);
64
65 /* Setup of SD card pins*/
66 imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
67
68 /* Setup of digital output for USB power and OC */
69 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D3__GPIO_1_28); /* USB Power */
70 gpio_direction_output(IMX_GPIO_NR(1, 28), 1);
71
72 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D2__GPIO_1_27); /* USB OC */
73 gpio_direction_input(IMX_GPIO_NR(1, 18));
74
75 /* Setup of digital output control pins */
76 imx_iomux_v3_setup_multiple_pads(dig_out_pads,
77 ARRAY_SIZE(dig_out_pads));
78
79 /* Switch both output drivers off */
80 gpio_direction_output(IMX_GPIO_NR(1, 7), 0);
81 gpio_direction_output(IMX_GPIO_NR(1, 6), 0);
82
83 /* Setup of key input pin */
84 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_KPP_ROW0__GPIO_2_29, 0));
85 gpio_direction_input(IMX_GPIO_NR(2, 29));
86
87 /* Setup of status LED outputs */
88 imx_iomux_v3_setup_multiple_pads(led_pads, ARRAY_SIZE(led_pads));
89
90 /* Switch both LEDs off */
91 gpio_direction_output(IMX_GPIO_NR(4, 21), 0);
92 gpio_direction_output(IMX_GPIO_NR(1, 29), 0);
93
94 /* Setup of CAN1 and CAN2 signals */
95 imx_iomux_v3_setup_multiple_pads(can_pads, ARRAY_SIZE(can_pads));
96
97 /* Setup of I2C3 signals */
98 imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
99
100 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
101
102 return 0;
103 }
104
board_late_init(void)105 int board_late_init(void)
106 {
107 const char *e;
108
109 #ifdef CONFIG_FEC_MXC
110 /*
111 * FIXME: need to revisit this
112 * The original code enabled PUE and 100-k pull-down without PKE, so the right
113 * value here is likely:
114 * 0 for no pull
115 * or:
116 * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
117 */
118 #define FEC_OUT_PAD_CTRL 0
119
120 static const iomux_v3_cfg_t fec_pads[] = {
121 MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
122 MX25_PAD_FEC_RX_DV__FEC_RX_DV,
123 MX25_PAD_FEC_RDATA0__FEC_RDATA0,
124 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
125 NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
126 NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
127 MX25_PAD_FEC_MDIO__FEC_MDIO,
128 MX25_PAD_FEC_RDATA1__FEC_RDATA1,
129 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
130
131 MX25_PAD_UPLL_BYPCLK__GPIO_3_16, /* LAN-RESET */
132 MX25_PAD_UART2_CTS__FEC_RX_ER, /* FEC_RX_ERR */
133 };
134
135 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
136
137 /* assert PHY reset (low) */
138 gpio_direction_output(IMX_GPIO_NR(3, 16), 0);
139
140 udelay(5000);
141
142 /* deassert PHY reset */
143 gpio_set_value(IMX_GPIO_NR(3, 16), 1);
144
145 udelay(5000);
146 #endif
147
148 e = env_get("gs_base_board");
149 if (e != NULL) {
150 if (strcmp(e, "G283") == 0) {
151 int key = gpio_get_value(IMX_GPIO_NR(2, 29));
152
153 if (key) {
154 /* Switch on both LEDs to inidcate boot mode */
155 gpio_set_value(IMX_GPIO_NR(1, 29), 0);
156 gpio_set_value(IMX_GPIO_NR(4, 21), 0);
157
158 env_set("preboot", "run gs_slow_boot");
159 } else
160 env_set("preboot", "run gs_fast_boot");
161 }
162 }
163
164 return 0;
165 }
166
dram_init(void)167 int dram_init(void)
168 {
169 /* dram_init must store complete ramsize in gd->ram_size */
170 gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
171 PHYS_SDRAM_SIZE);
172 return 0;
173 }
174