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 <cpu_func.h>
18 #include <env.h>
19 #include <init.h>
20 #include <asm/global_data.h>
21 #include <asm/gpio.h>
22 #include <asm/io.h>
23 #include <asm/arch/imx-regs.h>
24 #include <asm/arch/iomux-mx25.h>
25 #include <linux/delay.h>
26
27 DECLARE_GLOBAL_DATA_PTR;
28
board_init()29 int board_init()
30 {
31 static const iomux_v3_cfg_t sdhc1_pads[] = {
32 NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
33 NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
34 NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
35 NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
36 NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
37 NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
38 };
39
40 static const iomux_v3_cfg_t dig_out_pads[] = {
41 MX25_PAD_CSI_D8__GPIO_1_7, /* Ouput 1 Ctrl */
42 MX25_PAD_CSI_D7__GPIO_1_6, /* Ouput 2 Ctrl */
43 NEW_PAD_CTRL(MX25_PAD_CSI_D6__GPIO_1_31, 0), /* Ouput 1 Stat */
44 NEW_PAD_CTRL(MX25_PAD_CSI_D5__GPIO_1_30, 0), /* Ouput 2 Stat */
45 };
46
47 static const iomux_v3_cfg_t led_pads[] = {
48 MX25_PAD_CSI_D9__GPIO_4_21,
49 MX25_PAD_CSI_D4__GPIO_1_29,
50 };
51
52 static const iomux_v3_cfg_t can_pads[] = {
53 NEW_PAD_CTRL(MX25_PAD_GPIO_A__CAN1_TX, NO_PAD_CTRL),
54 NEW_PAD_CTRL(MX25_PAD_GPIO_B__CAN1_RX, NO_PAD_CTRL),
55 NEW_PAD_CTRL(MX25_PAD_GPIO_C__CAN2_TX, NO_PAD_CTRL),
56 NEW_PAD_CTRL(MX25_PAD_GPIO_D__CAN2_RX, NO_PAD_CTRL),
57 };
58
59 static const iomux_v3_cfg_t i2c3_pads[] = {
60 MX25_PAD_CSPI1_SS1__I2C3_DAT,
61 MX25_PAD_GPIO_E__I2C3_CLK,
62 };
63
64 icache_enable();
65
66 /* Setup of core voltage selection pin to run at 1.4V */
67 imx_iomux_v3_setup_pad(MX25_PAD_EXT_ARMCLK__GPIO_3_15); /* VCORE */
68 gpio_direction_output(IMX_GPIO_NR(3, 15), 1);
69
70 /* Setup of SD card pins*/
71 imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
72
73 /* Setup of digital output for USB power and OC */
74 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D3__GPIO_1_28); /* USB Power */
75 gpio_direction_output(IMX_GPIO_NR(1, 28), 1);
76
77 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D2__GPIO_1_27); /* USB OC */
78 gpio_direction_input(IMX_GPIO_NR(1, 18));
79
80 /* Setup of digital output control pins */
81 imx_iomux_v3_setup_multiple_pads(dig_out_pads,
82 ARRAY_SIZE(dig_out_pads));
83
84 /* Switch both output drivers off */
85 gpio_direction_output(IMX_GPIO_NR(1, 7), 0);
86 gpio_direction_output(IMX_GPIO_NR(1, 6), 0);
87
88 /* Setup of key input pin */
89 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_KPP_ROW0__GPIO_2_29, 0));
90 gpio_direction_input(IMX_GPIO_NR(2, 29));
91
92 /* Setup of status LED outputs */
93 imx_iomux_v3_setup_multiple_pads(led_pads, ARRAY_SIZE(led_pads));
94
95 /* Switch both LEDs off */
96 gpio_direction_output(IMX_GPIO_NR(4, 21), 0);
97 gpio_direction_output(IMX_GPIO_NR(1, 29), 0);
98
99 /* Setup of CAN1 and CAN2 signals */
100 imx_iomux_v3_setup_multiple_pads(can_pads, ARRAY_SIZE(can_pads));
101
102 /* Setup of I2C3 signals */
103 imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
104
105 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
106
107 return 0;
108 }
109
board_late_init(void)110 int board_late_init(void)
111 {
112 const char *e;
113
114 #ifdef CONFIG_FEC_MXC
115 /*
116 * FIXME: need to revisit this
117 * The original code enabled PUE and 100-k pull-down without PKE, so the right
118 * value here is likely:
119 * 0 for no pull
120 * or:
121 * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
122 */
123 #define FEC_OUT_PAD_CTRL 0
124
125 static const iomux_v3_cfg_t fec_pads[] = {
126 MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
127 MX25_PAD_FEC_RX_DV__FEC_RX_DV,
128 MX25_PAD_FEC_RDATA0__FEC_RDATA0,
129 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
130 NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
131 NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
132 MX25_PAD_FEC_MDIO__FEC_MDIO,
133 MX25_PAD_FEC_RDATA1__FEC_RDATA1,
134 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
135
136 MX25_PAD_UPLL_BYPCLK__GPIO_3_16, /* LAN-RESET */
137 MX25_PAD_UART2_CTS__FEC_RX_ER, /* FEC_RX_ERR */
138 };
139
140 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
141
142 /* assert PHY reset (low) */
143 gpio_direction_output(IMX_GPIO_NR(3, 16), 0);
144
145 udelay(5000);
146
147 /* deassert PHY reset */
148 gpio_set_value(IMX_GPIO_NR(3, 16), 1);
149
150 udelay(5000);
151 #endif
152
153 e = env_get("gs_base_board");
154 if (e != NULL) {
155 if (strcmp(e, "G283") == 0) {
156 int key = gpio_get_value(IMX_GPIO_NR(2, 29));
157
158 if (key) {
159 /* Switch on both LEDs to inidcate boot mode */
160 gpio_set_value(IMX_GPIO_NR(1, 29), 0);
161 gpio_set_value(IMX_GPIO_NR(4, 21), 0);
162
163 env_set("preboot", "run gs_slow_boot");
164 } else
165 env_set("preboot", "run gs_fast_boot");
166 }
167 }
168
169 return 0;
170 }
171
dram_init(void)172 int dram_init(void)
173 {
174 /* dram_init must store complete ramsize in gd->ram_size */
175 gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
176 PHYS_SDRAM_SIZE);
177 return 0;
178 }
179