xref: /openbmc/u-boot/board/syteco/zmx25/zmx25.c (revision e8f80a5a)
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