1 /* 2 * (c) 2011 Graf-Syteco, Matthias Weisser 3 * <weisserm@arcor.de> 4 * 5 * Based on tx25.c: 6 * (C) Copyright 2009 DENX Software Engineering 7 * Author: John Rigby <jrigby@gmail.com> 8 * 9 * Based on imx27lite.c: 10 * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net> 11 * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com> 12 * And: 13 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat 14 * 15 * SPDX-License-Identifier: GPL-2.0+ 16 */ 17 #include <common.h> 18 #include <asm/gpio.h> 19 #include <asm/io.h> 20 #include <asm/arch/imx-regs.h> 21 #include <asm/arch/iomux-mx25.h> 22 23 DECLARE_GLOBAL_DATA_PTR; 24 25 int board_init() 26 { 27 static const iomux_v3_cfg_t sdhc1_pads[] = { 28 NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL), 29 NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL), 30 NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL), 31 NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL), 32 NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL), 33 NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL), 34 }; 35 36 static const iomux_v3_cfg_t dig_out_pads[] = { 37 MX25_PAD_CSI_D8__GPIO_1_7, /* Ouput 1 Ctrl */ 38 MX25_PAD_CSI_D7__GPIO_1_6, /* Ouput 2 Ctrl */ 39 NEW_PAD_CTRL(MX25_PAD_CSI_D6__GPIO_1_31, 0), /* Ouput 1 Stat */ 40 NEW_PAD_CTRL(MX25_PAD_CSI_D5__GPIO_1_30, 0), /* Ouput 2 Stat */ 41 }; 42 43 static const iomux_v3_cfg_t led_pads[] = { 44 MX25_PAD_CSI_D9__GPIO_4_21, 45 MX25_PAD_CSI_D4__GPIO_1_29, 46 }; 47 48 static const iomux_v3_cfg_t can_pads[] = { 49 NEW_PAD_CTRL(MX25_PAD_GPIO_A__CAN1_TX, NO_PAD_CTRL), 50 NEW_PAD_CTRL(MX25_PAD_GPIO_B__CAN1_RX, NO_PAD_CTRL), 51 NEW_PAD_CTRL(MX25_PAD_GPIO_C__CAN2_TX, NO_PAD_CTRL), 52 NEW_PAD_CTRL(MX25_PAD_GPIO_D__CAN2_RX, NO_PAD_CTRL), 53 }; 54 55 static const iomux_v3_cfg_t i2c3_pads[] = { 56 MX25_PAD_CSPI1_SS1__I2C3_DAT, 57 MX25_PAD_GPIO_E__I2C3_CLK, 58 }; 59 60 icache_enable(); 61 62 /* Setup of core voltage selection pin to run at 1.4V */ 63 imx_iomux_v3_setup_pad(MX25_PAD_EXT_ARMCLK__GPIO_3_15); /* VCORE */ 64 gpio_direction_output(IMX_GPIO_NR(3, 15), 1); 65 66 /* Setup of SD card pins*/ 67 imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads)); 68 69 /* Setup of digital output for USB power and OC */ 70 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D3__GPIO_1_28); /* USB Power */ 71 gpio_direction_output(IMX_GPIO_NR(1, 28), 1); 72 73 imx_iomux_v3_setup_pad(MX25_PAD_CSI_D2__GPIO_1_27); /* USB OC */ 74 gpio_direction_input(IMX_GPIO_NR(1, 18)); 75 76 /* Setup of digital output control pins */ 77 imx_iomux_v3_setup_multiple_pads(dig_out_pads, 78 ARRAY_SIZE(dig_out_pads)); 79 80 /* Switch both output drivers off */ 81 gpio_direction_output(IMX_GPIO_NR(1, 7), 0); 82 gpio_direction_output(IMX_GPIO_NR(1, 6), 0); 83 84 /* Setup of key input pin */ 85 imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_KPP_ROW0__GPIO_2_29, 0)); 86 gpio_direction_input(IMX_GPIO_NR(2, 29)); 87 88 /* Setup of status LED outputs */ 89 imx_iomux_v3_setup_multiple_pads(led_pads, ARRAY_SIZE(led_pads)); 90 91 /* Switch both LEDs off */ 92 gpio_direction_output(IMX_GPIO_NR(4, 21), 0); 93 gpio_direction_output(IMX_GPIO_NR(1, 29), 0); 94 95 /* Setup of CAN1 and CAN2 signals */ 96 imx_iomux_v3_setup_multiple_pads(can_pads, ARRAY_SIZE(can_pads)); 97 98 /* Setup of I2C3 signals */ 99 imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads)); 100 101 gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; 102 103 return 0; 104 } 105 106 int board_late_init(void) 107 { 108 const char *e; 109 110 #ifdef CONFIG_FEC_MXC 111 /* 112 * FIXME: need to revisit this 113 * The original code enabled PUE and 100-k pull-down without PKE, so the right 114 * value here is likely: 115 * 0 for no pull 116 * or: 117 * PAD_CTL_PUS_100K_DOWN for 100-k pull-down 118 */ 119 #define FEC_OUT_PAD_CTRL 0 120 121 static const iomux_v3_cfg_t fec_pads[] = { 122 MX25_PAD_FEC_TX_CLK__FEC_TX_CLK, 123 MX25_PAD_FEC_RX_DV__FEC_RX_DV, 124 MX25_PAD_FEC_RDATA0__FEC_RDATA0, 125 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL), 126 NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL), 127 NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL), 128 MX25_PAD_FEC_MDIO__FEC_MDIO, 129 MX25_PAD_FEC_RDATA1__FEC_RDATA1, 130 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL), 131 132 MX25_PAD_UPLL_BYPCLK__GPIO_3_16, /* LAN-RESET */ 133 MX25_PAD_UART2_CTS__FEC_RX_ER, /* FEC_RX_ERR */ 134 }; 135 136 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); 137 138 /* assert PHY reset (low) */ 139 gpio_direction_output(IMX_GPIO_NR(3, 16), 0); 140 141 udelay(5000); 142 143 /* deassert PHY reset */ 144 gpio_set_value(IMX_GPIO_NR(3, 16), 1); 145 146 udelay(5000); 147 #endif 148 149 e = getenv("gs_base_board"); 150 if (e != NULL) { 151 if (strcmp(e, "G283") == 0) { 152 int key = gpio_get_value(IMX_GPIO_NR(2, 29)); 153 154 if (key) { 155 /* Switch on both LEDs to inidcate boot mode */ 156 gpio_set_value(IMX_GPIO_NR(1, 29), 0); 157 gpio_set_value(IMX_GPIO_NR(4, 21), 0); 158 159 setenv("preboot", "run gs_slow_boot"); 160 } else 161 setenv("preboot", "run gs_fast_boot"); 162 } 163 } 164 165 return 0; 166 } 167 168 int dram_init(void) 169 { 170 /* dram_init must store complete ramsize in gd->ram_size */ 171 gd->ram_size = get_ram_size((void *)PHYS_SDRAM, 172 PHYS_SDRAM_SIZE); 173 return 0; 174 } 175