1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (c) 2011 Graf-Syteco, Matthias Weisser 4 * <weisserm (at) arcor.de> 5 * 6 * Based on tx25.c: 7 * (C) Copyright 2009 DENX Software Engineering 8 * Author: John Rigby <jrigby (at) gmail.com> 9 * 10 * Based on imx27lite.c: 11 * Copyright (C) 2008,2009 Eric Jarrige <jorasse (at) users.sourceforge.net> 12 * Copyright (C) 2009 Ilya Yanok <yanok (at) 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 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 } 104 105 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 } 166 167 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
