board/bachmann/ot1200/ot1200.c

   1 /*
   2  * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
   3  * Copyright (C) 2014, Bachmann electronic GmbH
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/arch/clock.h>
  10 #include <asm/arch/imx-regs.h>
  11 #include <asm/arch/iomux.h>
  12 #include <malloc.h>
  13 #include <asm/arch/mx6-pins.h>
  14 #include <asm/imx-common/iomux-v3.h>
  15 #include <asm/imx-common/mxc_i2c.h>
  16 #include <asm/imx-common/boot_mode.h>
  17 #include <asm/arch/crm_regs.h>
  18 #include <mmc.h>
  19 #include <fsl_esdhc.h>
  20 #include <netdev.h>
  21 #include <i2c.h>
  22 #include <pca953x.h>
  23 #include <asm/gpio.h>
  24 #include <phy.h>
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 #define OUTPUT_40OHM    (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
  29
  30 #define UART_PAD_CTRL   (PAD_CTL_PUS_100K_UP |                  \
  31         OUTPUT_40OHM | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  32
  33 #define USDHC_PAD_CTRL  (PAD_CTL_PUS_47K_UP |                   \
  34         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  35         PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  36
  37 #define ENET_PAD_CTRL   (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM |   \
  38         PAD_CTL_HYS)
  39
  40 #define SPI_PAD_CTRL    (PAD_CTL_HYS | OUTPUT_40OHM |           \
  41         PAD_CTL_SRE_FAST)
  42
  43 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM |   \
  44         PAD_CTL_HYS | PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  45
  46 int dram_init(void)
  47 {
  48         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  49
  50         return 0;
  51 }
  52
  53 static iomux_v3_cfg_t const uart1_pads[] = {
  54         MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  55         MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  56 };
  57
  58 static void setup_iomux_uart(void)
  59 {
  60         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  61 }
  62
  63 static iomux_v3_cfg_t const enet_pads[] = {
  64         MX6_PAD_KEY_ROW1__ENET_COL | MUX_PAD_CTRL(ENET_PAD_CTRL),
  65         MX6_PAD_KEY_COL3__ENET_CRS | MUX_PAD_CTRL(ENET_PAD_CTRL),
  66         MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
  67         MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  68         MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  69         MX6_PAD_GPIO_18__ENET_RX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  70         MX6_PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  71         MX6_PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  72         MX6_PAD_KEY_COL2__ENET_RX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  73         MX6_PAD_KEY_COL0__ENET_RX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  74         MX6_PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  75         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  76         MX6_PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  77         MX6_PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  78         MX6_PAD_KEY_ROW2__ENET_TX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  79         MX6_PAD_KEY_ROW0__ENET_TX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  80         MX6_PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  81 };
  82
  83 static void setup_iomux_enet(void)
  84 {
  85         imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
  86 }
  87
  88 static iomux_v3_cfg_t const ecspi1_pads[] = {
  89         MX6_PAD_DISP0_DAT3__ECSPI3_SS0  | MUX_PAD_CTRL(SPI_PAD_CTRL),
  90         MX6_PAD_DISP0_DAT4__ECSPI3_SS1  | MUX_PAD_CTRL(SPI_PAD_CTRL),
  91         MX6_PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
  92         MX6_PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
  93         MX6_PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
  94 };
  95
  96 static void setup_iomux_spi(void)
  97 {
  98         imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
  99 }
 100
 101 int board_early_init_f(void)
 102 {
 103         setup_iomux_uart();
 104         setup_iomux_spi();
 105
 106         return 0;
 107 }
 108
 109 static iomux_v3_cfg_t const usdhc3_pads[] = {
 110         MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 111         MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 112         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 113         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 114         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 115         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 116         MX6_PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 117         MX6_PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 118         MX6_PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 119         MX6_PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 120         MX6_PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 121 };
 122
 123 int board_mmc_getcd(struct mmc *mmc)
 124 {
 125         return 1;
 126 }
 127
 128 struct fsl_esdhc_cfg usdhc_cfg[] = {
 129         {USDHC3_BASE_ADDR},
 130 };
 131
 132 int board_mmc_init(bd_t *bis)
 133 {
 134         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 135         usdhc_cfg[0].max_bus_width = 8;
 136
 137         imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 138
 139         return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
 140 }
 141
 142 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 143
 144 /* I2C3 - IO expander  */
 145 static struct i2c_pads_info i2c_pad_info2 = {
 146         .scl = {
 147                 .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC,
 148                 .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC,
 149                 .gp = IMX_GPIO_NR(3, 17)
 150         },
 151         .sda = {
 152                 .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
 153                 .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC,
 154                 .gp = IMX_GPIO_NR(3, 18)
 155         }
 156 };
 157
 158 static iomux_v3_cfg_t const pwm_pad[] = {
 159         MX6_PAD_SD1_CMD__PWM4_OUT | MUX_PAD_CTRL(OUTPUT_40OHM),
 160 };
 161
 162 static void leds_on(void)
 163 {
 164         /* turn on all possible leds connected via GPIO expander */
 165         i2c_set_bus_num(2);
 166         pca953x_set_dir(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, PCA953X_DIR_OUT);
 167         pca953x_set_val(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, 0x0);
 168 }
 169
 170 static void backlight_lcd_off(void)
 171 {
 172         unsigned gpio = IMX_GPIO_NR(2, 0);
 173         gpio_direction_output(gpio, 0);
 174
 175         gpio = IMX_GPIO_NR(2, 3);
 176         gpio_direction_output(gpio, 0);
 177 }
 178
 179 int board_eth_init(bd_t *bis)
 180 {
 181         uint32_t base = IMX_FEC_BASE;
 182         struct mii_dev *bus = NULL;
 183         struct phy_device *phydev = NULL;
 184         int ret;
 185
 186         setup_iomux_enet();
 187
 188         bus = fec_get_miibus(base, -1);
 189         if (!bus)
 190                 return 0;
 191
 192         /* scan phy 0 and 5 */
 193         phydev = phy_find_by_mask(bus, 0x21, PHY_INTERFACE_MODE_RGMII);
 194         if (!phydev) {
 195                 free(bus);
 196                 return 0;
 197         }
 198
 199         /* depending on the phy address we can detect our board version */
 200         if (phydev->addr == 0)
 201                 setenv("boardver", "");
 202         else
 203                 setenv("boardver", "mr");
 204
 205         printf("using phy at %d\n", phydev->addr);
 206         ret = fec_probe(bis, -1, base, bus, phydev);
 207         if (ret) {
 208                 printf("FEC MXC: %s:failed\n", __func__);
 209                 free(phydev);
 210                 free(bus);
 211         }
 212         return 0;
 213 }
 214
 215 int board_init(void)
 216 {
 217         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 218
 219         backlight_lcd_off();
 220
 221         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 222
 223         leds_on();
 224
 225         /* enable ecspi3 clocks */
 226         enable_cspi_clock(1, 2);
 227
 228         return 0;
 229 }
 230
 231 int checkboard(void)
 232 {
 233         puts("Board: "CONFIG_SYS_BOARD"\n");
 234         return 0;
 235 }
 236
 237 #ifdef CONFIG_CMD_BMODE
 238 static const struct boot_mode board_boot_modes[] = {
 239         /* 4 bit bus width */
 240         {"mmc0",        MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 241         {NULL,          0},
 242 };
 243 #endif
 244
 245 int misc_init_r(void)
 246 {
 247 #ifdef CONFIG_CMD_BMODE
 248         add_board_boot_modes(board_boot_modes);
 249 #endif
 250         return 0;
 251 }