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/io.h>
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/iomux.h>
  13 #include <malloc.h>
  14 #include <asm/arch/mx6-pins.h>
  15 #include <asm/mach-imx/iomux-v3.h>
  16 #include <asm/mach-imx/sata.h>
  17 #include <asm/mach-imx/mxc_i2c.h>
  18 #include <asm/mach-imx/boot_mode.h>
  19 #include <asm/arch/crm_regs.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <mmc.h>
  22 #include <fsl_esdhc.h>
  23 #include <netdev.h>
  24 #include <i2c.h>
  25 #include <pca953x.h>
  26 #include <asm/gpio.h>
  27 #include <phy.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 #define OUTPUT_40OHM    (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
  32
  33 #define UART_PAD_CTRL   (PAD_CTL_PUS_100K_UP |                  \
  34         OUTPUT_40OHM | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  35
  36 #define USDHC_PAD_CTRL  (PAD_CTL_PUS_47K_UP |                   \
  37         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  38         PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  39
  40 #define ENET_PAD_CTRL   (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM |   \
  41         PAD_CTL_HYS)
  42
  43 #define SPI_PAD_CTRL    (PAD_CTL_HYS | OUTPUT_40OHM |           \
  44         PAD_CTL_SRE_FAST)
  45
  46 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP | OUTPUT_40OHM |   \
  47         PAD_CTL_HYS | PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  48
  49 int dram_init(void)
  50 {
  51         gd->ram_size = imx_ddr_size();
  52
  53         return 0;
  54 }
  55
  56 static iomux_v3_cfg_t const uart1_pads[] = {
  57         MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  58         MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  59 };
  60
  61 static void setup_iomux_uart(void)
  62 {
  63         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  64 }
  65
  66 static iomux_v3_cfg_t const enet_pads[] = {
  67         MX6_PAD_KEY_ROW1__ENET_COL | MUX_PAD_CTRL(ENET_PAD_CTRL),
  68         MX6_PAD_KEY_COL3__ENET_CRS | MUX_PAD_CTRL(ENET_PAD_CTRL),
  69         MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
  70         MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  71         MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  72         MX6_PAD_GPIO_18__ENET_RX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  73         MX6_PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  74         MX6_PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  75         MX6_PAD_KEY_COL2__ENET_RX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  76         MX6_PAD_KEY_COL0__ENET_RX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  77         MX6_PAD_ENET_CRS_DV__ENET_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  78         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL),
  79         MX6_PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  80         MX6_PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  81         MX6_PAD_KEY_ROW2__ENET_TX_DATA2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  82         MX6_PAD_KEY_ROW0__ENET_TX_DATA3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  83         MX6_PAD_ENET_TX_EN__ENET_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  84 };
  85
  86 static void setup_iomux_enet(void)
  87 {
  88         imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
  89 }
  90
  91 static iomux_v3_cfg_t const ecspi1_pads[] = {
  92         MX6_PAD_DISP0_DAT3__ECSPI3_SS0  | MUX_PAD_CTRL(SPI_PAD_CTRL),
  93         MX6_PAD_DISP0_DAT4__ECSPI3_SS1  | MUX_PAD_CTRL(SPI_PAD_CTRL),
  94         MX6_PAD_DISP0_DAT2__ECSPI3_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
  95         MX6_PAD_DISP0_DAT1__ECSPI3_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
  96         MX6_PAD_DISP0_DAT0__ECSPI3_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
  97 };
  98
  99 static void setup_iomux_spi(void)
 100 {
 101         imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
 102 }
 103
 104 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 105 {
 106         return (bus == 2 && cs == 0) ? (IMX_GPIO_NR(1, 3)) : -1;
 107 }
 108
 109 static iomux_v3_cfg_t const feature_pads[] = {
 110         /* SD card detect */
 111         MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(PAD_CTL_PUS_100K_DOWN),
 112
 113         /* eMMC soldered? */
 114         MX6_PAD_GPIO_19__GPIO4_IO05 | MUX_PAD_CTRL(PAD_CTL_PUS_100K_UP),
 115 };
 116
 117 static void setup_iomux_features(void)
 118 {
 119         imx_iomux_v3_setup_multiple_pads(feature_pads,
 120                 ARRAY_SIZE(feature_pads));
 121 }
 122
 123 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 124
 125 /* I2C2 - EEPROM */
 126 static struct i2c_pads_info i2c_pad_info1 = {
 127         .scl = {
 128                 .i2c_mode = MX6_PAD_EIM_EB2__I2C2_SCL | PC,
 129                 .gpio_mode = MX6_PAD_EIM_EB2__GPIO2_IO30 | PC,
 130                 .gp = IMX_GPIO_NR(2, 30)
 131         },
 132         .sda = {
 133                 .i2c_mode = MX6_PAD_EIM_D16__I2C2_SDA | PC,
 134                 .gpio_mode = MX6_PAD_EIM_D16__GPIO3_IO16 | PC,
 135                 .gp = IMX_GPIO_NR(3, 16)
 136         }
 137 };
 138
 139 /* I2C3 - IO expander  */
 140 static struct i2c_pads_info i2c_pad_info2 = {
 141         .scl = {
 142                 .i2c_mode = MX6_PAD_EIM_D17__I2C3_SCL | PC,
 143                 .gpio_mode = MX6_PAD_EIM_D17__GPIO3_IO17 | PC,
 144                 .gp = IMX_GPIO_NR(3, 17)
 145         },
 146         .sda = {
 147                 .i2c_mode = MX6_PAD_EIM_D18__I2C3_SDA | PC,
 148                 .gpio_mode = MX6_PAD_EIM_D18__GPIO3_IO18 | PC,
 149                 .gp = IMX_GPIO_NR(3, 18)
 150         }
 151 };
 152
 153 static void setup_iomux_i2c(void)
 154 {
 155         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 156         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 157 }
 158
 159 static void ccgr_init(void)
 160 {
 161         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 162
 163         writel(0x00C03F3F, &ccm->CCGR0);
 164         writel(0x0030FC33, &ccm->CCGR1);
 165         writel(0x0FFFC000, &ccm->CCGR2);
 166         writel(0x3FF00000, &ccm->CCGR3);
 167         writel(0x00FFF300, &ccm->CCGR4);
 168         writel(0x0F0000C3, &ccm->CCGR5);
 169         writel(0x000003FF, &ccm->CCGR6);
 170 }
 171
 172 int board_early_init_f(void)
 173 {
 174         ccgr_init();
 175         gpr_init();
 176
 177         setup_iomux_uart();
 178         setup_iomux_spi();
 179         setup_iomux_i2c();
 180         setup_iomux_features();
 181
 182         return 0;
 183 }
 184
 185 static iomux_v3_cfg_t const usdhc3_pads[] = {
 186         MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 187         MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 188         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 189         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 190         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 191         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 192         MX6_PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 193         MX6_PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 194         MX6_PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 195         MX6_PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 196         MX6_PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 197 };
 198
 199 iomux_v3_cfg_t const usdhc4_pads[] = {
 200         MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 201         MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 202         MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 203         MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 204         MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 205         MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 206 };
 207
 208 int board_mmc_getcd(struct mmc *mmc)
 209 {
 210         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 211         int ret;
 212
 213         if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
 214                 gpio_direction_input(IMX_GPIO_NR(4, 5));
 215                 ret = gpio_get_value(IMX_GPIO_NR(4, 5));
 216         } else {
 217                 gpio_direction_input(IMX_GPIO_NR(1, 5));
 218                 ret = !gpio_get_value(IMX_GPIO_NR(1, 5));
 219         }
 220
 221         return ret;
 222 }
 223
 224 struct fsl_esdhc_cfg usdhc_cfg[2] = {
 225         {USDHC3_BASE_ADDR},
 226         {USDHC4_BASE_ADDR},
 227 };
 228
 229 int board_mmc_init(bd_t *bis)
 230 {
 231         int ret;
 232         u32 index = 0;
 233
 234         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 235         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 236
 237         usdhc_cfg[0].max_bus_width = 8;
 238         usdhc_cfg[1].max_bus_width = 4;
 239
 240         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 241                 switch (index) {
 242                 case 0:
 243                         imx_iomux_v3_setup_multiple_pads(
 244                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 245                         break;
 246                 case 1:
 247                         imx_iomux_v3_setup_multiple_pads(
 248                                 usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 249                         break;
 250                 default:
 251                         printf("Warning: you configured more USDHC controllers"
 252                                 "(%d) then supported by the board (%d)\n",
 253                                 index + 1, CONFIG_SYS_FSL_USDHC_NUM);
 254                         return -EINVAL;
 255                 }
 256
 257                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 258                 if (ret)
 259                         return ret;
 260         }
 261
 262         return 0;
 263 }
 264
 265 static void leds_on(void)
 266 {
 267         /* turn on all possible leds connected via GPIO expander */
 268         i2c_set_bus_num(2);
 269         pca953x_set_dir(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, PCA953X_DIR_OUT);
 270         pca953x_set_val(CONFIG_SYS_I2C_PCA953X_ADDR, 0xffff, 0x0);
 271 }
 272
 273 static void backlight_lcd_off(void)
 274 {
 275         unsigned gpio = IMX_GPIO_NR(2, 0);
 276         gpio_direction_output(gpio, 0);
 277
 278         gpio = IMX_GPIO_NR(2, 3);
 279         gpio_direction_output(gpio, 0);
 280 }
 281
 282 int board_eth_init(bd_t *bis)
 283 {
 284         uint32_t base = IMX_FEC_BASE;
 285         struct mii_dev *bus = NULL;
 286         struct phy_device *phydev = NULL;
 287         int ret;
 288
 289         setup_iomux_enet();
 290
 291         bus = fec_get_miibus(base, -1);
 292         if (!bus)
 293                 return -EINVAL;
 294
 295         /* scan phy 0 and 5 */
 296         phydev = phy_find_by_mask(bus, 0x21, PHY_INTERFACE_MODE_RGMII);
 297         if (!phydev) {
 298                 ret = -EINVAL;
 299                 goto free_bus;
 300         }
 301
 302         /* depending on the phy address we can detect our board version */
 303         if (phydev->addr == 0)
 304                 env_set("boardver", "");
 305         else
 306                 env_set("boardver", "mr");
 307
 308         printf("using phy at %d\n", phydev->addr);
 309         ret = fec_probe(bis, -1, base, bus, phydev);
 310         if (ret)
 311                 goto free_phydev;
 312
 313         return 0;
 314
 315 free_phydev:
 316         free(phydev);
 317 free_bus:
 318         free(bus);
 319         return ret;
 320 }
 321
 322 int board_init(void)
 323 {
 324         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 325
 326         backlight_lcd_off();
 327
 328         leds_on();
 329
 330 #ifdef CONFIG_SATA
 331         setup_sata();
 332 #endif
 333
 334         return 0;
 335 }
 336
 337 int checkboard(void)
 338 {
 339         puts("Board: "CONFIG_SYS_BOARD"\n");
 340         return 0;
 341 }
 342
 343 #ifdef CONFIG_CMD_BMODE
 344 static const struct boot_mode board_boot_modes[] = {
 345         /* 4 bit bus width */
 346         {"mmc0",        MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 347         {NULL,          0},
 348 };
 349 #endif
 350
 351 int misc_init_r(void)
 352 {
 353 #ifdef CONFIG_CMD_BMODE
 354         add_board_boot_modes(board_boot_modes);
 355 #endif
 356         return 0;
 357 }