board/tqc/tqma6/tqma6.c

   1 /*
   2  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   3  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   4  *
   5  * Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x)
   6  * Author: Markus Niebel <markus.niebel@tq-group.com>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/mx6-pins.h>
  13 #include <asm/arch/imx-regs.h>
  14 #include <asm/arch/iomux.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <asm/errno.h>
  17 #include <asm/gpio.h>
  18 #include <asm/io.h>
  19 #include <asm/imx-common/mxc_i2c.h>
  20 #include <common.h>
  21 #include <fsl_esdhc.h>
  22 #include <libfdt.h>
  23 #include <i2c.h>
  24 #include <mmc.h>
  25 #include <power/pfuze100_pmic.h>
  26 #include <power/pmic.h>
  27
  28 #include "tqma6_bb.h"
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 #define USDHC_CLK_PAD_CTRL (PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW | \
  33         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  34
  35 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW | \
  36         PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  37
  38 #define GPIO_OUT_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
  39         PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
  40
  41 #define GPIO_IN_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
  42         PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
  43
  44 #define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
  45         PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  46
  47 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
  48         PAD_CTL_DSE_40ohm | PAD_CTL_HYS |                       \
  49         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  50
  51 int dram_init(void)
  52 {
  53         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  54
  55         return 0;
  56 }
  57
  58 static const uint16_t tqma6_emmc_dsr = 0x0100;
  59
  60 /* eMMC on USDHCI3 always present */
  61 static iomux_v3_cfg_t const tqma6_usdhc3_pads[] = {
  62         NEW_PAD_CTRL(MX6_PAD_SD3_CLK__SD3_CLK,          USDHC_PAD_CTRL),
  63         NEW_PAD_CTRL(MX6_PAD_SD3_CMD__SD3_CMD,          USDHC_PAD_CTRL),
  64         NEW_PAD_CTRL(MX6_PAD_SD3_DAT0__SD3_DATA0,       USDHC_PAD_CTRL),
  65         NEW_PAD_CTRL(MX6_PAD_SD3_DAT1__SD3_DATA1,       USDHC_PAD_CTRL),
  66         NEW_PAD_CTRL(MX6_PAD_SD3_DAT2__SD3_DATA2,       USDHC_PAD_CTRL),
  67         NEW_PAD_CTRL(MX6_PAD_SD3_DAT3__SD3_DATA3,       USDHC_PAD_CTRL),
  68         NEW_PAD_CTRL(MX6_PAD_SD3_DAT4__SD3_DATA4,       USDHC_PAD_CTRL),
  69         NEW_PAD_CTRL(MX6_PAD_SD3_DAT5__SD3_DATA5,       USDHC_PAD_CTRL),
  70         NEW_PAD_CTRL(MX6_PAD_SD3_DAT6__SD3_DATA6,       USDHC_PAD_CTRL),
  71         NEW_PAD_CTRL(MX6_PAD_SD3_DAT7__SD3_DATA7,       USDHC_PAD_CTRL),
  72         /* eMMC reset */
  73         NEW_PAD_CTRL(MX6_PAD_SD3_RST__SD3_RESET,        GPIO_OUT_PAD_CTRL),
  74 };
  75
  76 /*
  77  * According to board_mmc_init() the following map is done:
  78  * (U-boot device node)    (Physical Port)
  79  * mmc0                    eMMC (SD3) on TQMa6
  80  * mmc1 .. n               optional slots used on baseboard
  81  */
  82 struct fsl_esdhc_cfg tqma6_usdhc_cfg = {
  83         .esdhc_base = USDHC3_BASE_ADDR,
  84         .max_bus_width = 8,
  85 };
  86
  87 int board_mmc_getcd(struct mmc *mmc)
  88 {
  89         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
  90         int ret = 0;
  91
  92         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
  93                 /* eMMC/uSDHC3 is always present */
  94                 ret = 1;
  95         else
  96                 ret = tqma6_bb_board_mmc_getcd(mmc);
  97
  98         return ret;
  99 }
 100
 101 int board_mmc_getwp(struct mmc *mmc)
 102 {
 103         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 104         int ret = 0;
 105
 106         if (cfg->esdhc_base == USDHC3_BASE_ADDR)
 107                 /* eMMC/uSDHC3 is always present */
 108                 ret = 0;
 109         else
 110                 ret = tqma6_bb_board_mmc_getwp(mmc);
 111
 112         return ret;
 113 }
 114
 115 int board_mmc_init(bd_t *bis)
 116 {
 117         imx_iomux_v3_setup_multiple_pads(tqma6_usdhc3_pads,
 118                                          ARRAY_SIZE(tqma6_usdhc3_pads));
 119         tqma6_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 120         if (fsl_esdhc_initialize(bis, &tqma6_usdhc_cfg)) {
 121                 puts("Warning: failed to initialize eMMC dev\n");
 122         } else {
 123                 struct mmc *mmc = find_mmc_device(0);
 124                 if (mmc)
 125                         mmc_set_dsr(mmc, tqma6_emmc_dsr);
 126         }
 127
 128         tqma6_bb_board_mmc_init(bis);
 129
 130         return 0;
 131 }
 132
 133 static iomux_v3_cfg_t const tqma6_ecspi1_pads[] = {
 134         /* SS1 */
 135         NEW_PAD_CTRL(MX6_PAD_EIM_D19__GPIO3_IO19, SPI_PAD_CTRL),
 136         NEW_PAD_CTRL(MX6_PAD_EIM_D16__ECSPI1_SCLK, SPI_PAD_CTRL),
 137         NEW_PAD_CTRL(MX6_PAD_EIM_D17__ECSPI1_MISO, SPI_PAD_CTRL),
 138         NEW_PAD_CTRL(MX6_PAD_EIM_D18__ECSPI1_MOSI, SPI_PAD_CTRL),
 139 };
 140
 141 static unsigned const tqma6_ecspi1_cs[] = {
 142         IMX_GPIO_NR(3, 19),
 143 };
 144
 145 static void tqma6_iomuxc_spi(void)
 146 {
 147         unsigned i;
 148
 149         for (i = 0; i < ARRAY_SIZE(tqma6_ecspi1_cs); ++i)
 150                 gpio_direction_output(tqma6_ecspi1_cs[i], 1);
 151         imx_iomux_v3_setup_multiple_pads(tqma6_ecspi1_pads,
 152                                          ARRAY_SIZE(tqma6_ecspi1_pads));
 153 }
 154
 155 static struct i2c_pads_info tqma6_i2c3_pads = {
 156         /* I2C3: on board LM75, M24C64,  */
 157         .scl = {
 158                 .i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__I2C3_SCL,
 159                                          I2C_PAD_CTRL),
 160                 .gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_5__GPIO1_IO05,
 161                                           I2C_PAD_CTRL),
 162                 .gp = IMX_GPIO_NR(1, 5)
 163         },
 164         .sda = {
 165                 .i2c_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__I2C3_SDA,
 166                                          I2C_PAD_CTRL),
 167                 .gpio_mode = NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06,
 168                                           I2C_PAD_CTRL),
 169                 .gp = IMX_GPIO_NR(1, 6)
 170         }
 171 };
 172
 173 static void tqma6_setup_i2c(void)
 174 {
 175         /* use logical index for bus, e.g. I2C1 -> 0 */
 176         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &tqma6_i2c3_pads);
 177 }
 178
 179 int board_early_init_f(void)
 180 {
 181         return tqma6_bb_board_early_init_f();
 182 }
 183
 184 int board_init(void)
 185 {
 186         /* address of boot parameters */
 187         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 188
 189         tqma6_iomuxc_spi();
 190         tqma6_setup_i2c();
 191
 192         tqma6_bb_board_init();
 193
 194         return 0;
 195 }
 196
 197 static const char *tqma6_get_boardname(void)
 198 {
 199         u32 cpurev = get_cpu_rev();
 200
 201         switch ((cpurev & 0xFF000) >> 12) {
 202         case MXC_CPU_MX6SOLO:
 203                 return "TQMa6S";
 204                 break;
 205         case MXC_CPU_MX6DL:
 206                 return "TQMa6DL";
 207                 break;
 208         case MXC_CPU_MX6D:
 209                 return "TQMa6D";
 210                 break;
 211         case MXC_CPU_MX6Q:
 212                 return "TQMa6Q";
 213                 break;
 214         default:
 215                 return "??";
 216         };
 217 }
 218
 219 int board_late_init(void)
 220 {
 221         struct pmic *p;
 222         u32 reg;
 223
 224         setenv("board_name", tqma6_get_boardname());
 225
 226         /*
 227          * configure PFUZE100 PMIC:
 228          * TODO: should go to power_init_board if bus switching is
 229          * fixed in generic power code
 230          */
 231         power_pfuze100_init(TQMA6_PFUZE100_I2C_BUS);
 232         p = pmic_get("PFUZE100");
 233         if (p && !pmic_probe(p)) {
 234                 pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 235                 printf("PMIC: PFUZE100 ID=0x%02x\n", reg);
 236         }
 237
 238         tqma6_bb_board_late_init();
 239
 240         return 0;
 241 }
 242
 243 int checkboard(void)
 244 {
 245         printf("Board: %s on a %s\n", tqma6_get_boardname(),
 246                tqma6_bb_get_boardname());
 247         return 0;
 248 }
 249
 250 /*
 251  * Device Tree Support
 252  */
 253 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
 254 void ft_board_setup(void *blob, bd_t *bd)
 255 {
 256         /* bring in eMMC dsr settings */
 257         do_fixup_by_path_u32(blob,
 258                              "/soc/aips-bus@02100000/usdhc@02198000",
 259                              "dsr", tqma6_emmc_dsr, 2);
 260         tqma6_bb_ft_board_setup(blob, bd);
 261 }
 262 #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */