board/freescale/mx6sxsabresd/mx6sxsabresd.c

   1 /*
   2  * Copyright (C) 2014 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <asm/arch/clock.h>
  10 #include <asm/arch/crm_regs.h>
  11 #include <asm/arch/iomux.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/mx6-pins.h>
  14 #include <asm/arch/sys_proto.h>
  15 #include <asm/gpio.h>
  16 #include <asm/imx-common/iomux-v3.h>
  17 #include <asm/io.h>
  18 #include <asm/imx-common/mxc_i2c.h>
  19 #include <linux/sizes.h>
  20 #include <common.h>
  21 #include <fsl_esdhc.h>
  22 #include <mmc.h>
  23 #include <i2c.h>
  24 #include <miiphy.h>
  25 #include <netdev.h>
  26 #include <power/pmic.h>
  27 #include <power/pfuze100_pmic.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |             \
  32         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  33         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  34
  35 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
  36         PAD_CTL_PUS_22K_UP  | PAD_CTL_SPEED_LOW |               \
  37         PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  38
  39 #define I2C_PAD_CTRL    (PAD_CTL_PKE | PAD_CTL_PUE |            \
  40         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  41         PAD_CTL_DSE_40ohm | PAD_CTL_HYS |                       \
  42         PAD_CTL_ODE)
  43
  44 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
  45         PAD_CTL_SPEED_HIGH   |                                   \
  46         PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST)
  47
  48 #define ENET_CLK_PAD_CTRL  (PAD_CTL_SPEED_MED | \
  49         PAD_CTL_DSE_120ohm   | PAD_CTL_SRE_FAST)
  50
  51 #define ENET_RX_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |          \
  52         PAD_CTL_SPEED_HIGH   | PAD_CTL_SRE_FAST)
  53
  54 #define I2C_PAD_CTRL    (PAD_CTL_PKE | PAD_CTL_PUE |            \
  55         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  56         PAD_CTL_DSE_40ohm | PAD_CTL_HYS |                       \
  57         PAD_CTL_ODE)
  58
  59 int dram_init(void)
  60 {
  61         gd->ram_size = PHYS_SDRAM_SIZE;
  62
  63         return 0;
  64 }
  65
  66 static iomux_v3_cfg_t const uart1_pads[] = {
  67         MX6_PAD_GPIO1_IO04__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  68         MX6_PAD_GPIO1_IO05__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  69 };
  70
  71 static iomux_v3_cfg_t const usdhc4_pads[] = {
  72         MX6_PAD_SD4_CLK__USDHC4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  73         MX6_PAD_SD4_CMD__USDHC4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  74         MX6_PAD_SD4_DATA0__USDHC4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  75         MX6_PAD_SD4_DATA1__USDHC4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  76         MX6_PAD_SD4_DATA2__USDHC4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  77         MX6_PAD_SD4_DATA3__USDHC4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  78         MX6_PAD_SD4_DATA7__GPIO6_IO_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
  79 };
  80
  81 static iomux_v3_cfg_t const fec1_pads[] = {
  82         MX6_PAD_ENET1_MDC__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  83         MX6_PAD_ENET1_MDIO__ENET1_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
  84         MX6_PAD_RGMII1_RX_CTL__ENET1_RX_EN | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  85         MX6_PAD_RGMII1_RD0__ENET1_RX_DATA_0 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  86         MX6_PAD_RGMII1_RD1__ENET1_RX_DATA_1 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  87         MX6_PAD_RGMII1_RD2__ENET1_RX_DATA_2 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  88         MX6_PAD_RGMII1_RD3__ENET1_RX_DATA_3 | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  89         MX6_PAD_RGMII1_RXC__ENET1_RX_CLK | MUX_PAD_CTRL(ENET_RX_PAD_CTRL),
  90         MX6_PAD_RGMII1_TX_CTL__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
  91         MX6_PAD_RGMII1_TD0__ENET1_TX_DATA_0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  92         MX6_PAD_RGMII1_TD1__ENET1_TX_DATA_1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  93         MX6_PAD_RGMII1_TD2__ENET1_TX_DATA_2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  94         MX6_PAD_RGMII1_TD3__ENET1_TX_DATA_3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  95         MX6_PAD_RGMII1_TXC__ENET1_RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  96 };
  97
  98 static iomux_v3_cfg_t const peri_3v3_pads[] = {
  99         MX6_PAD_QSPI1A_DATA0__GPIO4_IO_16 | MUX_PAD_CTRL(NO_PAD_CTRL),
 100 };
 101
 102 static iomux_v3_cfg_t const phy_control_pads[] = {
 103         /* 25MHz Ethernet PHY Clock */
 104         MX6_PAD_ENET2_RX_CLK__ENET2_REF_CLK_25M | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
 105
 106         /* ENET PHY Power */
 107         MX6_PAD_ENET2_COL__GPIO2_IO_6 | MUX_PAD_CTRL(NO_PAD_CTRL),
 108
 109         /* AR8031 PHY Reset */
 110         MX6_PAD_ENET2_CRS__GPIO2_IO_7 | MUX_PAD_CTRL(NO_PAD_CTRL),
 111 };
 112
 113 static void setup_iomux_uart(void)
 114 {
 115         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 116 }
 117
 118 static int setup_fec(void)
 119 {
 120         struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 121         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 122         int reg;
 123
 124         /* Use 125MHz anatop loopback REF_CLK1 for ENET1 */
 125         clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK, 0);
 126
 127         imx_iomux_v3_setup_multiple_pads(phy_control_pads,
 128                                          ARRAY_SIZE(phy_control_pads));
 129
 130         /* Enable the ENET power, active low */
 131         gpio_direction_output(IMX_GPIO_NR(2, 6) , 0);
 132
 133         /* Reset AR8031 PHY */
 134         gpio_direction_output(IMX_GPIO_NR(2, 7) , 0);
 135         udelay(500);
 136         gpio_set_value(IMX_GPIO_NR(2, 7), 1);
 137
 138         reg = readl(&anatop->pll_enet);
 139         reg |= BM_ANADIG_PLL_ENET_REF_25M_ENABLE;
 140         writel(reg, &anatop->pll_enet);
 141
 142         return enable_fec_anatop_clock(ENET_125MHz);
 143 }
 144
 145 int board_eth_init(bd_t *bis)
 146 {
 147         imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
 148         setup_fec();
 149
 150         return cpu_eth_init(bis);
 151 }
 152
 153 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
 154 /* I2C1 for PMIC */
 155 static struct i2c_pads_info i2c_pad_info1 = {
 156         .scl = {
 157                 .i2c_mode = MX6_PAD_GPIO1_IO00__I2C1_SCL | PC,
 158                 .gpio_mode = MX6_PAD_GPIO1_IO00__GPIO1_IO_0 | PC,
 159                 .gp = IMX_GPIO_NR(1, 0),
 160         },
 161         .sda = {
 162                 .i2c_mode = MX6_PAD_GPIO1_IO01__I2C1_SDA | PC,
 163                 .gpio_mode = MX6_PAD_GPIO1_IO01__GPIO1_IO_1 | PC,
 164                 .gp = IMX_GPIO_NR(1, 1),
 165         },
 166 };
 167
 168 static int pfuze_init(void)
 169 {
 170         struct pmic *p;
 171         int ret;
 172         unsigned int reg;
 173
 174         ret = power_pfuze100_init(I2C_PMIC);
 175         if (ret)
 176                 return ret;
 177
 178         p = pmic_get("PFUZE100");
 179         ret = pmic_probe(p);
 180         if (ret)
 181                 return ret;
 182
 183         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 184         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 185
 186         /* Set SW1AB standby voltage to 0.975V */
 187         pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
 188         reg &= ~0x3f;
 189         reg |= 0x1b;
 190         pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
 191
 192         /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
 193         pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
 194         reg &= ~0xc0;
 195         reg |= 0x40;
 196         pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
 197
 198         /* Set SW1C standby voltage to 0.975V */
 199         pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
 200         reg &= ~0x3f;
 201         reg |= 0x1b;
 202         pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
 203
 204         /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
 205         pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
 206         reg &= ~0xc0;
 207         reg |= 0x40;
 208         pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
 209
 210         /* Enable power of VGEN5 3V3, needed for SD3 */
 211         pmic_reg_read(p, PFUZE100_VGEN5VOL, &reg);
 212         reg &= ~0x1F;
 213         reg |= 0x1F;
 214         pmic_reg_write(p, PFUZE100_VGEN5VOL, reg);
 215
 216         return 0;
 217 }
 218
 219 int board_phy_config(struct phy_device *phydev)
 220 {
 221         /*
 222          * Enable 1.8V(SEL_1P5_1P8_POS_REG) on
 223          * Phy control debug reg 0
 224          */
 225         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
 226         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
 227
 228         /* rgmii tx clock delay enable */
 229         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
 230         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
 231
 232         if (phydev->drv->config)
 233                 phydev->drv->config(phydev);
 234
 235         return 0;
 236 }
 237
 238 int board_early_init_f(void)
 239 {
 240         setup_iomux_uart();
 241
 242         /* Enable PERI_3V3, which is used by SD2, ENET, LVDS, BT */
 243         imx_iomux_v3_setup_multiple_pads(peri_3v3_pads,
 244                                          ARRAY_SIZE(peri_3v3_pads));
 245
 246         /* Active high for ncp692 */
 247         gpio_direction_output(IMX_GPIO_NR(4, 16) , 1);
 248
 249         return 0;
 250 }
 251
 252 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
 253         {USDHC4_BASE_ADDR},
 254 };
 255
 256 int board_mmc_getcd(struct mmc *mmc)
 257 {
 258         return 1;       /* Assume boot SD always present */
 259 }
 260
 261 int board_mmc_init(bd_t *bis)
 262 {
 263         imx_iomux_v3_setup_multiple_pads(usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 264
 265         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 266         return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
 267 }
 268
 269 int board_init(void)
 270 {
 271         /* Address of boot parameters */
 272         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 273
 274 #ifdef CONFIG_SYS_I2C_MXC
 275         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 276 #endif
 277
 278         return 0;
 279 }
 280
 281 int board_late_init(void)
 282 {
 283         pfuze_init();
 284
 285         return 0;
 286 }
 287
 288 int checkboard(void)
 289 {
 290         puts("Board: MX6SX SABRE SDB\n");
 291
 292         return 0;
 293 }