uboot/board/ccv/xpress/xpress.c
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   1/*
   2 * Copyright (C) 2015-2016 Stefan Roese <sr@denx.de>
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#include <asm/arch/clock.h>
   8#include <asm/arch/iomux.h>
   9#include <asm/arch/imx-regs.h>
  10#include <asm/arch/crm_regs.h>
  11#include <asm/arch/mx6ul_pins.h>
  12#include <asm/arch/mx6-pins.h>
  13#include <asm/arch/sys_proto.h>
  14#include <asm/gpio.h>
  15#include <asm/imx-common/iomux-v3.h>
  16#include <asm/imx-common/boot_mode.h>
  17#include <asm/imx-common/mxc_i2c.h>
  18#include <asm/io.h>
  19#include <common.h>
  20#include <fsl_esdhc.h>
  21#include <i2c.h>
  22#include <miiphy.h>
  23#include <mmc.h>
  24#include <netdev.h>
  25#include <usb.h>
  26#include <usb/ehci-ci.h>
  27
  28DECLARE_GLOBAL_DATA_PTR;
  29
  30#define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |             \
  31        PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  32        PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  33
  34#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
  35        PAD_CTL_PUS_22K_UP  | PAD_CTL_SPEED_LOW |               \
  36        PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  37
  38#define I2C_PAD_CTRL    (PAD_CTL_PKE | PAD_CTL_PUE |            \
  39        PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  40        PAD_CTL_DSE_40ohm | PAD_CTL_HYS |                       \
  41        PAD_CTL_ODE)
  42
  43#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
  44        PAD_CTL_SPEED_HIGH   |                                  \
  45        PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST)
  46
  47#define MDIO_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE |     \
  48        PAD_CTL_DSE_48ohm   | PAD_CTL_SRE_FAST | PAD_CTL_ODE)
  49
  50#define ENET_CLK_PAD_CTRL  (PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST)
  51
  52#define ENET_RX_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |          \
  53        PAD_CTL_SPEED_HIGH   | PAD_CTL_SRE_FAST)
  54
  55#define OTGID_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
  56        PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW |                \
  57        PAD_CTL_DSE_80ohm | PAD_CTL_HYS |                       \
  58        PAD_CTL_SRE_FAST)
  59
  60#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
  61
  62static struct i2c_pads_info i2c_pad_info1 = {
  63        .scl = {
  64                .i2c_mode =  MX6_PAD_GPIO1_IO02__I2C1_SCL | PC,
  65                .gpio_mode = MX6_PAD_GPIO1_IO02__GPIO1_IO02 | PC,
  66                .gp = IMX_GPIO_NR(1, 2),
  67        },
  68        .sda = {
  69                .i2c_mode = MX6_PAD_GPIO1_IO03__I2C1_SDA | PC,
  70                .gpio_mode = MX6_PAD_GPIO1_IO03__GPIO1_IO03 | PC,
  71                .gp = IMX_GPIO_NR(1, 3),
  72        },
  73};
  74
  75static struct i2c_pads_info i2c_pad_info2 = {
  76        .scl = {
  77                .i2c_mode =  MX6_PAD_GPIO1_IO00__I2C2_SCL | PC,
  78                .gpio_mode = MX6_PAD_GPIO1_IO00__GPIO1_IO00 | PC,
  79                .gp = IMX_GPIO_NR(1, 0),
  80        },
  81        .sda = {
  82                .i2c_mode = MX6_PAD_GPIO1_IO01__I2C2_SDA | PC,
  83                .gpio_mode = MX6_PAD_GPIO1_IO01__GPIO1_IO01 | PC,
  84                .gp = IMX_GPIO_NR(1, 1),
  85        },
  86};
  87
  88static struct i2c_pads_info i2c_pad_info4 = {
  89        .scl = {
  90                .i2c_mode =  MX6_PAD_UART2_TX_DATA__I2C4_SCL | PC,
  91                .gpio_mode = MX6_PAD_UART2_TX_DATA__GPIO1_IO20 | PC,
  92                .gp = IMX_GPIO_NR(1, 20),
  93        },
  94        .sda = {
  95                .i2c_mode = MX6_PAD_UART2_RX_DATA__I2C4_SDA | PC,
  96                .gpio_mode = MX6_PAD_UART2_RX_DATA__GPIO1_IO21 | PC,
  97                .gp = IMX_GPIO_NR(1, 21),
  98        },
  99};
 100
 101int dram_init(void)
 102{
 103        gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
 104
 105        return 0;
 106}
 107
 108static iomux_v3_cfg_t const uart1_pads[] = {
 109        MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 110        MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
 111};
 112
 113static iomux_v3_cfg_t const uart4_pads[] = {
 114        MX6_PAD_UART4_TX_DATA__UART4_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 115        MX6_PAD_UART4_RX_DATA__UART4_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
 116};
 117
 118static iomux_v3_cfg_t const uart5_pads[] = {
 119        MX6_PAD_GPIO1_IO04__UART5_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 120        MX6_PAD_GPIO1_IO05__UART5_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
 121        MX6_PAD_GPIO1_IO09__UART5_DCE_CTS | MUX_PAD_CTRL(UART_PAD_CTRL),
 122        MX6_PAD_GPIO1_IO08__UART5_DCE_RTS | MUX_PAD_CTRL(UART_PAD_CTRL),
 123};
 124
 125static iomux_v3_cfg_t const uart8_pads[] = {
 126        MX6_PAD_ENET2_TX_DATA1__UART8_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
 127        MX6_PAD_ENET2_TX_EN__UART8_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
 128        MX6_PAD_ENET2_TX_CLK__UART8_DCE_CTS | MUX_PAD_CTRL(UART_PAD_CTRL),
 129        MX6_PAD_ENET2_RX_ER__UART8_DCE_RTS | MUX_PAD_CTRL(UART_PAD_CTRL),
 130};
 131
 132static void setup_iomux_uart(void)
 133{
 134        imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 135        imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
 136        imx_iomux_v3_setup_multiple_pads(uart5_pads, ARRAY_SIZE(uart5_pads));
 137        imx_iomux_v3_setup_multiple_pads(uart8_pads, ARRAY_SIZE(uart8_pads));
 138}
 139
 140/* eMMC on USDHC2 */
 141static iomux_v3_cfg_t const usdhc2_pads[] = {
 142        MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 143        MX6_PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 144        MX6_PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 145        MX6_PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 146        MX6_PAD_NAND_DATA02__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 147        MX6_PAD_NAND_DATA03__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 148        MX6_PAD_NAND_DATA04__USDHC2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 149        MX6_PAD_NAND_DATA05__USDHC2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 150        MX6_PAD_NAND_DATA06__USDHC2_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 151        MX6_PAD_NAND_DATA07__USDHC2_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 152
 153        /*
 154         * RST_B
 155         */
 156        MX6_PAD_NAND_ALE__USDHC2_RESET_B | MUX_PAD_CTRL(NO_PAD_CTRL),
 157};
 158
 159static struct fsl_esdhc_cfg usdhc_cfg = {
 160        .esdhc_base = USDHC2_BASE_ADDR,
 161        .max_bus_width = 8,
 162};
 163
 164#define USDHC2_PWR_GPIO IMX_GPIO_NR(1, 9)
 165
 166int board_mmc_getcd(struct mmc *mmc)
 167{
 168        /* eMMC is always present */
 169        return 1;
 170}
 171
 172int board_mmc_init(bd_t *bis)
 173{
 174        imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 175
 176        usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 177
 178        return fsl_esdhc_initialize(bis, &usdhc_cfg);
 179}
 180
 181#define USB_OTHERREGS_OFFSET    0x800
 182#define UCTRL_PWR_POL           (1 << 9)
 183
 184static iomux_v3_cfg_t const usb_otg_pads[] = {
 185        /* OTG1 */
 186        MX6_PAD_SD1_CMD__USB_OTG1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 187        MX6_PAD_SD1_DATA0__ANATOP_OTG1_ID | MUX_PAD_CTRL(OTGID_PAD_CTRL),
 188        /* OTG2 */
 189        MX6_PAD_SD1_DATA1__USB_OTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 190        MX6_PAD_SD1_DATA3__ANATOP_OTG2_ID | MUX_PAD_CTRL(OTGID_PAD_CTRL),
 191};
 192
 193static void setup_usb(void)
 194{
 195        imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
 196                                         ARRAY_SIZE(usb_otg_pads));
 197}
 198
 199int board_usb_phy_mode(int port)
 200{
 201        if (port == 1)
 202                return USB_INIT_HOST;
 203        else
 204                return usb_phy_mode(port);
 205}
 206
 207int board_ehci_hcd_init(int port)
 208{
 209        u32 *usbnc_usb_ctrl;
 210
 211        if (port > 1)
 212                return -EINVAL;
 213
 214        usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
 215                                 port * 4);
 216
 217        /* Set Power polarity */
 218        setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);
 219
 220        return 0;
 221}
 222
 223static iomux_v3_cfg_t const fec1_pads[] = {
 224        MX6_PAD_GPIO1_IO06__ENET1_MDIO | MUX_PAD_CTRL(MDIO_PAD_CTRL),
 225        MX6_PAD_GPIO1_IO07__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
 226        MX6_PAD_ENET1_TX_DATA0__ENET1_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 227        MX6_PAD_ENET1_TX_DATA1__ENET1_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 228        MX6_PAD_ENET1_TX_EN__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
 229        MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
 230        MX6_PAD_ENET1_RX_DATA0__ENET1_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 231        MX6_PAD_ENET1_RX_DATA1__ENET1_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 232        MX6_PAD_ENET1_RX_ER__ENET1_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL),
 233        MX6_PAD_ENET1_RX_EN__ENET1_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
 234
 235        /* ENET1 reset */
 236        MX6_PAD_CSI_MCLK__GPIO4_IO17 | MUX_PAD_CTRL(NO_PAD_CTRL),
 237        /* ENET1 interrupt */
 238        MX6_PAD_CSI_PIXCLK__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 239};
 240
 241#define ENET_PHY_RESET_GPIO IMX_GPIO_NR(4, 17)
 242
 243int board_eth_init(bd_t *bis)
 244{
 245        int ret;
 246
 247        imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
 248
 249        /* Reset LAN8742 PHY */
 250        ret = gpio_request(ENET_PHY_RESET_GPIO, "phy-reset");
 251        if (!ret)
 252                gpio_direction_output(ENET_PHY_RESET_GPIO , 0);
 253        mdelay(10);
 254        gpio_set_value(ENET_PHY_RESET_GPIO, 1);
 255        mdelay(10);
 256
 257        return cpu_eth_init(bis);
 258}
 259
 260static int setup_fec(int fec_id)
 261{
 262        struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 263        int ret;
 264
 265        /*
 266         * Use 50M anatop loopback REF_CLK1 for ENET1,
 267         * clear gpr1[13], set gpr1[17].
 268         */
 269        clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
 270                        IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
 271
 272        ret = enable_fec_anatop_clock(fec_id, ENET_50MHZ);
 273        if (ret)
 274                return ret;
 275
 276        enable_enet_clk(1);
 277
 278        return 0;
 279}
 280
 281int board_phy_config(struct phy_device *phydev)
 282{
 283        if (phydev->drv->config)
 284                phydev->drv->config(phydev);
 285
 286        return 0;
 287}
 288
 289int board_early_init_f(void)
 290{
 291        setup_iomux_uart();
 292
 293        return 0;
 294}
 295
 296int board_init(void)
 297{
 298        /* Address of boot parameters */
 299        gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 300
 301        setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 302        setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 303        setup_i2c(3, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info4);
 304
 305        setup_fec(CONFIG_FEC_ENET_DEV);
 306
 307        setup_usb();
 308
 309        return 0;
 310}
 311
 312static const struct boot_mode board_boot_modes[] = {
 313        /* 8 bit bus width */
 314        {"emmc", MAKE_CFGVAL(0x60, 0x28, 0x00, 0x00)},
 315        { NULL, 0 },
 316};
 317
 318int board_late_init(void)
 319{
 320        add_board_boot_modes(board_boot_modes);
 321        setenv("board_name", "xpress");
 322
 323        return 0;
 324}
 325
 326int checkboard(void)
 327{
 328        puts("Board: CCV-EVA xPress\n");
 329
 330        return 0;
 331}
 332