LXR uboot/board/udoo/udoo.c

   1/*
   2 * Copyright (C) 2013 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/imx-regs.h>
  11#include <asm/arch/iomux.h>
  12#include <malloc.h>
  13#include <asm/arch/mx6-pins.h>
  14#include <linux/errno.h>
  15#include <asm/gpio.h>
  16#include <asm/imx-common/iomux-v3.h>
  17#include <asm/imx-common/sata.h>
  18#include <mmc.h>
  19#include <fsl_esdhc.h>
  20#include <asm/arch/crm_regs.h>
  21#include <asm/io.h>
  22#include <asm/arch/sys_proto.h>
  23#include <micrel.h>
  24#include <miiphy.h>
  25#include <netdev.h>
  26
  27DECLARE_GLOBAL_DATA_PTR;
  28
  29#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  30        PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  31        PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  32
  33#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  34        PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | 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 WDT_EN          IMX_GPIO_NR(5, 4)
  41#define WDT_TRG         IMX_GPIO_NR(3, 19)
  42
  43int dram_init(void)
  44{
  45        gd->ram_size = imx_ddr_size();
  46
  47        return 0;
  48}
  49
  50static iomux_v3_cfg_t const uart2_pads[] = {
  51        IOMUX_PADS(PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  52        IOMUX_PADS(PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  53};
  54
  55static iomux_v3_cfg_t const usdhc3_pads[] = {
  56        IOMUX_PADS(PAD_SD3_CLK__SD3_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  57        IOMUX_PADS(PAD_SD3_CMD__SD3_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  58        IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  59        IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  60        IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  61        IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  62};
  63
  64static iomux_v3_cfg_t const wdog_pads[] = {
  65        IOMUX_PADS(PAD_EIM_A24__GPIO5_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL)),
  66        IOMUX_PADS(PAD_EIM_D19__GPIO3_IO19),
  67};
  68
  69int mx6_rgmii_rework(struct phy_device *phydev)
  70{
  71        /*
  72         * Bug: Apparently uDoo does not works with Gigabit switches...
  73         * Limiting speed to 10/100Mbps, and setting master mode, seems to
  74         * be the only way to have a successfull PHY auto negotiation.
  75         * How to fix: Understand why Linux kernel do not have this issue.
  76         */
  77        phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 0x1c00);
  78
  79        /* control data pad skew - devaddr = 0x02, register = 0x04 */
  80        ksz9031_phy_extended_write(phydev, 0x02,
  81                                   MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
  82                                   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
  83        /* rx data pad skew - devaddr = 0x02, register = 0x05 */
  84        ksz9031_phy_extended_write(phydev, 0x02,
  85                                   MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
  86                                   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
  87        /* tx data pad skew - devaddr = 0x02, register = 0x05 */
  88        ksz9031_phy_extended_write(phydev, 0x02,
  89                                   MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
  90                                   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000);
  91        /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */
  92        ksz9031_phy_extended_write(phydev, 0x02,
  93                                   MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
  94                                   MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03FF);
  95        return 0;
  96}
  97
  98static iomux_v3_cfg_t const enet_pads1[] = {
  99        IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO             | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 100        IOMUX_PADS(PAD_ENET_MDC__ENET_MDC               | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 101        IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 102        IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 103        IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 104        IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 105        IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 106        IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL       | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 107        IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK        | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 108        IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 109        /* RGMII reset */
 110        IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23              | MUX_PAD_CTRL(NO_PAD_CTRL)),
 111        /* Ethernet power supply */
 112        IOMUX_PADS(PAD_EIM_EB3__GPIO2_IO31              | MUX_PAD_CTRL(NO_PAD_CTRL)),
 113        /* pin 32 - 1 - (MODE0) all */
 114        IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25            | MUX_PAD_CTRL(NO_PAD_CTRL)),
 115        /* pin 31 - 1 - (MODE1) all */
 116        IOMUX_PADS(PAD_RGMII_RD1__GPIO6_IO27            | MUX_PAD_CTRL(NO_PAD_CTRL)),
 117        /* pin 28 - 1 - (MODE2) all */
 118        IOMUX_PADS(PAD_RGMII_RD2__GPIO6_IO28            | MUX_PAD_CTRL(NO_PAD_CTRL)),
 119        /* pin 27 - 1 - (MODE3) all */
 120        IOMUX_PADS(PAD_RGMII_RD3__GPIO6_IO29            | MUX_PAD_CTRL(NO_PAD_CTRL)),
 121        /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
 122        IOMUX_PADS(PAD_RGMII_RX_CTL__GPIO6_IO24 | MUX_PAD_CTRL(NO_PAD_CTRL)),
 123};
 124
 125static iomux_v3_cfg_t const enet_pads2[] = {
 126        IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 127        IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 128        IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 129        IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 130        IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL       | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 131};
 132
 133static void setup_iomux_enet(void)
 134{
 135        SETUP_IOMUX_PADS(enet_pads1);
 136        udelay(20);
 137        gpio_direction_output(IMX_GPIO_NR(2, 31), 1); /* Power supply on */
 138
 139        gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* assert PHY rst */
 140
 141        gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
 142        gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
 143        gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
 144        gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
 145        gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
 146        udelay(1000);
 147
 148        gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* deassert PHY rst */
 149
 150        /* Need 100ms delay to exit from reset. */
 151        udelay(1000 * 100);
 152
 153        gpio_free(IMX_GPIO_NR(6, 24));
 154        gpio_free(IMX_GPIO_NR(6, 25));
 155        gpio_free(IMX_GPIO_NR(6, 27));
 156        gpio_free(IMX_GPIO_NR(6, 28));
 157        gpio_free(IMX_GPIO_NR(6, 29));
 158
 159        SETUP_IOMUX_PADS(enet_pads2);
 160}
 161
 162static void setup_iomux_uart(void)
 163{
 164        SETUP_IOMUX_PADS(uart2_pads);
 165}
 166
 167static void setup_iomux_wdog(void)
 168{
 169        SETUP_IOMUX_PADS(wdog_pads);
 170        gpio_direction_output(WDT_TRG, 0);
 171        gpio_direction_output(WDT_EN, 1);
 172        gpio_direction_input(WDT_TRG);
 173}
 174
 175static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR };
 176
 177int board_mmc_getcd(struct mmc *mmc)
 178{
 179        return 1; /* Always present */
 180}
 181
 182int board_eth_init(bd_t *bis)
 183{
 184        uint32_t base = IMX_FEC_BASE;
 185        struct mii_dev *bus = NULL;
 186        struct phy_device *phydev = NULL;
 187        int ret;
 188
 189        setup_iomux_enet();
 190
 191#ifdef CONFIG_FEC_MXC
 192        bus = fec_get_miibus(base, -1);
 193        if (!bus)
 194                return -EINVAL;
 195        /* scan phy 4,5,6,7 */
 196        phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
 197
 198        if (!phydev) {
 199                ret = -EINVAL;
 200                goto free_bus;
 201        }
 202        printf("using phy at %d\n", phydev->addr);
 203        ret  = fec_probe(bis, -1, base, bus, phydev);
 204        if (ret)
 205                goto free_phydev;
 206#endif
 207        return 0;
 208
 209free_phydev:
 210        free(phydev);
 211free_bus:
 212        free(bus);
 213        return ret;
 214}
 215
 216int board_mmc_init(bd_t *bis)
 217{
 218        SETUP_IOMUX_PADS(usdhc3_pads);
 219        usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 220        usdhc_cfg.max_bus_width = 4;
 221
 222        return fsl_esdhc_initialize(bis, &usdhc_cfg);
 223}
 224
 225int board_early_init_f(void)
 226{
 227        setup_iomux_wdog();
 228        setup_iomux_uart();
 229
 230        return 0;
 231}
 232
 233int board_phy_config(struct phy_device *phydev)
 234{
 235        mx6_rgmii_rework(phydev);
 236        if (phydev->drv->config)
 237                phydev->drv->config(phydev);
 238
 239        return 0;
 240}
 241
 242int board_init(void)
 243{
 244        /* address of boot parameters */
 245        gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 246
 247#ifdef CONFIG_CMD_SATA
 248        if (is_cpu_type(MXC_CPU_MX6Q))
 249                setup_sata();
 250#endif
 251        return 0;
 252}
 253
 254int board_late_init(void)
 255{
 256#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 257        if (is_cpu_type(MXC_CPU_MX6Q))
 258                setenv("board_rev", "MX6Q");
 259        else
 260                setenv("board_rev", "MX6DL");
 261#endif
 262        return 0;
 263}
 264
 265int checkboard(void)
 266{
 267        if (is_cpu_type(MXC_CPU_MX6Q))
 268                puts("Board: Udoo Quad\n");
 269        else
 270                puts("Board: Udoo DualLite\n");
 271
 272        return 0;
 273}
 274