uboot/board/tqc/tqma6/tqma6_wru4.c
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   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 * Copyright (C) 2015 Stefan Roese <sr@denx.de>
   9 *
  10 * SPDX-License-Identifier:     GPL-2.0+
  11 */
  12
  13#include <asm/io.h>
  14#include <asm/arch/clock.h>
  15#include <asm/arch/mx6-pins.h>
  16#include <asm/arch/imx-regs.h>
  17#include <asm/arch/iomux.h>
  18#include <asm/arch/sys_proto.h>
  19#include <linux/errno.h>
  20#include <asm/gpio.h>
  21#include <asm/mach-imx/boot_mode.h>
  22#include <asm/mach-imx/mxc_i2c.h>
  23
  24#include <common.h>
  25#include <fsl_esdhc.h>
  26#include <libfdt.h>
  27#include <malloc.h>
  28#include <i2c.h>
  29#include <micrel.h>
  30#include <miiphy.h>
  31#include <mmc.h>
  32#include <netdev.h>
  33
  34#include "tqma6_bb.h"
  35
  36/* UART */
  37#define UART4_PAD_CTRL (                        \
  38                PAD_CTL_HYS |                   \
  39                PAD_CTL_PUS_100K_UP |           \
  40                PAD_CTL_PUE |                   \
  41                PAD_CTL_PKE |                   \
  42                PAD_CTL_SPEED_MED |             \
  43                PAD_CTL_DSE_40ohm |             \
  44                PAD_CTL_SRE_SLOW                \
  45                )
  46
  47static iomux_v3_cfg_t const uart4_pads[] = {
  48        NEW_PAD_CTRL(MX6_PAD_CSI0_DAT17__UART4_CTS_B, UART4_PAD_CTRL),
  49        NEW_PAD_CTRL(MX6_PAD_CSI0_DAT16__UART4_RTS_B, UART4_PAD_CTRL),
  50        NEW_PAD_CTRL(MX6_PAD_CSI0_DAT13__UART4_RX_DATA, UART4_PAD_CTRL),
  51        NEW_PAD_CTRL(MX6_PAD_CSI0_DAT12__UART4_TX_DATA, UART4_PAD_CTRL),
  52};
  53
  54static void setup_iomuxc_uart4(void)
  55{
  56        imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
  57}
  58
  59/* MMC */
  60#define USDHC2_PAD_CTRL (                       \
  61                PAD_CTL_HYS |                   \
  62                PAD_CTL_PUS_47K_UP |            \
  63                PAD_CTL_SPEED_LOW |             \
  64                PAD_CTL_DSE_80ohm |             \
  65                PAD_CTL_SRE_FAST                \
  66                )
  67
  68#define USDHC2_CLK_PAD_CTRL (                   \
  69                PAD_CTL_HYS |                   \
  70                PAD_CTL_PUS_47K_UP |            \
  71                PAD_CTL_SPEED_LOW |             \
  72                PAD_CTL_DSE_40ohm |             \
  73                PAD_CTL_SRE_FAST                \
  74                )
  75
  76static iomux_v3_cfg_t const usdhc2_pads[] = {
  77        NEW_PAD_CTRL(MX6_PAD_SD2_CLK__SD2_CLK, USDHC2_CLK_PAD_CTRL),
  78        NEW_PAD_CTRL(MX6_PAD_SD2_CMD__SD2_CMD, USDHC2_PAD_CTRL),
  79        NEW_PAD_CTRL(MX6_PAD_SD2_DAT0__SD2_DATA0, USDHC2_PAD_CTRL),
  80        NEW_PAD_CTRL(MX6_PAD_SD2_DAT1__SD2_DATA1, USDHC2_PAD_CTRL),
  81        NEW_PAD_CTRL(MX6_PAD_SD2_DAT2__SD2_DATA2, USDHC2_PAD_CTRL),
  82        NEW_PAD_CTRL(MX6_PAD_SD2_DAT3__SD2_DATA3, USDHC2_PAD_CTRL),
  83
  84        NEW_PAD_CTRL(MX6_PAD_GPIO_4__GPIO1_IO04, USDHC2_PAD_CTRL), /* CD */
  85        NEW_PAD_CTRL(MX6_PAD_GPIO_2__SD2_WP, USDHC2_PAD_CTRL), /* WP */
  86};
  87
  88#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
  89#define USDHC2_WP_GPIO IMX_GPIO_NR(1, 2)
  90
  91static struct fsl_esdhc_cfg usdhc2_cfg = {
  92        .esdhc_base = USDHC2_BASE_ADDR,
  93        .max_bus_width = 4,
  94};
  95
  96int tqma6_bb_board_mmc_getcd(struct mmc *mmc)
  97{
  98        struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
  99        int ret = 0;
 100
 101        if (cfg->esdhc_base == USDHC2_BASE_ADDR)
 102                ret = !gpio_get_value(USDHC2_CD_GPIO);
 103
 104        return ret;
 105}
 106
 107int tqma6_bb_board_mmc_getwp(struct mmc *mmc)
 108{
 109        struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 110        int ret = 0;
 111
 112        if (cfg->esdhc_base == USDHC2_BASE_ADDR)
 113                ret = gpio_get_value(USDHC2_WP_GPIO);
 114
 115        return ret;
 116}
 117
 118int tqma6_bb_board_mmc_init(bd_t *bis)
 119{
 120        int ret;
 121
 122        imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 123
 124        ret = gpio_request(USDHC2_CD_GPIO, "mmc-cd");
 125        if (!ret)
 126                gpio_direction_input(USDHC2_CD_GPIO);
 127        ret = gpio_request(USDHC2_WP_GPIO, "mmc-wp");
 128        if (!ret)
 129                gpio_direction_input(USDHC2_WP_GPIO);
 130
 131        usdhc2_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 132        if(fsl_esdhc_initialize(bis, &usdhc2_cfg))
 133                puts("WARNING: failed to initialize SD\n");
 134
 135        return 0;
 136}
 137
 138/* Ethernet */
 139#define ENET_PAD_CTRL (                         \
 140                PAD_CTL_HYS |                   \
 141                PAD_CTL_PUS_100K_UP |           \
 142                PAD_CTL_PUE |                   \
 143                PAD_CTL_PKE |                   \
 144                PAD_CTL_SPEED_MED |             \
 145                PAD_CTL_DSE_40ohm |             \
 146                PAD_CTL_SRE_SLOW                \
 147                )
 148
 149static iomux_v3_cfg_t const enet_pads[] = {
 150        NEW_PAD_CTRL(MX6_PAD_ENET_MDC__ENET_MDC, ENET_PAD_CTRL),
 151        NEW_PAD_CTRL(MX6_PAD_ENET_MDIO__ENET_MDIO, ENET_PAD_CTRL),
 152        NEW_PAD_CTRL(MX6_PAD_GPIO_16__ENET_REF_CLK, ENET_PAD_CTRL),
 153        NEW_PAD_CTRL(MX6_PAD_ENET_RXD0__ENET_RX_DATA0, ENET_PAD_CTRL),
 154        NEW_PAD_CTRL(MX6_PAD_ENET_RXD1__ENET_RX_DATA1, ENET_PAD_CTRL),
 155        NEW_PAD_CTRL(MX6_PAD_ENET_CRS_DV__ENET_RX_EN, ENET_PAD_CTRL),
 156        NEW_PAD_CTRL(MX6_PAD_ENET_RX_ER__ENET_RX_ER, ENET_PAD_CTRL),
 157        NEW_PAD_CTRL(MX6_PAD_ENET_TXD0__ENET_TX_DATA0, ENET_PAD_CTRL),
 158        NEW_PAD_CTRL(MX6_PAD_ENET_TXD1__ENET_TX_DATA1, ENET_PAD_CTRL),
 159        NEW_PAD_CTRL(MX6_PAD_ENET_TX_EN__ENET_TX_EN, ENET_PAD_CTRL),
 160        NEW_PAD_CTRL(MX6_PAD_GPIO_19__ENET_TX_ER, ENET_PAD_CTRL),
 161
 162        /* ENET1 reset */
 163        NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, ENET_PAD_CTRL),
 164        /* ENET1 interrupt */
 165        NEW_PAD_CTRL(MX6_PAD_GPIO_9__GPIO1_IO09, ENET_PAD_CTRL),
 166};
 167
 168#define ENET_PHY_RESET_GPIO IMX_GPIO_NR(1, 8)
 169
 170static void setup_iomuxc_enet(void)
 171{
 172        int ret;
 173
 174        imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
 175
 176        /* Reset LAN8720 PHY */
 177        ret = gpio_request(ENET_PHY_RESET_GPIO, "phy-reset");
 178        if (!ret)
 179                gpio_direction_output(ENET_PHY_RESET_GPIO , 0);
 180        udelay(25000);
 181        gpio_set_value(ENET_PHY_RESET_GPIO, 1);
 182}
 183
 184int board_eth_init(bd_t *bis)
 185{
 186        return cpu_eth_init(bis);
 187}
 188
 189/* GPIO */
 190#define GPIO_PAD_CTRL (                         \
 191                PAD_CTL_HYS |                   \
 192                PAD_CTL_PUS_100K_UP |           \
 193                PAD_CTL_PUE |                   \
 194                PAD_CTL_SPEED_MED |             \
 195                PAD_CTL_DSE_40ohm |             \
 196                PAD_CTL_SRE_SLOW                \
 197                )
 198
 199#define GPIO_OD_PAD_CTRL (                      \
 200                PAD_CTL_HYS |                   \
 201                PAD_CTL_PUS_100K_UP |           \
 202                PAD_CTL_PUE |                   \
 203                PAD_CTL_ODE |                   \
 204                PAD_CTL_SPEED_MED |             \
 205                PAD_CTL_DSE_40ohm |             \
 206                PAD_CTL_SRE_SLOW                \
 207                )
 208
 209static iomux_v3_cfg_t const gpio_pads[] = {
 210        /* USB_H_PWR */
 211        NEW_PAD_CTRL(MX6_PAD_GPIO_0__GPIO1_IO00, GPIO_PAD_CTRL),
 212        /* USB_OTG_PWR */
 213        NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, GPIO_PAD_CTRL),
 214        /* PCIE_RST */
 215        NEW_PAD_CTRL(MX6_PAD_NANDF_CLE__GPIO6_IO07, GPIO_OD_PAD_CTRL),
 216        /* UART1_PWRON */
 217        NEW_PAD_CTRL(MX6_PAD_DISP0_DAT14__GPIO5_IO08, GPIO_PAD_CTRL),
 218        /* UART2_PWRON */
 219        NEW_PAD_CTRL(MX6_PAD_DISP0_DAT16__GPIO5_IO10, GPIO_PAD_CTRL),
 220        /* UART3_PWRON */
 221        NEW_PAD_CTRL(MX6_PAD_DISP0_DAT18__GPIO5_IO12, GPIO_PAD_CTRL),
 222};
 223
 224#define GPIO_USB_H_PWR          IMX_GPIO_NR(1, 0)
 225#define GPIO_USB_OTG_PWR        IMX_GPIO_NR(3, 22)
 226#define GPIO_PCIE_RST           IMX_GPIO_NR(6, 7)
 227#define GPIO_UART1_PWRON        IMX_GPIO_NR(5, 8)
 228#define GPIO_UART2_PWRON        IMX_GPIO_NR(5, 10)
 229#define GPIO_UART3_PWRON        IMX_GPIO_NR(5, 12)
 230
 231static void gpio_init(void)
 232{
 233        int ret;
 234
 235        imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads));
 236
 237        ret = gpio_request(GPIO_USB_H_PWR, "usb-h-pwr");
 238        if (!ret)
 239                gpio_direction_output(GPIO_USB_H_PWR, 1);
 240        ret = gpio_request(GPIO_USB_OTG_PWR, "usb-otg-pwr");
 241        if (!ret)
 242                gpio_direction_output(GPIO_USB_OTG_PWR, 1);
 243        ret = gpio_request(GPIO_PCIE_RST, "pcie-reset");
 244        if (!ret)
 245                gpio_direction_output(GPIO_PCIE_RST, 1);
 246        ret = gpio_request(GPIO_UART1_PWRON, "uart1-pwr");
 247        if (!ret)
 248                gpio_direction_output(GPIO_UART1_PWRON, 0);
 249        ret = gpio_request(GPIO_UART2_PWRON, "uart2-pwr");
 250        if (!ret)
 251                gpio_direction_output(GPIO_UART2_PWRON, 0);
 252        ret = gpio_request(GPIO_UART3_PWRON, "uart3-pwr");
 253        if (!ret)
 254                gpio_direction_output(GPIO_UART3_PWRON, 0);
 255}
 256
 257void tqma6_iomuxc_spi(void)
 258{
 259        /* No SPI on this baseboard */
 260}
 261
 262int tqma6_bb_board_early_init_f(void)
 263{
 264        setup_iomuxc_uart4();
 265
 266        return 0;
 267}
 268
 269int tqma6_bb_board_init(void)
 270{
 271        setup_iomuxc_enet();
 272
 273        gpio_init();
 274
 275        /* Turn the UART-couplers on one-after-another */
 276        gpio_set_value(GPIO_UART1_PWRON, 1);
 277        mdelay(10);
 278        gpio_set_value(GPIO_UART2_PWRON, 1);
 279        mdelay(10);
 280        gpio_set_value(GPIO_UART3_PWRON, 1);
 281
 282        return 0;
 283}
 284
 285int tqma6_bb_board_late_init(void)
 286{
 287        return 0;
 288}
 289
 290const char *tqma6_bb_get_boardname(void)
 291{
 292        return "WRU-IV";
 293}
 294
 295static const struct boot_mode board_boot_modes[] = {
 296        /* 4 bit bus width */
 297        {"sd2",  MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 298        /* 8 bit bus width */
 299        {"emmc", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 300        { NULL, 0 },
 301};
 302
 303int misc_init_r(void)
 304{
 305        add_board_boot_modes(board_boot_modes);
 306
 307        return 0;
 308}
 309
 310#define WRU4_USB_H1_PWR         IMX_GPIO_NR(1, 0)
 311#define WRU4_USB_OTG_PWR        IMX_GPIO_NR(3, 22)
 312
 313int board_ehci_hcd_init(int port)
 314{
 315        int ret;
 316
 317        ret = gpio_request(WRU4_USB_H1_PWR, "usb-h1-pwr");
 318        if (!ret)
 319                gpio_direction_output(WRU4_USB_H1_PWR, 1);
 320
 321        ret = gpio_request(WRU4_USB_OTG_PWR, "usb-OTG-pwr");
 322        if (!ret)
 323                gpio_direction_output(WRU4_USB_OTG_PWR, 1);
 324
 325        return 0;
 326}
 327
 328int board_ehci_power(int port, int on)
 329{
 330        if (port)
 331                gpio_set_value(WRU4_USB_OTG_PWR, on);
 332        else
 333                gpio_set_value(WRU4_USB_H1_PWR, on);
 334
 335        return 0;
 336}
 337
 338/*
 339 * Device Tree Support
 340 */
 341#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
 342void tqma6_bb_ft_board_setup(void *blob, bd_t *bd)
 343{
 344        /* TBD */
 345}
 346#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
 347