uboot/board/isee/igep00x0/igep00x0.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2010
   4 * ISEE 2007 SL, <www.iseebcn.com>
   5 */
   6#include <common.h>
   7#include <status_led.h>
   8#include <dm.h>
   9#include <ns16550.h>
  10#include <twl4030.h>
  11#include <netdev.h>
  12#include <spl.h>
  13#include <asm/gpio.h>
  14#include <asm/io.h>
  15#include <asm/arch/mem.h>
  16#include <asm/arch/mmc_host_def.h>
  17#include <asm/arch/mux.h>
  18#include <asm/arch/sys_proto.h>
  19#include <linux/mtd/mtd.h>
  20#include <linux/mtd/rawnand.h>
  21#include <linux/mtd/onenand.h>
  22#include <jffs2/load_kernel.h>
  23#include <mtd_node.h>
  24#include <fdt_support.h>
  25#include "igep00x0.h"
  26
  27static const struct ns16550_platdata igep_serial = {
  28        .base = OMAP34XX_UART3,
  29        .reg_shift = 2,
  30        .clock = V_NS16550_CLK,
  31        .fcr = UART_FCR_DEFVAL,
  32};
  33
  34U_BOOT_DEVICE(igep_uart) = {
  35        "ns16550_serial",
  36        &igep_serial
  37};
  38
  39/*
  40 * Routine: get_board_revision
  41 * Description: GPIO_28 and GPIO_129 are used to read board and revision from
  42 * IGEP00x0 boards. First of all, it is necessary to reset USB transceiver from
  43 * IGEP0030 in order to read GPIO_IGEP00X0_BOARD_DETECTION correctly, because
  44 * this functionality is shared by USB HOST.
  45 * Once USB reset is applied, U-boot configures these pins as input pullup to
  46 * detect board and revision:
  47 * IGEP0020-RF = 0b00
  48 * IGEP0020-RC = 0b01
  49 * IGEP0030-RG = 0b10
  50 * IGEP0030-RE = 0b11
  51 */
  52static int get_board_revision(void)
  53{
  54        int revision;
  55
  56        gpio_request(IGEP0030_USB_TRANSCEIVER_RESET,
  57                                "igep0030_usb_transceiver_reset");
  58        gpio_direction_output(IGEP0030_USB_TRANSCEIVER_RESET, 0);
  59
  60        gpio_request(GPIO_IGEP00X0_BOARD_DETECTION, "igep00x0_board_detection");
  61        gpio_direction_input(GPIO_IGEP00X0_BOARD_DETECTION);
  62        revision = 2 * gpio_get_value(GPIO_IGEP00X0_BOARD_DETECTION);
  63        gpio_free(GPIO_IGEP00X0_BOARD_DETECTION);
  64
  65        gpio_request(GPIO_IGEP00X0_REVISION_DETECTION,
  66                                "igep00x0_revision_detection");
  67        gpio_direction_input(GPIO_IGEP00X0_REVISION_DETECTION);
  68        revision = revision + gpio_get_value(GPIO_IGEP00X0_REVISION_DETECTION);
  69        gpio_free(GPIO_IGEP00X0_REVISION_DETECTION);
  70
  71        gpio_free(IGEP0030_USB_TRANSCEIVER_RESET);
  72
  73        return revision;
  74}
  75
  76int onenand_board_init(struct mtd_info *mtd)
  77{
  78        if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
  79                struct onenand_chip *this = mtd->priv;
  80                this->base = (void *)CONFIG_SYS_ONENAND_BASE;
  81                return 0;
  82        }
  83        return 1;
  84}
  85
  86#if defined(CONFIG_CMD_NET)
  87static void reset_net_chip(int gpio)
  88{
  89        if (!gpio_request(gpio, "eth nrst")) {
  90                gpio_direction_output(gpio, 1);
  91                udelay(1);
  92                gpio_set_value(gpio, 0);
  93                udelay(40);
  94                gpio_set_value(gpio, 1);
  95                mdelay(10);
  96        }
  97}
  98
  99/*
 100 * Routine: setup_net_chip
 101 * Description: Setting up the configuration GPMC registers specific to the
 102 *              Ethernet hardware.
 103 */
 104static void setup_net_chip(void)
 105{
 106        struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 107        static const u32 gpmc_lan_config[] = {
 108                NET_LAN9221_GPMC_CONFIG1,
 109                NET_LAN9221_GPMC_CONFIG2,
 110                NET_LAN9221_GPMC_CONFIG3,
 111                NET_LAN9221_GPMC_CONFIG4,
 112                NET_LAN9221_GPMC_CONFIG5,
 113                NET_LAN9221_GPMC_CONFIG6,
 114        };
 115
 116        enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 117                        CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
 118
 119        /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 120        writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 121        /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 122        writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 123        /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 124        writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 125                &ctrl_base->gpmc_nadv_ale);
 126
 127        reset_net_chip(64);
 128}
 129
 130int board_eth_init(bd_t *bis)
 131{
 132#ifdef CONFIG_SMC911X
 133        return smc911x_initialize(0, CONFIG_SMC911X_BASE);
 134#else
 135        return 0;
 136#endif
 137}
 138#else
 139static inline void setup_net_chip(void) {}
 140#endif
 141
 142#ifdef CONFIG_OF_BOARD_SETUP
 143static int ft_enable_by_compatible(void *blob, char *compat, int enable)
 144{
 145        int off = fdt_node_offset_by_compatible(blob, -1, compat);
 146        if (off < 0)
 147                return off;
 148
 149        if (enable)
 150                fdt_status_okay(blob, off);
 151        else
 152                fdt_status_disabled(blob, off);
 153
 154        return 0;
 155}
 156
 157int ft_board_setup(void *blob, bd_t *bd)
 158{
 159#ifdef CONFIG_FDT_FIXUP_PARTITIONS
 160        static const struct node_info nodes[] = {
 161                { "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
 162                { "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
 163        };
 164
 165        fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 166#endif
 167        ft_enable_by_compatible(blob, "ti,omap2-nand",
 168                                gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
 169        ft_enable_by_compatible(blob, "ti,omap2-onenand",
 170                                gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
 171
 172        return 0;
 173}
 174#endif
 175
 176void set_led(void)
 177{
 178        switch (get_board_revision()) {
 179        case 0:
 180        case 1:
 181                gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
 182                gpio_direction_output(IGEP0020_GPIO_LED, 1);
 183                break;
 184        case 2:
 185        case 3:
 186                gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
 187                gpio_direction_output(IGEP0030_GPIO_LED, 0);
 188                break;
 189        default:
 190                /* Should not happen... */
 191                break;
 192        }
 193}
 194
 195void set_boardname(void)
 196{
 197        char rev[5] = { 'F','C','G','E', };
 198        int i = get_board_revision();
 199
 200        rev[i+1] = 0;
 201        env_set("board_rev", rev + i);
 202        env_set("board_name", i < 2 ? "igep0020" : "igep0030");
 203}
 204
 205/*
 206 * Routine: misc_init_r
 207 * Description: Configure board specific parts
 208 */
 209int misc_init_r(void)
 210{
 211        t2_t *t2_base = (t2_t *)T2_BASE;
 212        u32 pbias_lite;
 213
 214        twl4030_power_init();
 215
 216        /* set VSIM to 1.8V */
 217        twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
 218                                TWL4030_PM_RECEIVER_VSIM_VSEL_18,
 219                                TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
 220                                TWL4030_PM_RECEIVER_DEV_GRP_P1);
 221
 222        /* set up dual-voltage GPIOs to 1.8V */
 223        pbias_lite = readl(&t2_base->pbias_lite);
 224        pbias_lite &= ~PBIASLITEVMODE1;
 225        pbias_lite |= PBIASLITEPWRDNZ1;
 226        writel(pbias_lite, &t2_base->pbias_lite);
 227        if (get_cpu_family() == CPU_OMAP36XX)
 228                writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
 229                                         OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 230                                         OMAP34XX_CTRL_WKUP_CTRL);
 231
 232        setup_net_chip();
 233
 234        omap_die_id_display();
 235
 236        set_led();
 237
 238        set_boardname();
 239
 240        return 0;
 241}
 242
 243void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 244{
 245        struct mtd_info *mtd = get_mtd_device(NULL, 0);
 246        if (mtd) {
 247                static char ids[24];
 248                static char parts[48];
 249                const char *linux_name = "omap2-nand";
 250                if (strncmp(mtd->name, "onenand0", 8) == 0)
 251                        linux_name = "omap2-onenand";
 252                snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
 253                snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
 254                         linux_name, 4 * mtd->erasesize >> 10);
 255                *mtdids = ids;
 256                *mtdparts = parts;
 257        }
 258}
 259