board/isee/igep00x0/igep00x0.c

   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 <env.h>
   8 #include <malloc.h>
   9 #include <net.h>
  10 #include <status_led.h>
  11 #include <dm.h>
  12 #include <ns16550.h>
  13 #include <twl4030.h>
  14 #include <netdev.h>
  15 #include <spl.h>
  16 #include <asm/gpio.h>
  17 #include <asm/io.h>
  18 #include <asm/arch/mem.h>
  19 #include <asm/arch/mmc_host_def.h>
  20 #include <asm/arch/mux.h>
  21 #include <asm/arch/sys_proto.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/rawnand.h>
  24 #include <linux/mtd/onenand.h>
  25 #include <jffs2/load_kernel.h>
  26 #include <mtd_node.h>
  27 #include <fdt_support.h>
  28 #include "igep00x0.h"
  29
  30 static const struct ns16550_platdata igep_serial = {
  31         .base = OMAP34XX_UART3,
  32         .reg_shift = 2,
  33         .clock = V_NS16550_CLK,
  34         .fcr = UART_FCR_DEFVAL,
  35 };
  36
  37 U_BOOT_DEVICE(igep_uart) = {
  38         "ns16550_serial",
  39         &igep_serial
  40 };
  41
  42 /*
  43  * Routine: get_board_revision
  44  * Description: GPIO_28 and GPIO_129 are used to read board and revision from
  45  * IGEP00x0 boards. First of all, it is necessary to reset USB transceiver from
  46  * IGEP0030 in order to read GPIO_IGEP00X0_BOARD_DETECTION correctly, because
  47  * this functionality is shared by USB HOST.
  48  * Once USB reset is applied, U-boot configures these pins as input pullup to
  49  * detect board and revision:
  50  * IGEP0020-RF = 0b00
  51  * IGEP0020-RC = 0b01
  52  * IGEP0030-RG = 0b10
  53  * IGEP0030-RE = 0b11
  54  */
  55 static int get_board_revision(void)
  56 {
  57         int revision;
  58
  59         gpio_request(IGEP0030_USB_TRANSCEIVER_RESET,
  60                                 "igep0030_usb_transceiver_reset");
  61         gpio_direction_output(IGEP0030_USB_TRANSCEIVER_RESET, 0);
  62
  63         gpio_request(GPIO_IGEP00X0_BOARD_DETECTION, "igep00x0_board_detection");
  64         gpio_direction_input(GPIO_IGEP00X0_BOARD_DETECTION);
  65         revision = 2 * gpio_get_value(GPIO_IGEP00X0_BOARD_DETECTION);
  66         gpio_free(GPIO_IGEP00X0_BOARD_DETECTION);
  67
  68         gpio_request(GPIO_IGEP00X0_REVISION_DETECTION,
  69                                 "igep00x0_revision_detection");
  70         gpio_direction_input(GPIO_IGEP00X0_REVISION_DETECTION);
  71         revision = revision + gpio_get_value(GPIO_IGEP00X0_REVISION_DETECTION);
  72         gpio_free(GPIO_IGEP00X0_REVISION_DETECTION);
  73
  74         gpio_free(IGEP0030_USB_TRANSCEIVER_RESET);
  75
  76         return revision;
  77 }
  78
  79 int onenand_board_init(struct mtd_info *mtd)
  80 {
  81         if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
  82                 struct onenand_chip *this = mtd->priv;
  83                 this->base = (void *)CONFIG_SYS_ONENAND_BASE;
  84                 return 0;
  85         }
  86         return 1;
  87 }
  88
  89 #if defined(CONFIG_CMD_NET)
  90 static void reset_net_chip(int gpio)
  91 {
  92         if (!gpio_request(gpio, "eth nrst")) {
  93                 gpio_direction_output(gpio, 1);
  94                 udelay(1);
  95                 gpio_set_value(gpio, 0);
  96                 udelay(40);
  97                 gpio_set_value(gpio, 1);
  98                 mdelay(10);
  99         }
 100 }
 101
 102 /*
 103  * Routine: setup_net_chip
 104  * Description: Setting up the configuration GPMC registers specific to the
 105  *              Ethernet hardware.
 106  */
 107 static void setup_net_chip(void)
 108 {
 109         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 110         static const u32 gpmc_lan_config[] = {
 111                 NET_LAN9221_GPMC_CONFIG1,
 112                 NET_LAN9221_GPMC_CONFIG2,
 113                 NET_LAN9221_GPMC_CONFIG3,
 114                 NET_LAN9221_GPMC_CONFIG4,
 115                 NET_LAN9221_GPMC_CONFIG5,
 116                 NET_LAN9221_GPMC_CONFIG6,
 117         };
 118
 119         enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 120                         CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
 121
 122         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 123         writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 124         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 125         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 126         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 127         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 128                 &ctrl_base->gpmc_nadv_ale);
 129
 130         reset_net_chip(64);
 131 }
 132
 133 int board_eth_init(bd_t *bis)
 134 {
 135 #ifdef CONFIG_SMC911X
 136         return smc911x_initialize(0, CONFIG_SMC911X_BASE);
 137 #else
 138         return 0;
 139 #endif
 140 }
 141 #else
 142 static inline void setup_net_chip(void) {}
 143 #endif
 144
 145 #ifdef CONFIG_OF_BOARD_SETUP
 146 static int ft_enable_by_compatible(void *blob, char *compat, int enable)
 147 {
 148         int off = fdt_node_offset_by_compatible(blob, -1, compat);
 149         if (off < 0)
 150                 return off;
 151
 152         if (enable)
 153                 fdt_status_okay(blob, off);
 154         else
 155                 fdt_status_disabled(blob, off);
 156
 157         return 0;
 158 }
 159
 160 int ft_board_setup(void *blob, bd_t *bd)
 161 {
 162 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 163         static const struct node_info nodes[] = {
 164                 { "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
 165                 { "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
 166         };
 167
 168         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 169 #endif
 170         ft_enable_by_compatible(blob, "ti,omap2-nand",
 171                                 gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
 172         ft_enable_by_compatible(blob, "ti,omap2-onenand",
 173                                 gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
 174
 175         return 0;
 176 }
 177 #endif
 178
 179 void set_led(void)
 180 {
 181         switch (get_board_revision()) {
 182         case 0:
 183         case 1:
 184                 gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
 185                 gpio_direction_output(IGEP0020_GPIO_LED, 1);
 186                 break;
 187         case 2:
 188         case 3:
 189                 gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
 190                 gpio_direction_output(IGEP0030_GPIO_LED, 0);
 191                 break;
 192         default:
 193                 /* Should not happen... */
 194                 break;
 195         }
 196 }
 197
 198 void set_boardname(void)
 199 {
 200         char rev[5] = { 'F','C','G','E', };
 201         int i = get_board_revision();
 202
 203         rev[i+1] = 0;
 204         env_set("board_rev", rev + i);
 205         env_set("board_name", i < 2 ? "igep0020" : "igep0030");
 206 }
 207
 208 /*
 209  * Routine: misc_init_r
 210  * Description: Configure board specific parts
 211  */
 212 int misc_init_r(void)
 213 {
 214         t2_t *t2_base = (t2_t *)T2_BASE;
 215         u32 pbias_lite;
 216
 217         twl4030_power_init();
 218
 219         /* set VSIM to 1.8V */
 220         twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
 221                                 TWL4030_PM_RECEIVER_VSIM_VSEL_18,
 222                                 TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
 223                                 TWL4030_PM_RECEIVER_DEV_GRP_P1);
 224
 225         /* set up dual-voltage GPIOs to 1.8V */
 226         pbias_lite = readl(&t2_base->pbias_lite);
 227         pbias_lite &= ~PBIASLITEVMODE1;
 228         pbias_lite |= PBIASLITEPWRDNZ1;
 229         writel(pbias_lite, &t2_base->pbias_lite);
 230         if (get_cpu_family() == CPU_OMAP36XX)
 231                 writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
 232                                          OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 233                                          OMAP34XX_CTRL_WKUP_CTRL);
 234
 235         setup_net_chip();
 236
 237         omap_die_id_display();
 238
 239         set_led();
 240
 241         set_boardname();
 242
 243         return 0;
 244 }
 245
 246 void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 247 {
 248         struct mtd_info *mtd = get_mtd_device(NULL, 0);
 249         if (mtd) {
 250                 static char ids[24];
 251                 static char parts[48];
 252                 const char *linux_name = "omap2-nand";
 253                 if (strncmp(mtd->name, "onenand0", 8) == 0)
 254                         linux_name = "omap2-onenand";
 255                 snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
 256                 snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
 257                          linux_name, 4 * mtd->erasesize >> 10);
 258                 *mtdids = ids;
 259                 *mtdparts = parts;
 260         }
 261 }