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 <init.h>
   9 #include <malloc.h>
  10 #include <net.h>
  11 #include <status_led.h>
  12 #include <dm.h>
  13 #include <ns16550.h>
  14 #include <twl4030.h>
  15 #include <netdev.h>
  16 #include <spl.h>
  17 #include <asm/gpio.h>
  18 #include <asm/io.h>
  19 #include <asm/arch/mem.h>
  20 #include <asm/arch/mmc_host_def.h>
  21 #include <asm/arch/mux.h>
  22 #include <asm/arch/sys_proto.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/rawnand.h>
  25 #include <linux/mtd/onenand.h>
  26 #include <jffs2/load_kernel.h>
  27 #include <mtd_node.h>
  28 #include <fdt_support.h>
  29 #include "igep00x0.h"
  30
  31 static const struct ns16550_platdata igep_serial = {
  32         .base = OMAP34XX_UART3,
  33         .reg_shift = 2,
  34         .clock = V_NS16550_CLK,
  35         .fcr = UART_FCR_DEFVAL,
  36 };
  37
  38 U_BOOT_DEVICE(igep_uart) = {
  39         "ns16550_serial",
  40         &igep_serial
  41 };
  42
  43 /*
  44  * Routine: get_board_revision
  45  * Description: GPIO_28 and GPIO_129 are used to read board and revision from
  46  * IGEP00x0 boards. First of all, it is necessary to reset USB transceiver from
  47  * IGEP0030 in order to read GPIO_IGEP00X0_BOARD_DETECTION correctly, because
  48  * this functionality is shared by USB HOST.
  49  * Once USB reset is applied, U-boot configures these pins as input pullup to
  50  * detect board and revision:
  51  * IGEP0020-RF = 0b00
  52  * IGEP0020-RC = 0b01
  53  * IGEP0030-RG = 0b10
  54  * IGEP0030-RE = 0b11
  55  */
  56 static int get_board_revision(void)
  57 {
  58         int revision;
  59
  60         gpio_request(IGEP0030_USB_TRANSCEIVER_RESET,
  61                                 "igep0030_usb_transceiver_reset");
  62         gpio_direction_output(IGEP0030_USB_TRANSCEIVER_RESET, 0);
  63
  64         gpio_request(GPIO_IGEP00X0_BOARD_DETECTION, "igep00x0_board_detection");
  65         gpio_direction_input(GPIO_IGEP00X0_BOARD_DETECTION);
  66         revision = 2 * gpio_get_value(GPIO_IGEP00X0_BOARD_DETECTION);
  67         gpio_free(GPIO_IGEP00X0_BOARD_DETECTION);
  68
  69         gpio_request(GPIO_IGEP00X0_REVISION_DETECTION,
  70                                 "igep00x0_revision_detection");
  71         gpio_direction_input(GPIO_IGEP00X0_REVISION_DETECTION);
  72         revision = revision + gpio_get_value(GPIO_IGEP00X0_REVISION_DETECTION);
  73         gpio_free(GPIO_IGEP00X0_REVISION_DETECTION);
  74
  75         gpio_free(IGEP0030_USB_TRANSCEIVER_RESET);
  76
  77         return revision;
  78 }
  79
  80 int onenand_board_init(struct mtd_info *mtd)
  81 {
  82         if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
  83                 struct onenand_chip *this = mtd->priv;
  84                 this->base = (void *)CONFIG_SYS_ONENAND_BASE;
  85                 return 0;
  86         }
  87         return 1;
  88 }
  89
  90 #if defined(CONFIG_CMD_NET)
  91 static void reset_net_chip(int gpio)
  92 {
  93         if (!gpio_request(gpio, "eth nrst")) {
  94                 gpio_direction_output(gpio, 1);
  95                 udelay(1);
  96                 gpio_set_value(gpio, 0);
  97                 udelay(40);
  98                 gpio_set_value(gpio, 1);
  99                 mdelay(10);
 100         }
 101 }
 102
 103 /*
 104  * Routine: setup_net_chip
 105  * Description: Setting up the configuration GPMC registers specific to the
 106  *              Ethernet hardware.
 107  */
 108 static void setup_net_chip(void)
 109 {
 110         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 111         static const u32 gpmc_lan_config[] = {
 112                 NET_LAN9221_GPMC_CONFIG1,
 113                 NET_LAN9221_GPMC_CONFIG2,
 114                 NET_LAN9221_GPMC_CONFIG3,
 115                 NET_LAN9221_GPMC_CONFIG4,
 116                 NET_LAN9221_GPMC_CONFIG5,
 117                 NET_LAN9221_GPMC_CONFIG6,
 118         };
 119
 120         enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 121                         CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
 122
 123         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 124         writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 125         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 126         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 127         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 128         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 129                 &ctrl_base->gpmc_nadv_ale);
 130
 131         reset_net_chip(64);
 132 }
 133
 134 int board_eth_init(bd_t *bis)
 135 {
 136 #ifdef CONFIG_SMC911X
 137         return smc911x_initialize(0, CONFIG_SMC911X_BASE);
 138 #else
 139         return 0;
 140 #endif
 141 }
 142 #else
 143 static inline void setup_net_chip(void) {}
 144 #endif
 145
 146 #ifdef CONFIG_OF_BOARD_SETUP
 147 static int ft_enable_by_compatible(void *blob, char *compat, int enable)
 148 {
 149         int off = fdt_node_offset_by_compatible(blob, -1, compat);
 150         if (off < 0)
 151                 return off;
 152
 153         if (enable)
 154                 fdt_status_okay(blob, off);
 155         else
 156                 fdt_status_disabled(blob, off);
 157
 158         return 0;
 159 }
 160
 161 int ft_board_setup(void *blob, bd_t *bd)
 162 {
 163 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 164         static const struct node_info nodes[] = {
 165                 { "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
 166                 { "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
 167         };
 168
 169         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 170 #endif
 171         ft_enable_by_compatible(blob, "ti,omap2-nand",
 172                                 gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
 173         ft_enable_by_compatible(blob, "ti,omap2-onenand",
 174                                 gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
 175
 176         return 0;
 177 }
 178 #endif
 179
 180 void set_led(void)
 181 {
 182         switch (get_board_revision()) {
 183         case 0:
 184         case 1:
 185                 gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
 186                 gpio_direction_output(IGEP0020_GPIO_LED, 1);
 187                 break;
 188         case 2:
 189         case 3:
 190                 gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
 191                 gpio_direction_output(IGEP0030_GPIO_LED, 0);
 192                 break;
 193         default:
 194                 /* Should not happen... */
 195                 break;
 196         }
 197 }
 198
 199 void set_boardname(void)
 200 {
 201         char rev[5] = { 'F','C','G','E', };
 202         int i = get_board_revision();
 203
 204         rev[i+1] = 0;
 205         env_set("board_rev", rev + i);
 206         env_set("board_name", i < 2 ? "igep0020" : "igep0030");
 207 }
 208
 209 /*
 210  * Routine: misc_init_r
 211  * Description: Configure board specific parts
 212  */
 213 int misc_init_r(void)
 214 {
 215         t2_t *t2_base = (t2_t *)T2_BASE;
 216         u32 pbias_lite;
 217
 218         twl4030_power_init();
 219
 220         /* set VSIM to 1.8V */
 221         twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
 222                                 TWL4030_PM_RECEIVER_VSIM_VSEL_18,
 223                                 TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
 224                                 TWL4030_PM_RECEIVER_DEV_GRP_P1);
 225
 226         /* set up dual-voltage GPIOs to 1.8V */
 227         pbias_lite = readl(&t2_base->pbias_lite);
 228         pbias_lite &= ~PBIASLITEVMODE1;
 229         pbias_lite |= PBIASLITEPWRDNZ1;
 230         writel(pbias_lite, &t2_base->pbias_lite);
 231         if (get_cpu_family() == CPU_OMAP36XX)
 232                 writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
 233                                          OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 234                                          OMAP34XX_CTRL_WKUP_CTRL);
 235
 236         setup_net_chip();
 237
 238         omap_die_id_display();
 239
 240         set_led();
 241
 242         set_boardname();
 243
 244         return 0;
 245 }
 246
 247 void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 248 {
 249         struct mtd_info *mtd = get_mtd_device(NULL, 0);
 250         if (mtd) {
 251                 static char ids[24];
 252                 static char parts[48];
 253                 const char *linux_name = "omap2-nand";
 254                 if (strncmp(mtd->name, "onenand0", 8) == 0)
 255                         linux_name = "omap2-onenand";
 256                 snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
 257                 snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
 258                          linux_name, 4 * mtd->erasesize >> 10);
 259                 *mtdids = ids;
 260                 *mtdparts = parts;
 261         }
 262 }