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/delay.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/rawnand.h>
  26 #include <linux/mtd/onenand.h>
  27 #include <jffs2/load_kernel.h>
  28 #include <mtd_node.h>
  29 #include <fdt_support.h>
  30 #include "igep00x0.h"
  31
  32 static const struct ns16550_platdata igep_serial = {
  33         .base = OMAP34XX_UART3,
  34         .reg_shift = 2,
  35         .clock = V_NS16550_CLK,
  36         .fcr = UART_FCR_DEFVAL,
  37 };
  38
  39 U_BOOT_DEVICE(igep_uart) = {
  40         "ns16550_serial",
  41         &igep_serial
  42 };
  43
  44 /*
  45  * Routine: get_board_revision
  46  * Description: GPIO_28 and GPIO_129 are used to read board and revision from
  47  * IGEP00x0 boards. First of all, it is necessary to reset USB transceiver from
  48  * IGEP0030 in order to read GPIO_IGEP00X0_BOARD_DETECTION correctly, because
  49  * this functionality is shared by USB HOST.
  50  * Once USB reset is applied, U-boot configures these pins as input pullup to
  51  * detect board and revision:
  52  * IGEP0020-RF = 0b00
  53  * IGEP0020-RC = 0b01
  54  * IGEP0030-RG = 0b10
  55  * IGEP0030-RE = 0b11
  56  */
  57 static int get_board_revision(void)
  58 {
  59         int revision;
  60
  61         gpio_request(IGEP0030_USB_TRANSCEIVER_RESET,
  62                                 "igep0030_usb_transceiver_reset");
  63         gpio_direction_output(IGEP0030_USB_TRANSCEIVER_RESET, 0);
  64
  65         gpio_request(GPIO_IGEP00X0_BOARD_DETECTION, "igep00x0_board_detection");
  66         gpio_direction_input(GPIO_IGEP00X0_BOARD_DETECTION);
  67         revision = 2 * gpio_get_value(GPIO_IGEP00X0_BOARD_DETECTION);
  68         gpio_free(GPIO_IGEP00X0_BOARD_DETECTION);
  69
  70         gpio_request(GPIO_IGEP00X0_REVISION_DETECTION,
  71                                 "igep00x0_revision_detection");
  72         gpio_direction_input(GPIO_IGEP00X0_REVISION_DETECTION);
  73         revision = revision + gpio_get_value(GPIO_IGEP00X0_REVISION_DETECTION);
  74         gpio_free(GPIO_IGEP00X0_REVISION_DETECTION);
  75
  76         gpio_free(IGEP0030_USB_TRANSCEIVER_RESET);
  77
  78         return revision;
  79 }
  80
  81 int onenand_board_init(struct mtd_info *mtd)
  82 {
  83         if (gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND) {
  84                 struct onenand_chip *this = mtd->priv;
  85                 this->base = (void *)CONFIG_SYS_ONENAND_BASE;
  86                 return 0;
  87         }
  88         return 1;
  89 }
  90
  91 #if defined(CONFIG_CMD_NET)
  92 static void reset_net_chip(int gpio)
  93 {
  94         if (!gpio_request(gpio, "eth nrst")) {
  95                 gpio_direction_output(gpio, 1);
  96                 udelay(1);
  97                 gpio_set_value(gpio, 0);
  98                 udelay(40);
  99                 gpio_set_value(gpio, 1);
 100                 mdelay(10);
 101         }
 102 }
 103
 104 /*
 105  * Routine: setup_net_chip
 106  * Description: Setting up the configuration GPMC registers specific to the
 107  *              Ethernet hardware.
 108  */
 109 static void setup_net_chip(void)
 110 {
 111         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 112         static const u32 gpmc_lan_config[] = {
 113                 NET_LAN9221_GPMC_CONFIG1,
 114                 NET_LAN9221_GPMC_CONFIG2,
 115                 NET_LAN9221_GPMC_CONFIG3,
 116                 NET_LAN9221_GPMC_CONFIG4,
 117                 NET_LAN9221_GPMC_CONFIG5,
 118                 NET_LAN9221_GPMC_CONFIG6,
 119         };
 120
 121         enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 122                         CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
 123
 124         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 125         writew(readw(&ctrl_base->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 126         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 127         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 128         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 129         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 130                 &ctrl_base->gpmc_nadv_ale);
 131
 132         reset_net_chip(64);
 133 }
 134
 135 int board_eth_init(bd_t *bis)
 136 {
 137 #ifdef CONFIG_SMC911X
 138         return smc911x_initialize(0, CONFIG_SMC911X_BASE);
 139 #else
 140         return 0;
 141 #endif
 142 }
 143 #else
 144 static inline void setup_net_chip(void) {}
 145 #endif
 146
 147 #ifdef CONFIG_OF_BOARD_SETUP
 148 static int ft_enable_by_compatible(void *blob, char *compat, int enable)
 149 {
 150         int off = fdt_node_offset_by_compatible(blob, -1, compat);
 151         if (off < 0)
 152                 return off;
 153
 154         if (enable)
 155                 fdt_status_okay(blob, off);
 156         else
 157                 fdt_status_disabled(blob, off);
 158
 159         return 0;
 160 }
 161
 162 int ft_board_setup(void *blob, bd_t *bd)
 163 {
 164 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 165         static const struct node_info nodes[] = {
 166                 { "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
 167                 { "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
 168         };
 169
 170         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 171 #endif
 172         ft_enable_by_compatible(blob, "ti,omap2-nand",
 173                                 gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
 174         ft_enable_by_compatible(blob, "ti,omap2-onenand",
 175                                 gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
 176
 177         return 0;
 178 }
 179 #endif
 180
 181 void set_led(void)
 182 {
 183         switch (get_board_revision()) {
 184         case 0:
 185         case 1:
 186                 gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
 187                 gpio_direction_output(IGEP0020_GPIO_LED, 1);
 188                 break;
 189         case 2:
 190         case 3:
 191                 gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
 192                 gpio_direction_output(IGEP0030_GPIO_LED, 0);
 193                 break;
 194         default:
 195                 /* Should not happen... */
 196                 break;
 197         }
 198 }
 199
 200 void set_boardname(void)
 201 {
 202         char rev[5] = { 'F','C','G','E', };
 203         int i = get_board_revision();
 204
 205         rev[i+1] = 0;
 206         env_set("board_rev", rev + i);
 207         env_set("board_name", i < 2 ? "igep0020" : "igep0030");
 208 }
 209
 210 /*
 211  * Routine: misc_init_r
 212  * Description: Configure board specific parts
 213  */
 214 int misc_init_r(void)
 215 {
 216         t2_t *t2_base = (t2_t *)T2_BASE;
 217         u32 pbias_lite;
 218
 219         twl4030_power_init();
 220
 221         /* set VSIM to 1.8V */
 222         twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
 223                                 TWL4030_PM_RECEIVER_VSIM_VSEL_18,
 224                                 TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
 225                                 TWL4030_PM_RECEIVER_DEV_GRP_P1);
 226
 227         /* set up dual-voltage GPIOs to 1.8V */
 228         pbias_lite = readl(&t2_base->pbias_lite);
 229         pbias_lite &= ~PBIASLITEVMODE1;
 230         pbias_lite |= PBIASLITEPWRDNZ1;
 231         writel(pbias_lite, &t2_base->pbias_lite);
 232         if (get_cpu_family() == CPU_OMAP36XX)
 233                 writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
 234                                          OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 235                                          OMAP34XX_CTRL_WKUP_CTRL);
 236
 237         setup_net_chip();
 238
 239         omap_die_id_display();
 240
 241         set_led();
 242
 243         set_boardname();
 244
 245         return 0;
 246 }
 247
 248 void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 249 {
 250         struct mtd_info *mtd = get_mtd_device(NULL, 0);
 251         if (mtd) {
 252                 static char ids[24];
 253                 static char parts[48];
 254                 const char *linux_name = "omap2-nand";
 255                 if (strncmp(mtd->name, "onenand0", 8) == 0)
 256                         linux_name = "omap2-onenand";
 257                 snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
 258                 snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
 259                          linux_name, 4 * mtd->erasesize >> 10);
 260                 *mtdids = ids;
 261                 *mtdparts = parts;
 262         }
 263 }