board/isee/igep00x0/igep00x0.c

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