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 <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
  27 static 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
  34 U_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  */
  52 static 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
  76 int 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)
  87 static 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  */
 104 static 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
 130 int 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
 139 static inline void setup_net_chip(void) {}
 140 #endif
 141
 142 #ifdef CONFIG_OF_BOARD_SETUP
 143 static 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
 157 int 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
 176 void 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
 195 void 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  */
 209 int 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
 243 void 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 }