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_plat 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_DRVINFO(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 *)CFG_SYS_ONENAND_BASE;
  86                 return 0;
  87         }
  88         return 1;
  89 }
  90
  91 #ifdef CONFIG_OF_BOARD_SETUP
  92 static int ft_enable_by_compatible(void *blob, char *compat, int enable)
  93 {
  94         int off = fdt_node_offset_by_compatible(blob, -1, compat);
  95         if (off < 0)
  96                 return off;
  97
  98         if (enable)
  99                 fdt_status_okay(blob, off);
 100         else
 101                 fdt_status_disabled(blob, off);
 102
 103         return 0;
 104 }
 105
 106 int ft_board_setup(void *blob, struct bd_info *bd)
 107 {
 108 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 109         static const struct node_info nodes[] = {
 110                 { "ti,omap2-nand", MTD_DEV_TYPE_NAND, },
 111                 { "ti,omap2-onenand", MTD_DEV_TYPE_ONENAND, },
 112         };
 113
 114         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 115 #endif
 116         ft_enable_by_compatible(blob, "ti,omap2-nand",
 117                                 gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
 118         ft_enable_by_compatible(blob, "ti,omap2-onenand",
 119                                 gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
 120
 121         return 0;
 122 }
 123 #endif
 124
 125 void set_led(void)
 126 {
 127         switch (get_board_revision()) {
 128         case 0:
 129         case 1:
 130                 gpio_request(IGEP0020_GPIO_LED, "igep0020_gpio_led");
 131                 gpio_direction_output(IGEP0020_GPIO_LED, 1);
 132                 break;
 133         case 2:
 134         case 3:
 135                 gpio_request(IGEP0030_GPIO_LED, "igep0030_gpio_led");
 136                 gpio_direction_output(IGEP0030_GPIO_LED, 0);
 137                 break;
 138         default:
 139                 /* Should not happen... */
 140                 break;
 141         }
 142 }
 143
 144 void set_boardname(void)
 145 {
 146         char rev[5] = { 'F','C','G','E', };
 147         int i = get_board_revision();
 148
 149         rev[i+1] = 0;
 150         env_set("board_rev", rev + i);
 151         env_set("board_name", i < 2 ? "igep0020" : "igep0030");
 152 }
 153
 154 /*
 155  * Routine: misc_init_r
 156  * Description: Configure board specific parts
 157  */
 158 int misc_init_r(void)
 159 {
 160         t2_t *t2_base = (t2_t *)T2_BASE;
 161         u32 pbias_lite;
 162
 163         twl4030_power_init();
 164
 165         /* set VSIM to 1.8V */
 166         twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED,
 167                                 TWL4030_PM_RECEIVER_VSIM_VSEL_18,
 168                                 TWL4030_PM_RECEIVER_VSIM_DEV_GRP,
 169                                 TWL4030_PM_RECEIVER_DEV_GRP_P1);
 170
 171         /* set up dual-voltage GPIOs to 1.8V */
 172         pbias_lite = readl(&t2_base->pbias_lite);
 173         pbias_lite &= ~PBIASLITEVMODE1;
 174         pbias_lite |= PBIASLITEPWRDNZ1;
 175         writel(pbias_lite, &t2_base->pbias_lite);
 176         if (get_cpu_family() == CPU_OMAP36XX)
 177                 writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
 178                                          OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
 179                                          OMAP34XX_CTRL_WKUP_CTRL);
 180
 181         omap_die_id_display();
 182
 183         set_led();
 184
 185         set_boardname();
 186
 187         return 0;
 188 }
 189
 190 void board_mtdparts_default(const char **mtdids, const char **mtdparts)
 191 {
 192         struct mtd_info *mtd = get_mtd_device(NULL, 0);
 193         if (mtd) {
 194                 static char ids[24];
 195                 static char parts[48];
 196                 const char *linux_name = "omap2-nand";
 197                 if (strncmp(mtd->name, "onenand0", 8) == 0)
 198                         linux_name = "omap2-onenand";
 199                 snprintf(ids, sizeof(ids), "%s=%s", mtd->name, linux_name);
 200                 snprintf(parts, sizeof(parts), "mtdparts=%s:%dk(SPL),-(UBI)",
 201                          linux_name, 4 * mtd->erasesize >> 10);
 202                 *mtdids = ids;
 203                 *mtdparts = parts;
 204         }
 205 }