LXR uboot/board/pandora/pandora.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2008
   4 * Grazvydas Ignotas <notasas@gmail.com>
   5 *
   6 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   7 *      Richard Woodruff <r-woodruff2@ti.com>
   8 *      Syed Mohammed Khasim <khasim@ti.com>
   9 *      Sunil Kumar <sunilsaini05@gmail.com>
  10 *      Shashi Ranjan <shashiranjanmca05@gmail.com>
  11 *
  12 * (C) Copyright 2004-2008
  13 * Texas Instruments, <www.ti.com>
  14 */
  15#include <common.h>
  16#include <twl4030.h>
  17#include <asm/io.h>
  18#include <asm/gpio.h>
  19#include <asm/arch/mmc_host_def.h>
  20#include <asm/arch/mux.h>
  21#include <asm/arch/gpio.h>
  22#include <asm/arch/sys_proto.h>
  23#include <asm/mach-types.h>
  24#include "pandora.h"
  25
  26DECLARE_GLOBAL_DATA_PTR;
  27
  28#define TWL4030_BB_CFG_BBCHEN           (1 << 4)
  29#define TWL4030_BB_CFG_BBSEL_3200MV     (3 << 2)
  30#define TWL4030_BB_CFG_BBISEL_500UA     2
  31
  32#define CONTROL_WKUP_CTRL               0x48002a5c
  33#define GPIO_IO_PWRDNZ                  (1 << 6)
  34#define PBIASLITEVMODE1                 (1 << 8)
  35
  36/*
  37 * Routine: board_init
  38 * Description: Early hardware init.
  39 */
  40int board_init(void)
  41{
  42        gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  43        /* board id for Linux */
  44        gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA;
  45        /* boot param addr */
  46        gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  47
  48        return 0;
  49}
  50
  51static void set_output_gpio(unsigned int gpio, int value)
  52{
  53        int ret;
  54
  55        ret = gpio_request(gpio, "");
  56        if (ret != 0) {
  57                printf("could not request GPIO %u\n", gpio);
  58                return;
  59        }
  60        ret = gpio_direction_output(gpio, value);
  61        if (ret != 0)
  62                printf("could not set GPIO %u to %d\n", gpio, value);
  63}
  64
  65/*
  66 * Routine: misc_init_r
  67 * Description: Configure board specific parts
  68 */
  69int misc_init_r(void)
  70{
  71        t2_t *t2_base = (t2_t *)T2_BASE;
  72        u32 pbias_lite;
  73
  74        twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
  75
  76        /* set up dual-voltage GPIOs to 1.8V */
  77        pbias_lite = readl(&t2_base->pbias_lite);
  78        pbias_lite &= ~PBIASLITEVMODE1;
  79        pbias_lite |= PBIASLITEPWRDNZ1;
  80        writel(pbias_lite, &t2_base->pbias_lite);
  81        if (get_cpu_family() == CPU_OMAP36XX)
  82                writel(readl(CONTROL_WKUP_CTRL) | GPIO_IO_PWRDNZ,
  83                        CONTROL_WKUP_CTRL);
  84
  85        /* make sure audio and BT chips are in powerdown state */
  86        set_output_gpio(14, 0);
  87        set_output_gpio(15, 0);
  88        set_output_gpio(118, 0);
  89
  90        /* enable USB supply */
  91        set_output_gpio(164, 1);
  92
  93        /* wifi needs a short pulse to enter powersave state */
  94        set_output_gpio(23, 1);
  95        udelay(5000);
  96        gpio_direction_output(23, 0);
  97
  98        /* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
  99        twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
 100                TWL4030_PM_RECEIVER_BB_CFG,
 101                TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
 102                TWL4030_BB_CFG_BBISEL_500UA);
 103
 104        omap_die_id_display();
 105
 106        return 0;
 107}
 108
 109/*
 110 * Routine: set_muxconf_regs
 111 * Description: Setting up the configuration Mux registers specific to the
 112 *              hardware. Many pins need to be moved from protect to primary
 113 *              mode.
 114 */
 115void set_muxconf_regs(void)
 116{
 117        MUX_PANDORA();
 118        if (get_cpu_family() == CPU_OMAP36XX) {
 119                MUX_PANDORA_3730();
 120        }
 121}
 122
 123#ifdef CONFIG_MMC
 124int board_mmc_init(bd_t *bis)
 125{
 126        return omap_mmc_init(0, 0, 0, -1, -1);
 127}
 128
 129void board_mmc_power_init(void)
 130{
 131        twl4030_power_mmc_init(0);
 132}
 133#endif
 134