1 /* 2 * (C) Copyright 2008 3 * Grazvydas Ignotas <notasas@gmail.com> 4 * 5 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by 6 * Richard Woodruff <r-woodruff2@ti.com> 7 * Syed Mohammed Khasim <khasim@ti.com> 8 * Sunil Kumar <sunilsaini05@gmail.com> 9 * Shashi Ranjan <shashiranjanmca05@gmail.com> 10 * 11 * (C) Copyright 2004-2008 12 * Texas Instruments, <www.ti.com> 13 * 14 * SPDX-License-Identifier: GPL-2.0+ 15 */ 16 #include <common.h> 17 #include <twl4030.h> 18 #include <asm/io.h> 19 #include <asm/gpio.h> 20 #include <asm/arch/mmc_host_def.h> 21 #include <asm/arch/mux.h> 22 #include <asm/arch/gpio.h> 23 #include <asm/arch/sys_proto.h> 24 #include <asm/mach-types.h> 25 #include "pandora.h" 26 27 DECLARE_GLOBAL_DATA_PTR; 28 29 #define TWL4030_BB_CFG_BBCHEN (1 << 4) 30 #define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2) 31 #define TWL4030_BB_CFG_BBISEL_500UA 2 32 33 #define CONTROL_WKUP_CTRL 0x48002a5c 34 #define GPIO_IO_PWRDNZ (1 << 6) 35 #define PBIASLITEVMODE1 (1 << 8) 36 37 /* 38 * Routine: board_init 39 * Description: Early hardware init. 40 */ 41 int board_init(void) 42 { 43 gpmc_init(); /* in SRAM or SDRAM, finish GPMC */ 44 /* board id for Linux */ 45 gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA; 46 /* boot param addr */ 47 gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); 48 49 return 0; 50 } 51 52 static void set_output_gpio(unsigned int gpio, int value) 53 { 54 int ret; 55 56 ret = gpio_request(gpio, ""); 57 if (ret != 0) { 58 printf("could not request GPIO %u\n", gpio); 59 return; 60 } 61 ret = gpio_direction_output(gpio, value); 62 if (ret != 0) 63 printf("could not set GPIO %u to %d\n", gpio, value); 64 } 65 66 /* 67 * Routine: misc_init_r 68 * Description: Configure board specific parts 69 */ 70 int misc_init_r(void) 71 { 72 t2_t *t2_base = (t2_t *)T2_BASE; 73 u32 pbias_lite; 74 75 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON); 76 77 /* set up dual-voltage GPIOs to 1.8V */ 78 pbias_lite = readl(&t2_base->pbias_lite); 79 pbias_lite &= ~PBIASLITEVMODE1; 80 pbias_lite |= PBIASLITEPWRDNZ1; 81 writel(pbias_lite, &t2_base->pbias_lite); 82 if (get_cpu_family() == CPU_OMAP36XX) 83 writel(readl(CONTROL_WKUP_CTRL) | GPIO_IO_PWRDNZ, 84 CONTROL_WKUP_CTRL); 85 86 /* make sure audio and BT chips are in powerdown state */ 87 set_output_gpio(14, 0); 88 set_output_gpio(15, 0); 89 set_output_gpio(118, 0); 90 91 /* enable USB supply */ 92 set_output_gpio(164, 1); 93 94 /* wifi needs a short pulse to enter powersave state */ 95 set_output_gpio(23, 1); 96 udelay(5000); 97 gpio_direction_output(23, 0); 98 99 /* Enable battery backup capacitor (3.2V, 0.5mA charge current) */ 100 twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 101 TWL4030_PM_RECEIVER_BB_CFG, 102 TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV | 103 TWL4030_BB_CFG_BBISEL_500UA); 104 105 omap_die_id_display(); 106 107 return 0; 108 } 109 110 /* 111 * Routine: set_muxconf_regs 112 * Description: Setting up the configuration Mux registers specific to the 113 * hardware. Many pins need to be moved from protect to primary 114 * mode. 115 */ 116 void set_muxconf_regs(void) 117 { 118 MUX_PANDORA(); 119 if (get_cpu_family() == CPU_OMAP36XX) { 120 MUX_PANDORA_3730(); 121 } 122 } 123 124 #ifdef CONFIG_MMC 125 int board_mmc_init(bd_t *bis) 126 { 127 return omap_mmc_init(0, 0, 0, -1, -1); 128 } 129 130 void board_mmc_power_init(void) 131 { 132 twl4030_power_mmc_init(0); 133 } 134 #endif 135