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
26 DECLARE_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 */
board_init(void)40 int 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
set_output_gpio(unsigned int gpio,int value)51 static 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 */
misc_init_r(void)69 int 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 */
set_muxconf_regs(void)115 void 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
board_mmc_init(bd_t * bis)124 int board_mmc_init(bd_t *bis)
125 {
126 return omap_mmc_init(0, 0, 0, -1, -1);
127 }
128
board_mmc_power_init(void)129 void board_mmc_power_init(void)
130 {
131 twl4030_power_mmc_init(0);
132 }
133 #endif
134