xref: /openbmc/u-boot/board/pandora/pandora.c (revision 41fbbbbc)
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 	dieid_num_r();
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_GENERIC_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