xref: /openbmc/u-boot/board/amazon/kc1/kc1.c (revision 9d466f2f)
1 /*
2  * Amazon Kindle Fire (first generation) codename kc1 config
3  *
4  * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <config.h>
10 #include <common.h>
11 #include <linux/ctype.h>
12 #include <linux/usb/musb.h>
13 #include <asm/omap_musb.h>
14 #include <asm/arch/sys_proto.h>
15 #include <asm/arch/mmc_host_def.h>
16 #include <asm/gpio.h>
17 #include <asm/emif.h>
18 #include <twl6030.h>
19 #include "kc1.h"
20 #include <asm/mach-types.h>
21 
22 DECLARE_GLOBAL_DATA_PTR;
23 
24 const struct omap_sysinfo sysinfo = {
25 	.board_string = "kc1"
26 };
27 
28 static struct musb_hdrc_config musb_config = {
29 	.multipoint = 1,
30 	.dyn_fifo = 1,
31 	.num_eps = 16,
32 	.ram_bits = 12
33 };
34 
35 static struct omap_musb_board_data musb_board_data = {
36 	.interface_type	= MUSB_INTERFACE_UTMI,
37 };
38 
39 static struct musb_hdrc_platform_data musb_platform_data = {
40 	.mode = MUSB_PERIPHERAL,
41 	.config = &musb_config,
42 	.power = 100,
43 	.platform_ops = &omap2430_ops,
44 	.board_data = &musb_board_data,
45 };
46 
47 
48 void set_muxconf_regs(void)
49 {
50 	do_set_mux((*ctrl)->control_padconf_core_base, core_padconf_array,
51 		sizeof(core_padconf_array) / sizeof(struct pad_conf_entry));
52 }
53 
54 struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
55 	struct lpddr2_device_details *lpddr2_dev_details)
56 {
57 	if (cs == CS1)
58 		return NULL;
59 
60 	*lpddr2_dev_details = elpida_2G_S4_details;
61 
62 	return lpddr2_dev_details;
63 }
64 
65 void emif_get_device_timings(u32 emif_nr,
66 	const struct lpddr2_device_timings **cs0_device_timings,
67 	const struct lpddr2_device_timings **cs1_device_timings)
68 {
69 	*cs0_device_timings = &elpida_2G_S4_timings;
70 	*cs1_device_timings = NULL;
71 }
72 
73 int board_init(void)
74 {
75 	/* GPMC init */
76 	gpmc_init();
77 
78 	/* MACH number */
79 	gd->bd->bi_arch_number = MACH_TYPE_OMAP_4430SDP;
80 
81 	/* ATAGs location */
82 	gd->bd->bi_boot_params = OMAP44XX_DRAM_ADDR_SPACE_START + 0x100;
83 
84 	return 0;
85 }
86 
87 int misc_init_r(void)
88 {
89 	char reboot_mode[2] = { 0 };
90 	u32 data = 0;
91 	u32 value;
92 	int rc;
93 
94 	/* Reboot mode */
95 
96 	rc = omap_reboot_mode(reboot_mode, sizeof(reboot_mode));
97 
98 	/* USB ID pin pull-up indicates factory (fastboot) cable detection. */
99 	gpio_request(KC1_GPIO_USB_ID, "USB_ID");
100 	gpio_direction_input(KC1_GPIO_USB_ID);
101 	value = gpio_get_value(KC1_GPIO_USB_ID);
102 
103 	if (value)
104 		reboot_mode[0] = 'b';
105 
106 	if (rc < 0 || reboot_mode[0] == 'o') {
107 		/*
108 		 * When not rebooting, valid power on reasons are either the
109 		 * power button, charger plug or USB plug.
110 		 */
111 
112 		data |= twl6030_input_power_button();
113 		data |= twl6030_input_charger();
114 		data |= twl6030_input_usb();
115 
116 		if (!data)
117 			twl6030_power_off();
118 	}
119 
120 	if (reboot_mode[0] > 0 && isascii(reboot_mode[0])) {
121 		if (!env_get("reboot-mode"))
122 			env_set("reboot-mode", (char *)reboot_mode);
123 	}
124 
125 	omap_reboot_mode_clear();
126 
127 	/* Serial number */
128 
129 	omap_die_id_serial();
130 
131 	/* MUSB */
132 
133 	musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
134 
135 	return 0;
136 }
137 
138 u32 get_board_rev(void)
139 {
140 	u32 value = 0;
141 
142 	gpio_request(KC1_GPIO_MBID0, "MBID0");
143 	gpio_request(KC1_GPIO_MBID1, "MBID1");
144 	gpio_request(KC1_GPIO_MBID2, "MBID2");
145 	gpio_request(KC1_GPIO_MBID3, "MBID3");
146 
147 	gpio_direction_input(KC1_GPIO_MBID0);
148 	gpio_direction_input(KC1_GPIO_MBID1);
149 	gpio_direction_input(KC1_GPIO_MBID2);
150 	gpio_direction_input(KC1_GPIO_MBID3);
151 
152 	value |= (gpio_get_value(KC1_GPIO_MBID0) << 0);
153 	value |= (gpio_get_value(KC1_GPIO_MBID1) << 1);
154 	value |= (gpio_get_value(KC1_GPIO_MBID2) << 2);
155 	value |= (gpio_get_value(KC1_GPIO_MBID3) << 3);
156 
157 	return value;
158 }
159 
160 void get_board_serial(struct tag_serialnr *serialnr)
161 {
162 	omap_die_id_get_board_serial(serialnr);
163 }
164 
165 int fb_set_reboot_flag(void)
166 {
167 	return omap_reboot_mode_store("b");
168 }
169 
170 int board_mmc_init(bd_t *bis)
171 {
172 	return omap_mmc_init(1, 0, 0, -1, -1);
173 }
174 
175 void board_mmc_power_init(void)
176 {
177 	twl6030_power_mmc_init(1);
178 }
179