xref: /openbmc/u-boot/board/amazon/kc1/kc1.c (revision 1494cc89)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Amazon Kindle Fire (first generation) codename kc1 config
4  *
5  * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
6  */
7 
8 #include <config.h>
9 #include <common.h>
10 #include <linux/ctype.h>
11 #include <linux/usb/musb.h>
12 #include <asm/omap_musb.h>
13 #include <asm/arch/sys_proto.h>
14 #include <asm/arch/mmc_host_def.h>
15 #include <asm/gpio.h>
16 #include <asm/emif.h>
17 #include <twl6030.h>
18 #include "kc1.h"
19 #include <asm/mach-types.h>
20 
21 DECLARE_GLOBAL_DATA_PTR;
22 
23 const struct omap_sysinfo sysinfo = {
24 	.board_string = "kc1"
25 };
26 
27 static struct musb_hdrc_config musb_config = {
28 	.multipoint = 1,
29 	.dyn_fifo = 1,
30 	.num_eps = 16,
31 	.ram_bits = 12
32 };
33 
34 static struct omap_musb_board_data musb_board_data = {
35 	.interface_type	= MUSB_INTERFACE_UTMI,
36 };
37 
38 static struct musb_hdrc_platform_data musb_platform_data = {
39 	.mode = MUSB_PERIPHERAL,
40 	.config = &musb_config,
41 	.power = 100,
42 	.platform_ops = &omap2430_ops,
43 	.board_data = &musb_board_data,
44 };
45 
46 
47 void set_muxconf_regs(void)
48 {
49 	do_set_mux((*ctrl)->control_padconf_core_base, core_padconf_array,
50 		sizeof(core_padconf_array) / sizeof(struct pad_conf_entry));
51 }
52 
53 struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
54 	struct lpddr2_device_details *lpddr2_dev_details)
55 {
56 	if (cs == CS1)
57 		return NULL;
58 
59 	*lpddr2_dev_details = elpida_2G_S4_details;
60 
61 	return lpddr2_dev_details;
62 }
63 
64 void emif_get_device_timings(u32 emif_nr,
65 	const struct lpddr2_device_timings **cs0_device_timings,
66 	const struct lpddr2_device_timings **cs1_device_timings)
67 {
68 	*cs0_device_timings = &elpida_2G_S4_timings;
69 	*cs1_device_timings = NULL;
70 }
71 
72 int board_init(void)
73 {
74 	/* GPMC init */
75 	gpmc_init();
76 
77 	/* MACH number */
78 	gd->bd->bi_arch_number = MACH_TYPE_OMAP_4430SDP;
79 
80 	/* ATAGs location */
81 	gd->bd->bi_boot_params = OMAP44XX_DRAM_ADDR_SPACE_START + 0x100;
82 
83 	return 0;
84 }
85 
86 int misc_init_r(void)
87 {
88 	char reboot_mode[2] = { 0 };
89 	u32 data = 0;
90 	u32 value;
91 	int rc;
92 
93 	/* Reboot mode */
94 
95 	rc = omap_reboot_mode(reboot_mode, sizeof(reboot_mode));
96 
97 	/* USB ID pin pull-up indicates factory (fastboot) cable detection. */
98 	gpio_request(KC1_GPIO_USB_ID, "USB_ID");
99 	gpio_direction_input(KC1_GPIO_USB_ID);
100 	value = gpio_get_value(KC1_GPIO_USB_ID);
101 
102 	if (value)
103 		reboot_mode[0] = 'b';
104 
105 	if (rc < 0 || reboot_mode[0] == 'o') {
106 		/*
107 		 * When not rebooting, valid power on reasons are either the
108 		 * power button, charger plug or USB plug.
109 		 */
110 
111 		data |= twl6030_input_power_button();
112 		data |= twl6030_input_charger();
113 		data |= twl6030_input_usb();
114 
115 		if (!data)
116 			twl6030_power_off();
117 	}
118 
119 	if (reboot_mode[0] > 0 && isascii(reboot_mode[0])) {
120 		if (!env_get("reboot-mode"))
121 			env_set("reboot-mode", (char *)reboot_mode);
122 	}
123 
124 	omap_reboot_mode_clear();
125 
126 	/* Serial number */
127 
128 	omap_die_id_serial();
129 
130 	/* MUSB */
131 
132 	musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
133 
134 	return 0;
135 }
136 
137 u32 get_board_rev(void)
138 {
139 	u32 value = 0;
140 
141 	gpio_request(KC1_GPIO_MBID0, "MBID0");
142 	gpio_request(KC1_GPIO_MBID1, "MBID1");
143 	gpio_request(KC1_GPIO_MBID2, "MBID2");
144 	gpio_request(KC1_GPIO_MBID3, "MBID3");
145 
146 	gpio_direction_input(KC1_GPIO_MBID0);
147 	gpio_direction_input(KC1_GPIO_MBID1);
148 	gpio_direction_input(KC1_GPIO_MBID2);
149 	gpio_direction_input(KC1_GPIO_MBID3);
150 
151 	value |= (gpio_get_value(KC1_GPIO_MBID0) << 0);
152 	value |= (gpio_get_value(KC1_GPIO_MBID1) << 1);
153 	value |= (gpio_get_value(KC1_GPIO_MBID2) << 2);
154 	value |= (gpio_get_value(KC1_GPIO_MBID3) << 3);
155 
156 	return value;
157 }
158 
159 void get_board_serial(struct tag_serialnr *serialnr)
160 {
161 	omap_die_id_get_board_serial(serialnr);
162 }
163 
164 int fb_set_reboot_flag(void)
165 {
166 	return omap_reboot_mode_store("b");
167 }
168 
169 int board_mmc_init(bd_t *bis)
170 {
171 	return omap_mmc_init(1, 0, 0, -1, -1);
172 }
173 
174 void board_mmc_power_init(void)
175 {
176 	twl6030_power_mmc_init(1);
177 }
178