1 /*
2 * Board support file for Nokia N900 (aka RX-51).
3 *
4 * Copyright (C) 2007, 2008 Nokia
5 * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
6 * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/delay.h>
17 #include <linux/err.h>
18 #include <linux/clk.h>
19 #include <linux/io.h>
20 #include <linux/gpio.h>
21 #include <linux/leds.h>
22 #include <linux/usb/phy.h>
23 #include <linux/usb/musb.h>
24 #include <linux/platform_data/spi-omap2-mcspi.h>
25
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29
30 #include <linux/omap-dma.h>
31
32 #include "common.h"
33 #include "mux.h"
34 #include "gpmc.h"
35 #include "pm.h"
36 #include "soc.h"
37 #include "sdram-nokia.h"
38 #include "omap-secure.h"
39
40 #define RX51_GPIO_SLEEP_IND 162
41
42 static struct gpio_led gpio_leds[] = {
43 {
44 .name = "sleep_ind",
45 .gpio = RX51_GPIO_SLEEP_IND,
46 },
47 };
48
49 static struct gpio_led_platform_data gpio_led_info = {
50 .leds = gpio_leds,
51 .num_leds = ARRAY_SIZE(gpio_leds),
52 };
53
54 static struct platform_device leds_gpio = {
55 .name = "leds-gpio",
56 .id = -1,
57 .dev = {
58 .platform_data = &gpio_led_info,
59 },
60 };
61
62 /*
63 * cpuidle C-states definition for rx51.
64 *
65 * The 'exit_latency' field is the sum of sleep
66 * and wake-up latencies.
67
68 ---------------------------------------------
69 | state | exit_latency | target_residency |
70 ---------------------------------------------
71 | C1 | 110 + 162 | 5 |
72 | C2 | 106 + 180 | 309 |
73 | C3 | 107 + 410 | 46057 |
74 | C4 | 121 + 3374 | 46057 |
75 | C5 | 855 + 1146 | 46057 |
76 | C6 | 7580 + 4134 | 484329 |
77 | C7 | 7505 + 15274 | 484329 |
78 ---------------------------------------------
79
80 */
81
82 extern void __init rx51_peripherals_init(void);
83
84 #ifdef CONFIG_OMAP_MUX
85 static struct omap_board_mux board_mux[] __initdata = {
86 { .reg_offset = OMAP_MUX_TERMINATOR },
87 };
88 #endif
89
90 static struct omap_musb_board_data musb_board_data = {
91 .interface_type = MUSB_INTERFACE_ULPI,
92 .mode = MUSB_OTG,
93 .power = 0,
94 };
95
rx51_init(void)96 static void __init rx51_init(void)
97 {
98 struct omap_sdrc_params *sdrc_params;
99
100 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
101 omap_serial_init();
102
103 sdrc_params = nokia_get_sdram_timings();
104 omap_sdrc_init(sdrc_params, sdrc_params);
105
106 usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
107 usb_musb_init(&musb_board_data);
108 rx51_peripherals_init();
109
110 if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
111 #ifdef CONFIG_ARM_ERRATA_430973
112 pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
113 /* set IBE to 1 */
114 rx51_secure_update_aux_cr(BIT(6), 0);
115 #endif
116 }
117
118 /* Ensure SDRC pins are mux'd for self-refresh */
119 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
120 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
121
122 platform_device_register(&leds_gpio);
123 }
124
rx51_reserve(void)125 static void __init rx51_reserve(void)
126 {
127 omap_reserve();
128 }
129
130 MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
131 /* Maintainer: Lauri Leukkunen <lauri.leukkunen@nokia.com> */
132 .atag_offset = 0x100,
133 .reserve = rx51_reserve,
134 .map_io = omap3_map_io,
135 .init_early = omap3430_init_early,
136 .init_irq = omap3_init_irq,
137 .init_machine = rx51_init,
138 .init_late = omap3430_init_late,
139 .init_time = omap_init_time,
140 .restart = omap3xxx_restart,
141 MACHINE_END
142