1 /*
2 * arch/arm/mach-ep93xx/simone.c
3 * Simplemachines Sim.One support.
4 *
5 * Copyright (C) 2010 Ryan Mallon
6 *
7 * Based on the 2.6.24.7 support:
8 * Copyright (C) 2009 Simplemachines
9 * MMC support by Peter Ivanov <ivanovp@gmail.com>, 2007
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 */
17
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/platform_device.h>
21 #include <linux/i2c.h>
22 #include <linux/mmc/host.h>
23 #include <linux/spi/spi.h>
24 #include <linux/spi/mmc_spi.h>
25 #include <linux/platform_data/video-ep93xx.h>
26 #include <linux/platform_data/spi-ep93xx.h>
27 #include <linux/gpio.h>
28
29 #include <mach/hardware.h>
30 #include <mach/gpio-ep93xx.h>
31
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34
35 #include "soc.h"
36
37 static struct ep93xx_eth_data __initdata simone_eth_data = {
38 .phy_id = 1,
39 };
40
41 static struct ep93xxfb_mach_info __initdata simone_fb_info = {
42 .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
43 };
44
45 static struct mmc_spi_platform_data simone_mmc_spi_data = {
46 .detect_delay = 500,
47 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
48 .flags = MMC_SPI_USE_CD_GPIO,
49 .cd_gpio = EP93XX_GPIO_LINE_EGPIO0,
50 .cd_debounce = 1,
51 };
52
53 static struct spi_board_info simone_spi_devices[] __initdata = {
54 {
55 .modalias = "mmc_spi",
56 .platform_data = &simone_mmc_spi_data,
57 /*
58 * We use 10 MHz even though the maximum is 3.7 MHz. The driver
59 * will limit it automatically to max. frequency.
60 */
61 .max_speed_hz = 10 * 1000 * 1000,
62 .bus_num = 0,
63 .chip_select = 0,
64 .mode = SPI_MODE_3,
65 },
66 };
67
68 /*
69 * Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
70 * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
71 * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
72 */
73 static int simone_spi_chipselects[] __initdata = {
74 EP93XX_GPIO_LINE_EGPIO1,
75 };
76
77 static struct ep93xx_spi_info simone_spi_info __initdata = {
78 .chipselect = simone_spi_chipselects,
79 .num_chipselect = ARRAY_SIZE(simone_spi_chipselects),
80 .use_dma = 1,
81 };
82
83 static struct i2c_board_info __initdata simone_i2c_board_info[] = {
84 {
85 I2C_BOARD_INFO("ds1337", 0x68),
86 },
87 };
88
89 static struct platform_device simone_audio_device = {
90 .name = "simone-audio",
91 .id = -1,
92 };
93
simone_register_audio(void)94 static void __init simone_register_audio(void)
95 {
96 ep93xx_register_ac97();
97 platform_device_register(&simone_audio_device);
98 }
99
simone_init_machine(void)100 static void __init simone_init_machine(void)
101 {
102 ep93xx_init_devices();
103 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M);
104 ep93xx_register_eth(&simone_eth_data, 1);
105 ep93xx_register_fb(&simone_fb_info);
106 ep93xx_register_i2c(simone_i2c_board_info,
107 ARRAY_SIZE(simone_i2c_board_info));
108 ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
109 ARRAY_SIZE(simone_spi_devices));
110 simone_register_audio();
111 }
112
113 MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board")
114 /* Maintainer: Ryan Mallon */
115 .atag_offset = 0x100,
116 .map_io = ep93xx_map_io,
117 .init_irq = ep93xx_init_irq,
118 .init_time = ep93xx_timer_init,
119 .init_machine = simone_init_machine,
120 .init_late = ep93xx_init_late,
121 .restart = ep93xx_restart,
122 MACHINE_END
123
