1 /*
2 * board setup for STMP378x-Development-Board
3 *
4 * based on mx23evk board setup and information gained form the original
5 * plat-stmp based board setup, now converted to mach-mxs.
6 *
7 * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
8 * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
19
20 #include <linux/platform_device.h>
21 #include <linux/gpio.h>
22 #include <linux/spi/spi.h>
23
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/time.h>
27
28 #include <mach/common.h>
29 #include <mach/iomux-mx23.h>
30
31 #include "devices-mx23.h"
32
33 #define STMP378X_DEVB_MMC0_WRITE_PROTECT MXS_GPIO_NR(1, 30)
34 #define STMP378X_DEVB_MMC0_SLOT_POWER MXS_GPIO_NR(1, 29)
35
36 #define STMP378X_DEVB_PAD_AUART (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL)
37
38 static const iomux_cfg_t stmp378x_dvb_pads[] __initconst = {
39 /* duart (extended setup missing in old boardcode, too */
40 MX23_PAD_PWM0__DUART_RX,
41 MX23_PAD_PWM1__DUART_TX,
42
43 /* auart */
44 MX23_PAD_AUART1_RX__AUART1_RX | STMP378X_DEVB_PAD_AUART,
45 MX23_PAD_AUART1_TX__AUART1_TX | STMP378X_DEVB_PAD_AUART,
46 MX23_PAD_AUART1_CTS__AUART1_CTS | STMP378X_DEVB_PAD_AUART,
47 MX23_PAD_AUART1_RTS__AUART1_RTS | STMP378X_DEVB_PAD_AUART,
48
49 /* mmc */
50 MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
51 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
52 MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
53 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
54 MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
55 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
56 MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
57 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
58 MX23_PAD_SSP1_CMD__SSP1_CMD |
59 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
60 MX23_PAD_SSP1_DETECT__SSP1_DETECT |
61 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
62 MX23_PAD_SSP1_SCK__SSP1_SCK |
63 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
64 MX23_PAD_PWM4__GPIO_1_30 | MXS_PAD_CTRL, /* write protect */
65 MX23_PAD_PWM3__GPIO_1_29 | MXS_PAD_CTRL, /* power enable */
66 };
67
68 static struct mxs_mmc_platform_data stmp378x_dvb_mmc_pdata __initdata = {
69 .wp_gpio = STMP378X_DEVB_MMC0_WRITE_PROTECT,
70 };
71
72 static struct spi_board_info spi_board_info[] __initdata = {
73 #if defined(CONFIG_ENC28J60) || defined(CONFIG_ENC28J60_MODULE)
74 {
75 .modalias = "enc28j60",
76 .max_speed_hz = 6 * 1000 * 1000,
77 .bus_num = 1,
78 .chip_select = 0,
79 .platform_data = NULL,
80 },
81 #endif
82 };
83
stmp378x_dvb_init(void)84 static void __init stmp378x_dvb_init(void)
85 {
86 int ret;
87
88 mxs_iomux_setup_multiple_pads(stmp378x_dvb_pads,
89 ARRAY_SIZE(stmp378x_dvb_pads));
90
91 mx23_add_duart();
92 mx23_add_auart0();
93 mx23_add_rtc_stmp3xxx();
94
95 /* power on mmc slot */
96 ret = gpio_request_one(STMP378X_DEVB_MMC0_SLOT_POWER,
97 GPIOF_OUT_INIT_LOW, "mmc0-slot-power");
98 if (ret)
99 pr_warn("could not power mmc (%d)\n", ret);
100
101 mx23_add_mxs_mmc(0, &stmp378x_dvb_mmc_pdata);
102
103 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
104 }
105
stmp378x_dvb_timer_init(void)106 static void __init stmp378x_dvb_timer_init(void)
107 {
108 mx23_clocks_init();
109 }
110
111 static struct sys_timer stmp378x_dvb_timer = {
112 .init = stmp378x_dvb_timer_init,
113 };
114
115 MACHINE_START(STMP378X, "STMP378X")
116 .map_io = mx23_map_io,
117 .init_irq = mx23_init_irq,
118 .timer = &stmp378x_dvb_timer,
119 .init_machine = stmp378x_dvb_init,
120 .restart = mxs_restart,
121 MACHINE_END
122