arch/arm/mach-mxs/mach-stmp378x_devb.c

   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
  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
 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