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/irq.h>
  23 #include <linux/spi/spi.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/time.h>
  28
  29 #include <mach/common.h>
  30 #include <mach/iomux-mx23.h>
  31
  32 #include "devices-mx23.h"
  33
  34 #define STMP378X_DEVB_MMC0_WRITE_PROTECT        MXS_GPIO_NR(1, 30)
  35 #define STMP378X_DEVB_MMC0_SLOT_POWER           MXS_GPIO_NR(1, 29)
  36
  37 #define STMP378X_DEVB_PAD_AUART (MXS_PAD_4MA | MXS_PAD_1V8 | MXS_PAD_NOPULL)
  38
  39 static const iomux_cfg_t stmp378x_dvb_pads[] __initconst = {
  40         /* duart (extended setup missing in old boardcode, too */
  41         MX23_PAD_PWM0__DUART_RX,
  42         MX23_PAD_PWM1__DUART_TX,
  43
  44         /* auart */
  45         MX23_PAD_AUART1_RX__AUART1_RX | STMP378X_DEVB_PAD_AUART,
  46         MX23_PAD_AUART1_TX__AUART1_TX | STMP378X_DEVB_PAD_AUART,
  47         MX23_PAD_AUART1_CTS__AUART1_CTS | STMP378X_DEVB_PAD_AUART,
  48         MX23_PAD_AUART1_RTS__AUART1_RTS | STMP378X_DEVB_PAD_AUART,
  49
  50         /* mmc */
  51         MX23_PAD_SSP1_DATA0__SSP1_DATA0 |
  52                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  53         MX23_PAD_SSP1_DATA1__SSP1_DATA1 |
  54                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  55         MX23_PAD_SSP1_DATA2__SSP1_DATA2 |
  56                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  57         MX23_PAD_SSP1_DATA3__SSP1_DATA3 |
  58                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  59         MX23_PAD_SSP1_CMD__SSP1_CMD |
  60                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  61         MX23_PAD_SSP1_DETECT__SSP1_DETECT |
  62                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
  63         MX23_PAD_SSP1_SCK__SSP1_SCK |
  64                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
  65         MX23_PAD_PWM4__GPIO_1_30 | MXS_PAD_CTRL, /* write protect */
  66         MX23_PAD_PWM3__GPIO_1_29 | MXS_PAD_CTRL, /* power enable */
  67 };
  68
  69 static struct mxs_mmc_platform_data stmp378x_dvb_mmc_pdata __initdata = {
  70         .wp_gpio = STMP378X_DEVB_MMC0_WRITE_PROTECT,
  71 };
  72
  73 static struct spi_board_info spi_board_info[] __initdata = {
  74 #if defined(CONFIG_ENC28J60) || defined(CONFIG_ENC28J60_MODULE)
  75         {
  76                 .modalias       = "enc28j60",
  77                 .max_speed_hz   = 6 * 1000 * 1000,
  78                 .bus_num        = 1,
  79                 .chip_select    = 0,
  80                 .platform_data  = NULL,
  81         },
  82 #endif
  83 };
  84
  85 static void __init stmp378x_dvb_init(void)
  86 {
  87         int ret;
  88
  89         mxs_iomux_setup_multiple_pads(stmp378x_dvb_pads,
  90                         ARRAY_SIZE(stmp378x_dvb_pads));
  91
  92         mx23_add_duart();
  93         mx23_add_auart0();
  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         .init_machine   = stmp378x_dvb_init,
 119         .timer          = &stmp378x_dvb_timer,
 120 MACHINE_END