arch/arm/mach-mxs/mach-tx28.c

   1 /*
   2  * Copyright (C) 2010 <LW@KARO-electronics.de>
   3  *
   4  * based on: mach-mx28_evk.c
   5  * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/gpio.h>
  13 #include <linux/leds.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/spi/spi.h>
  16 #include <linux/spi/spi_gpio.h>
  17 #include <linux/i2c.h>
  18
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/time.h>
  21
  22 #include <mach/common.h>
  23 #include <mach/iomux-mx28.h>
  24
  25 #include "devices-mx28.h"
  26 #include "module-tx28.h"
  27
  28 #define TX28_STK5_GPIO_LED              MXS_GPIO_NR(4, 10)
  29
  30 static const iomux_cfg_t tx28_stk5v3_pads[] __initconst = {
  31         /* LED */
  32         MX28_PAD_ENET0_RXD3__GPIO_4_10 |
  33                 MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_NOPULL,
  34
  35         /* framebuffer */
  36 #define LCD_MODE (MXS_PAD_3V3 | MXS_PAD_4MA)
  37         MX28_PAD_LCD_D00__LCD_D0 | LCD_MODE,
  38         MX28_PAD_LCD_D01__LCD_D1 | LCD_MODE,
  39         MX28_PAD_LCD_D02__LCD_D2 | LCD_MODE,
  40         MX28_PAD_LCD_D03__LCD_D3 | LCD_MODE,
  41         MX28_PAD_LCD_D04__LCD_D4 | LCD_MODE,
  42         MX28_PAD_LCD_D05__LCD_D5 | LCD_MODE,
  43         MX28_PAD_LCD_D06__LCD_D6 | LCD_MODE,
  44         MX28_PAD_LCD_D07__LCD_D7 | LCD_MODE,
  45         MX28_PAD_LCD_D08__LCD_D8 | LCD_MODE,
  46         MX28_PAD_LCD_D09__LCD_D9 | LCD_MODE,
  47         MX28_PAD_LCD_D10__LCD_D10 | LCD_MODE,
  48         MX28_PAD_LCD_D11__LCD_D11 | LCD_MODE,
  49         MX28_PAD_LCD_D12__LCD_D12 | LCD_MODE,
  50         MX28_PAD_LCD_D13__LCD_D13 | LCD_MODE,
  51         MX28_PAD_LCD_D14__LCD_D14 | LCD_MODE,
  52         MX28_PAD_LCD_D15__LCD_D15 | LCD_MODE,
  53         MX28_PAD_LCD_D16__LCD_D16 | LCD_MODE,
  54         MX28_PAD_LCD_D17__LCD_D17 | LCD_MODE,
  55         MX28_PAD_LCD_D18__LCD_D18 | LCD_MODE,
  56         MX28_PAD_LCD_D19__LCD_D19 | LCD_MODE,
  57         MX28_PAD_LCD_D20__LCD_D20 | LCD_MODE,
  58         MX28_PAD_LCD_D21__LCD_D21 | LCD_MODE,
  59         MX28_PAD_LCD_D22__LCD_D22 | LCD_MODE,
  60         MX28_PAD_LCD_D23__LCD_D23 | LCD_MODE,
  61         MX28_PAD_LCD_RD_E__LCD_VSYNC | LCD_MODE,
  62         MX28_PAD_LCD_WR_RWN__LCD_HSYNC | LCD_MODE,
  63         MX28_PAD_LCD_RS__LCD_DOTCLK | LCD_MODE,
  64         MX28_PAD_LCD_CS__LCD_CS | LCD_MODE,
  65         MX28_PAD_LCD_VSYNC__LCD_VSYNC | LCD_MODE,
  66         MX28_PAD_LCD_HSYNC__LCD_HSYNC | LCD_MODE,
  67         MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | LCD_MODE,
  68         MX28_PAD_LCD_ENABLE__GPIO_1_31 | LCD_MODE,
  69         MX28_PAD_LCD_RESET__GPIO_3_30 | LCD_MODE,
  70         MX28_PAD_PWM0__PWM_0 | LCD_MODE,
  71
  72         /* UART1 */
  73         MX28_PAD_AUART0_CTS__DUART_RX,
  74         MX28_PAD_AUART0_RTS__DUART_TX,
  75         MX28_PAD_AUART0_TX__DUART_RTS,
  76         MX28_PAD_AUART0_RX__DUART_CTS,
  77
  78         /* UART2 */
  79         MX28_PAD_AUART1_RX__AUART1_RX,
  80         MX28_PAD_AUART1_TX__AUART1_TX,
  81         MX28_PAD_AUART1_RTS__AUART1_RTS,
  82         MX28_PAD_AUART1_CTS__AUART1_CTS,
  83
  84         /* CAN */
  85         MX28_PAD_GPMI_RDY2__CAN0_TX,
  86         MX28_PAD_GPMI_RDY3__CAN0_RX,
  87
  88         /* I2C */
  89         MX28_PAD_I2C0_SCL__I2C0_SCL,
  90         MX28_PAD_I2C0_SDA__I2C0_SDA,
  91
  92         /* TSC2007 */
  93         MX28_PAD_SAIF0_MCLK__GPIO_3_20 | MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP,
  94
  95         /* MMC0 */
  96         MX28_PAD_SSP0_DATA0__SSP0_D0 |
  97                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
  98         MX28_PAD_SSP0_DATA1__SSP0_D1 |
  99                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 100         MX28_PAD_SSP0_DATA2__SSP0_D2 |
 101                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 102         MX28_PAD_SSP0_DATA3__SSP0_D3 |
 103                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 104         MX28_PAD_SSP0_CMD__SSP0_CMD |
 105                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 106         MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
 107                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 108         MX28_PAD_SSP0_SCK__SSP0_SCK |
 109                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 110 };
 111
 112 static const struct gpio_led tx28_stk5v3_leds[] __initconst = {
 113         {
 114                 .name = "GPIO-LED",
 115                 .default_trigger = "heartbeat",
 116                 .gpio = TX28_STK5_GPIO_LED,
 117         },
 118 };
 119
 120 static const struct gpio_led_platform_data tx28_stk5v3_led_data __initconst = {
 121         .leds = tx28_stk5v3_leds,
 122         .num_leds = ARRAY_SIZE(tx28_stk5v3_leds),
 123 };
 124
 125 static struct spi_board_info tx28_spi_board_info[] = {
 126         {
 127                 .modalias = "spidev",
 128                 .max_speed_hz = 20000000,
 129                 .bus_num = 0,
 130                 .chip_select = 1,
 131                 .controller_data = (void *)SPI_GPIO_NO_CHIPSELECT,
 132                 .mode = SPI_MODE_0,
 133         },
 134 };
 135
 136 static struct i2c_board_info tx28_stk5v3_i2c_boardinfo[] __initdata = {
 137         {
 138                 I2C_BOARD_INFO("ds1339", 0x68),
 139         },
 140 };
 141
 142 static struct mxs_mmc_platform_data tx28_mmc0_pdata __initdata = {
 143        .wp_gpio = -EINVAL,
 144        .flags = SLOTF_4_BIT_CAPABLE,
 145 };
 146
 147 static void __init tx28_stk5v3_init(void)
 148 {
 149         mxs_iomux_setup_multiple_pads(tx28_stk5v3_pads,
 150                         ARRAY_SIZE(tx28_stk5v3_pads));
 151
 152         mx28_add_duart(); /* UART1 */
 153         mx28_add_auart(1); /* UART2 */
 154
 155         tx28_add_fec0();
 156         /* spi via ssp will be added when available */
 157         spi_register_board_info(tx28_spi_board_info,
 158                         ARRAY_SIZE(tx28_spi_board_info));
 159         gpio_led_register_device(0, &tx28_stk5v3_led_data);
 160         mx28_add_mxs_i2c(0);
 161         i2c_register_board_info(0, tx28_stk5v3_i2c_boardinfo,
 162                         ARRAY_SIZE(tx28_stk5v3_i2c_boardinfo));
 163         mx28_add_mxs_mmc(0, &tx28_mmc0_pdata);
 164 }
 165
 166 static void __init tx28_timer_init(void)
 167 {
 168         mx28_clocks_init();
 169 }
 170
 171 static struct sys_timer tx28_timer = {
 172         .init = tx28_timer_init,
 173 };
 174
 175 MACHINE_START(TX28, "Ka-Ro electronics TX28 module")
 176         .map_io = mx28_map_io,
 177         .init_irq = mx28_init_irq,
 178         .init_machine = tx28_stk5v3_init,
 179         .timer = &tx28_timer,
 180 MACHINE_END