arch/arm/mach-imx/mach-mx53_evk.c

   1 /*
   2  * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
   3  * Copyright (C) 2010 Yong Shen. <Yong.Shen@linaro.org>
   4  */
   5
   6 /*
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/clk.h>
  24 #include <linux/delay.h>
  25 #include <linux/gpio.h>
  26 #include <linux/spi/flash.h>
  27 #include <linux/spi/spi.h>
  28 #include <mach/common.h>
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/time.h>
  33 #include <mach/iomux-mx53.h>
  34
  35 #define MX53_EVK_FEC_PHY_RST    IMX_GPIO_NR(7, 6)
  36 #define EVK_ECSPI1_CS0          IMX_GPIO_NR(2, 30)
  37 #define EVK_ECSPI1_CS1          IMX_GPIO_NR(3, 19)
  38 #define MX53EVK_LED             IMX_GPIO_NR(7, 7)
  39
  40 #include "devices-imx53.h"
  41
  42 static iomux_v3_cfg_t mx53_evk_pads[] = {
  43         MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
  44         MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,
  45
  46         MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
  47         MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
  48         MX53_PAD_PATA_DIOR__UART2_RTS,
  49         MX53_PAD_PATA_INTRQ__UART2_CTS,
  50
  51         MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
  52         MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
  53
  54         MX53_PAD_EIM_D16__ECSPI1_SCLK,
  55         MX53_PAD_EIM_D17__ECSPI1_MISO,
  56         MX53_PAD_EIM_D18__ECSPI1_MOSI,
  57
  58         /* ecspi chip select lines */
  59         MX53_PAD_EIM_EB2__GPIO2_30,
  60         MX53_PAD_EIM_D19__GPIO3_19,
  61         /* LED */
  62         MX53_PAD_PATA_DA_1__GPIO7_7,
  63 };
  64
  65 static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
  66         .flags = IMXUART_HAVE_RTSCTS,
  67 };
  68
  69 static const struct gpio_led mx53evk_leds[] __initconst = {
  70         {
  71                 .name                   = "green",
  72                 .default_trigger        = "heartbeat",
  73                 .gpio                   = MX53EVK_LED,
  74         },
  75 };
  76
  77 static const struct gpio_led_platform_data mx53evk_leds_data __initconst = {
  78         .leds           = mx53evk_leds,
  79         .num_leds       = ARRAY_SIZE(mx53evk_leds),
  80 };
  81
  82 static inline void mx53_evk_init_uart(void)
  83 {
  84         imx53_add_imx_uart(0, NULL);
  85         imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
  86         imx53_add_imx_uart(2, NULL);
  87 }
  88
  89 static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
  90         .bitrate = 100000,
  91 };
  92
  93 static inline void mx53_evk_fec_reset(void)
  94 {
  95         int ret;
  96
  97         /* reset FEC PHY */
  98         ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
  99                                                         "fec-phy-reset");
 100         if (ret) {
 101                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
 102                 return;
 103         }
 104         msleep(1);
 105         gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
 106 }
 107
 108 static const struct fec_platform_data mx53_evk_fec_pdata __initconst = {
 109         .phy = PHY_INTERFACE_MODE_RMII,
 110 };
 111
 112 static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
 113         {
 114                 .modalias = "mtd_dataflash",
 115                 .max_speed_hz = 25000000,
 116                 .bus_num = 0,
 117                 .chip_select = 1,
 118                 .mode = SPI_MODE_0,
 119                 .platform_data = NULL,
 120         },
 121 };
 122
 123 static int mx53_evk_spi_cs[] = {
 124         EVK_ECSPI1_CS0,
 125         EVK_ECSPI1_CS1,
 126 };
 127
 128 static const struct spi_imx_master mx53_evk_spi_data __initconst = {
 129         .chipselect     = mx53_evk_spi_cs,
 130         .num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
 131 };
 132
 133 void __init imx53_evk_common_init(void)
 134 {
 135         mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
 136                                          ARRAY_SIZE(mx53_evk_pads));
 137 }
 138
 139 static void __init mx53_evk_board_init(void)
 140 {
 141         imx53_soc_init();
 142         imx53_evk_common_init();
 143
 144         mx53_evk_init_uart();
 145         mx53_evk_fec_reset();
 146         imx53_add_fec(&mx53_evk_fec_pdata);
 147
 148         imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
 149         imx53_add_imx_i2c(1, &mx53_evk_i2c_data);
 150
 151         imx53_add_sdhci_esdhc_imx(0, NULL);
 152         imx53_add_sdhci_esdhc_imx(1, NULL);
 153
 154         spi_register_board_info(mx53_evk_spi_board_info,
 155                 ARRAY_SIZE(mx53_evk_spi_board_info));
 156         imx53_add_ecspi(0, &mx53_evk_spi_data);
 157         imx53_add_imx2_wdt(0, NULL);
 158         gpio_led_register_device(-1, &mx53evk_leds_data);
 159 }
 160
 161 static void __init mx53_evk_timer_init(void)
 162 {
 163         mx53_clocks_init(32768, 24000000, 22579200, 0);
 164 }
 165
 166 static struct sys_timer mx53_evk_timer = {
 167         .init   = mx53_evk_timer_init,
 168 };
 169
 170 MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
 171         .map_io = mx53_map_io,
 172         .init_early = imx53_init_early,
 173         .init_irq = mx53_init_irq,
 174         .handle_irq = imx53_handle_irq,
 175         .timer = &mx53_evk_timer,
 176         .init_machine = mx53_evk_board_init,
 177         .restart        = mxc_restart,
 178 MACHINE_END