arch/arm/mach-mx5/board-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 "crm_regs.h"
  41 #include "devices-imx53.h"
  42
  43 static iomux_v3_cfg_t mx53_evk_pads[] = {
  44         MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
  45         MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,
  46
  47         MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
  48         MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
  49         MX53_PAD_PATA_DIOR__UART2_RTS,
  50         MX53_PAD_PATA_INTRQ__UART2_CTS,
  51
  52         MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
  53         MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
  54
  55         MX53_PAD_EIM_D16__ECSPI1_SCLK,
  56         MX53_PAD_EIM_D17__ECSPI1_MISO,
  57         MX53_PAD_EIM_D18__ECSPI1_MOSI,
  58
  59         /* ecspi chip select lines */
  60         MX53_PAD_EIM_EB2__GPIO2_30,
  61         MX53_PAD_EIM_D19__GPIO3_19,
  62         /* LED */
  63         MX53_PAD_PATA_DA_1__GPIO7_7,
  64 };
  65
  66 static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
  67         .flags = IMXUART_HAVE_RTSCTS,
  68 };
  69
  70 static const struct gpio_led mx53evk_leds[] __initconst = {
  71         {
  72                 .name                   = "green",
  73                 .default_trigger        = "heartbeat",
  74                 .gpio                   = MX53EVK_LED,
  75         },
  76 };
  77
  78 static const struct gpio_led_platform_data mx53evk_leds_data __initconst = {
  79         .leds           = mx53evk_leds,
  80         .num_leds       = ARRAY_SIZE(mx53evk_leds),
  81 };
  82
  83 static inline void mx53_evk_init_uart(void)
  84 {
  85         imx53_add_imx_uart(0, NULL);
  86         imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
  87         imx53_add_imx_uart(2, NULL);
  88 }
  89
  90 static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
  91         .bitrate = 100000,
  92 };
  93
  94 static inline void mx53_evk_fec_reset(void)
  95 {
  96         int ret;
  97
  98         /* reset FEC PHY */
  99         ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
 100                                                         "fec-phy-reset");
 101         if (ret) {
 102                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
 103                 return;
 104         }
 105         msleep(1);
 106         gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
 107 }
 108
 109 static struct fec_platform_data mx53_evk_fec_pdata = {
 110         .phy = PHY_INTERFACE_MODE_RMII,
 111 };
 112
 113 static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
 114         {
 115                 .modalias = "mtd_dataflash",
 116                 .max_speed_hz = 25000000,
 117                 .bus_num = 0,
 118                 .chip_select = 1,
 119                 .mode = SPI_MODE_0,
 120                 .platform_data = NULL,
 121         },
 122 };
 123
 124 static int mx53_evk_spi_cs[] = {
 125         EVK_ECSPI1_CS0,
 126         EVK_ECSPI1_CS1,
 127 };
 128
 129 static const struct spi_imx_master mx53_evk_spi_data __initconst = {
 130         .chipselect     = mx53_evk_spi_cs,
 131         .num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
 132 };
 133
 134 static void __init mx53_evk_board_init(void)
 135 {
 136         imx53_soc_init();
 137
 138         mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
 139                                         ARRAY_SIZE(mx53_evk_pads));
 140         mx53_evk_init_uart();
 141         mx53_evk_fec_reset();
 142         imx53_add_fec(&mx53_evk_fec_pdata);
 143
 144         imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
 145         imx53_add_imx_i2c(1, &mx53_evk_i2c_data);
 146
 147         imx53_add_sdhci_esdhc_imx(0, NULL);
 148         imx53_add_sdhci_esdhc_imx(1, NULL);
 149
 150         spi_register_board_info(mx53_evk_spi_board_info,
 151                 ARRAY_SIZE(mx53_evk_spi_board_info));
 152         imx53_add_ecspi(0, &mx53_evk_spi_data);
 153         imx53_add_imx2_wdt(0, NULL);
 154         gpio_led_register_device(-1, &mx53evk_leds_data);
 155 }
 156
 157 static void __init mx53_evk_timer_init(void)
 158 {
 159         mx53_clocks_init(32768, 24000000, 22579200, 0);
 160 }
 161
 162 static struct sys_timer mx53_evk_timer = {
 163         .init   = mx53_evk_timer_init,
 164 };
 165
 166 MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
 167         .map_io = mx53_map_io,
 168         .init_early = imx53_init_early,
 169         .init_irq = mx53_init_irq,
 170         .timer = &mx53_evk_timer,
 171         .init_machine = mx53_evk_board_init,
 172 MACHINE_END