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
  39 #include "crm_regs.h"
  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 };
  62
  63 static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
  64         .flags = IMXUART_HAVE_RTSCTS,
  65 };
  66
  67 static inline void mx53_evk_init_uart(void)
  68 {
  69         imx53_add_imx_uart(0, NULL);
  70         imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
  71         imx53_add_imx_uart(2, NULL);
  72 }
  73
  74 static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
  75         .bitrate = 100000,
  76 };
  77
  78 static inline void mx53_evk_fec_reset(void)
  79 {
  80         int ret;
  81
  82         /* reset FEC PHY */
  83         ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
  84                                                         "fec-phy-reset");
  85         if (ret) {
  86                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
  87                 return;
  88         }
  89         msleep(1);
  90         gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
  91 }
  92
  93 static struct fec_platform_data mx53_evk_fec_pdata = {
  94         .phy = PHY_INTERFACE_MODE_RMII,
  95 };
  96
  97 static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
  98         {
  99                 .modalias = "mtd_dataflash",
 100                 .max_speed_hz = 25000000,
 101                 .bus_num = 0,
 102                 .chip_select = 1,
 103                 .mode = SPI_MODE_0,
 104                 .platform_data = NULL,
 105         },
 106 };
 107
 108 static int mx53_evk_spi_cs[] = {
 109         EVK_ECSPI1_CS0,
 110         EVK_ECSPI1_CS1,
 111 };
 112
 113 static const struct spi_imx_master mx53_evk_spi_data __initconst = {
 114         .chipselect     = mx53_evk_spi_cs,
 115         .num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
 116 };
 117
 118 static void __init mx53_evk_board_init(void)
 119 {
 120         mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
 121                                         ARRAY_SIZE(mx53_evk_pads));
 122         mx53_evk_init_uart();
 123         mx53_evk_fec_reset();
 124         imx53_add_fec(&mx53_evk_fec_pdata);
 125
 126         imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
 127         imx53_add_imx_i2c(1, &mx53_evk_i2c_data);
 128
 129         imx53_add_sdhci_esdhc_imx(0, NULL);
 130         imx53_add_sdhci_esdhc_imx(1, NULL);
 131
 132         spi_register_board_info(mx53_evk_spi_board_info,
 133                 ARRAY_SIZE(mx53_evk_spi_board_info));
 134         imx53_add_ecspi(0, &mx53_evk_spi_data);
 135         imx53_add_imx2_wdt(0, NULL);
 136 }
 137
 138 static void __init mx53_evk_timer_init(void)
 139 {
 140         mx53_clocks_init(32768, 24000000, 22579200, 0);
 141 }
 142
 143 static struct sys_timer mx53_evk_timer = {
 144         .init   = mx53_evk_timer_init,
 145 };
 146
 147 MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
 148         .map_io = mx53_map_io,
 149         .init_early = imx53_init_early,
 150         .init_irq = mx53_init_irq,
 151         .timer = &mx53_evk_timer,
 152         .init_machine = mx53_evk_board_init,
 153 MACHINE_END