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/fec.h>
  25 #include <linux/delay.h>
  26 #include <linux/gpio.h>
  27 #include <linux/spi/flash.h>
  28 #include <linux/spi/spi.h>
  29 #include <mach/common.h>
  30 #include <mach/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/time.h>
  34 #include <mach/imx-uart.h>
  35 #include <mach/iomux-mx53.h>
  36
  37 #define MX53_EVK_FEC_PHY_RST    IMX_GPIO_NR(7, 6)
  38 #define EVK_ECSPI1_CS0          IMX_GPIO_NR(2, 30)
  39 #define EVK_ECSPI1_CS1          IMX_GPIO_NR(3, 19)
  40
  41 #include "crm_regs.h"
  42 #include "devices-imx53.h"
  43
  44 static iomux_v3_cfg_t mx53_evk_pads[] = {
  45         MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
  46         MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,
  47
  48         MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
  49         MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
  50         MX53_PAD_PATA_DIOR__UART2_RTS,
  51         MX53_PAD_PATA_INTRQ__UART2_CTS,
  52
  53         MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
  54         MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
  55
  56         MX53_PAD_EIM_D16__ECSPI1_SCLK,
  57         MX53_PAD_EIM_D17__ECSPI1_MISO,
  58         MX53_PAD_EIM_D18__ECSPI1_MOSI,
  59
  60         /* ecspi chip select lines */
  61         MX53_PAD_EIM_EB2__GPIO2_30,
  62         MX53_PAD_EIM_D19__GPIO3_19,
  63 };
  64
  65 static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
  66         .flags = IMXUART_HAVE_RTSCTS,
  67 };
  68
  69 static inline void mx53_evk_init_uart(void)
  70 {
  71         imx53_add_imx_uart(0, NULL);
  72         imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
  73         imx53_add_imx_uart(2, NULL);
  74 }
  75
  76 static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
  77         .bitrate = 100000,
  78 };
  79
  80 static inline void mx53_evk_fec_reset(void)
  81 {
  82         int ret;
  83
  84         /* reset FEC PHY */
  85         ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
  86                                                         "fec-phy-reset");
  87         if (ret) {
  88                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
  89                 return;
  90         }
  91         msleep(1);
  92         gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
  93 }
  94
  95 static struct fec_platform_data mx53_evk_fec_pdata = {
  96         .phy = PHY_INTERFACE_MODE_RMII,
  97 };
  98
  99 static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
 100         {
 101                 .modalias = "mtd_dataflash",
 102                 .max_speed_hz = 25000000,
 103                 .bus_num = 0,
 104                 .chip_select = 1,
 105                 .mode = SPI_MODE_0,
 106                 .platform_data = NULL,
 107         },
 108 };
 109
 110 static int mx53_evk_spi_cs[] = {
 111         EVK_ECSPI1_CS0,
 112         EVK_ECSPI1_CS1,
 113 };
 114
 115 static const struct spi_imx_master mx53_evk_spi_data __initconst = {
 116         .chipselect     = mx53_evk_spi_cs,
 117         .num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
 118 };
 119
 120 static void __init mx53_evk_board_init(void)
 121 {
 122         mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
 123                                         ARRAY_SIZE(mx53_evk_pads));
 124         mx53_evk_init_uart();
 125         mx53_evk_fec_reset();
 126         imx53_add_fec(&mx53_evk_fec_pdata);
 127
 128         imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
 129         imx53_add_imx_i2c(1, &mx53_evk_i2c_data);
 130
 131         imx53_add_sdhci_esdhc_imx(0, NULL);
 132         imx53_add_sdhci_esdhc_imx(1, NULL);
 133
 134         spi_register_board_info(mx53_evk_spi_board_info,
 135                 ARRAY_SIZE(mx53_evk_spi_board_info));
 136         imx53_add_ecspi(0, &mx53_evk_spi_data);
 137         imx53_add_imx2_wdt(0, NULL);
 138 }
 139
 140 static void __init mx53_evk_timer_init(void)
 141 {
 142         mx53_clocks_init(32768, 24000000, 22579200, 0);
 143 }
 144
 145 static struct sys_timer mx53_evk_timer = {
 146         .init   = mx53_evk_timer_init,
 147 };
 148
 149 MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
 150         .map_io = mx53_map_io,
 151         .init_early = imx53_init_early,
 152         .init_irq = mx53_init_irq,
 153         .timer = &mx53_evk_timer,
 154         .init_machine = mx53_evk_board_init,
 155 MACHINE_END