arch/arm/mach-imx/mach-mx53_smd.c

   1 /*
   2  * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
   3  */
   4
   5 /*
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/gpio.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/hardware.h>
  28 #include <mach/iomux-mx53.h>
  29
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/time.h>
  33
  34 #include "devices-imx53.h"
  35
  36 #define SMD_FEC_PHY_RST         IMX_GPIO_NR(7, 6)
  37 #define MX53_SMD_SATA_PWR_EN    IMX_GPIO_NR(3, 3)
  38
  39 static iomux_v3_cfg_t mx53_smd_pads[] = {
  40         MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
  41         MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,
  42
  43         MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
  44         MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
  45
  46         MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
  47         MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
  48         MX53_PAD_PATA_DA_1__UART3_CTS,
  49         MX53_PAD_PATA_DA_2__UART3_RTS,
  50         /* I2C1 */
  51         MX53_PAD_CSI0_DAT8__I2C1_SDA,
  52         MX53_PAD_CSI0_DAT9__I2C1_SCL,
  53         /* SD1 */
  54         MX53_PAD_SD1_CMD__ESDHC1_CMD,
  55         MX53_PAD_SD1_CLK__ESDHC1_CLK,
  56         MX53_PAD_SD1_DATA0__ESDHC1_DAT0,
  57         MX53_PAD_SD1_DATA1__ESDHC1_DAT1,
  58         MX53_PAD_SD1_DATA2__ESDHC1_DAT2,
  59         MX53_PAD_SD1_DATA3__ESDHC1_DAT3,
  60         /* SD2 */
  61         MX53_PAD_SD2_CMD__ESDHC2_CMD,
  62         MX53_PAD_SD2_CLK__ESDHC2_CLK,
  63         MX53_PAD_SD2_DATA0__ESDHC2_DAT0,
  64         MX53_PAD_SD2_DATA1__ESDHC2_DAT1,
  65         MX53_PAD_SD2_DATA2__ESDHC2_DAT2,
  66         MX53_PAD_SD2_DATA3__ESDHC2_DAT3,
  67         /* SD3 */
  68         MX53_PAD_PATA_DATA8__ESDHC3_DAT0,
  69         MX53_PAD_PATA_DATA9__ESDHC3_DAT1,
  70         MX53_PAD_PATA_DATA10__ESDHC3_DAT2,
  71         MX53_PAD_PATA_DATA11__ESDHC3_DAT3,
  72         MX53_PAD_PATA_DATA0__ESDHC3_DAT4,
  73         MX53_PAD_PATA_DATA1__ESDHC3_DAT5,
  74         MX53_PAD_PATA_DATA2__ESDHC3_DAT6,
  75         MX53_PAD_PATA_DATA3__ESDHC3_DAT7,
  76         MX53_PAD_PATA_IORDY__ESDHC3_CLK,
  77         MX53_PAD_PATA_RESET_B__ESDHC3_CMD,
  78 };
  79
  80 static const struct imxuart_platform_data mx53_smd_uart_data __initconst = {
  81         .flags = IMXUART_HAVE_RTSCTS,
  82 };
  83
  84 static inline void mx53_smd_init_uart(void)
  85 {
  86         imx53_add_imx_uart(0, NULL);
  87         imx53_add_imx_uart(1, NULL);
  88         imx53_add_imx_uart(2, &mx53_smd_uart_data);
  89 }
  90
  91 static inline void mx53_smd_fec_reset(void)
  92 {
  93         int ret;
  94
  95         /* reset FEC PHY */
  96         ret = gpio_request(SMD_FEC_PHY_RST, "fec-phy-reset");
  97         if (ret) {
  98                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
  99                 return;
 100         }
 101         gpio_direction_output(SMD_FEC_PHY_RST, 0);
 102         msleep(1);
 103         gpio_set_value(SMD_FEC_PHY_RST, 1);
 104 }
 105
 106 static const struct fec_platform_data mx53_smd_fec_data __initconst = {
 107         .phy = PHY_INTERFACE_MODE_RMII,
 108 };
 109
 110 static const struct imxi2c_platform_data mx53_smd_i2c_data __initconst = {
 111         .bitrate = 100000,
 112 };
 113
 114 static inline void mx53_smd_ahci_pwr_on(void)
 115 {
 116         int ret;
 117
 118         /* Enable SATA PWR */
 119         ret = gpio_request_one(MX53_SMD_SATA_PWR_EN,
 120                         GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "ahci-sata-pwr");
 121         if (ret) {
 122                 pr_err("failed to enable SATA_PWR_EN: %d\n", ret);
 123                 return;
 124         }
 125 }
 126
 127 void __init imx53_smd_common_init(void)
 128 {
 129         mxc_iomux_v3_setup_multiple_pads(mx53_smd_pads,
 130                                          ARRAY_SIZE(mx53_smd_pads));
 131 }
 132
 133 static void __init mx53_smd_board_init(void)
 134 {
 135         imx53_soc_init();
 136         imx53_smd_common_init();
 137
 138         mx53_smd_init_uart();
 139         mx53_smd_fec_reset();
 140         imx53_add_fec(&mx53_smd_fec_data);
 141         imx53_add_imx2_wdt(0);
 142         imx53_add_imx_i2c(0, &mx53_smd_i2c_data);
 143         imx53_add_sdhci_esdhc_imx(0, NULL);
 144         imx53_add_sdhci_esdhc_imx(1, NULL);
 145         imx53_add_sdhci_esdhc_imx(2, NULL);
 146         mx53_smd_ahci_pwr_on();
 147         imx53_add_ahci_imx();
 148 }
 149
 150 static void __init mx53_smd_timer_init(void)
 151 {
 152         mx53_clocks_init(32768, 24000000, 22579200, 0);
 153 }
 154
 155 static struct sys_timer mx53_smd_timer = {
 156         .init   = mx53_smd_timer_init,
 157 };
 158
 159 MACHINE_START(MX53_SMD, "Freescale MX53 SMD Board")
 160         .map_io = mx53_map_io,
 161         .init_early = imx53_init_early,
 162         .init_irq = mx53_init_irq,
 163         .handle_irq = imx53_handle_irq,
 164         .timer = &mx53_smd_timer,
 165         .init_machine = mx53_smd_board_init,
 166         .init_late      = imx53_init_late,
 167         .restart        = mxc_restart,
 168 MACHINE_END