arch/arm/mach-mx25/mx25pdk.c

   1 /*
   2  * Copyright 2009 Sascha Hauer, <kernel@pengutronix.de>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16  * Boston, MA  02110-1301, USA.
  17  */
  18
  19 #include <linux/types.h>
  20 #include <linux/init.h>
  21 #include <linux/delay.h>
  22 #include <linux/clk.h>
  23 #include <linux/irq.h>
  24 #include <linux/gpio.h>
  25 #include <linux/fec.h>
  26 #include <linux/platform_device.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/time.h>
  32 #include <asm/memory.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/common.h>
  35 #include <mach/imx-uart.h>
  36 #include <mach/mx25.h>
  37 #include <mach/mxc_nand.h>
  38 #include "devices.h"
  39 #include <mach/iomux.h>
  40
  41 static struct imxuart_platform_data uart_pdata = {
  42         .flags = IMXUART_HAVE_RTSCTS,
  43 };
  44
  45 static struct pad_desc mx25pdk_pads[] = {
  46         MX25_PAD_FEC_MDC__FEC_MDC,
  47         MX25_PAD_FEC_MDIO__FEC_MDIO,
  48         MX25_PAD_FEC_TDATA0__FEC_TDATA0,
  49         MX25_PAD_FEC_TDATA1__FEC_TDATA1,
  50         MX25_PAD_FEC_TX_EN__FEC_TX_EN,
  51         MX25_PAD_FEC_RDATA0__FEC_RDATA0,
  52         MX25_PAD_FEC_RDATA1__FEC_RDATA1,
  53         MX25_PAD_FEC_RX_DV__FEC_RX_DV,
  54         MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
  55         MX25_PAD_A17__GPIO_2_3, /* FEC_EN, GPIO 35 */
  56         MX25_PAD_D12__GPIO_4_8, /* FEC_RESET_B, GPIO 104 */
  57 };
  58
  59 static struct fec_platform_data mx25_fec_pdata = {
  60         .phy    = PHY_INTERFACE_MODE_RMII,
  61 };
  62
  63 #define FEC_ENABLE_GPIO         35
  64 #define FEC_RESET_B_GPIO        104
  65
  66 static void __init mx25pdk_fec_reset(void)
  67 {
  68         gpio_request(FEC_ENABLE_GPIO, "FEC PHY enable");
  69         gpio_request(FEC_RESET_B_GPIO, "FEC PHY reset");
  70
  71         gpio_direction_output(FEC_ENABLE_GPIO, 0);  /* drop PHY power */
  72         gpio_direction_output(FEC_RESET_B_GPIO, 0); /* assert reset */
  73         udelay(2);
  74
  75         /* turn on PHY power and lift reset */
  76         gpio_set_value(FEC_ENABLE_GPIO, 1);
  77         gpio_set_value(FEC_RESET_B_GPIO, 1);
  78 }
  79
  80 static void __init mx25pdk_init(void)
  81 {
  82         mxc_iomux_v3_setup_multiple_pads(mx25pdk_pads,
  83                         ARRAY_SIZE(mx25pdk_pads));
  84
  85         mxc_register_device(&mxc_uart_device0, &uart_pdata);
  86         mxc_register_device(&mxc_usbh2, NULL);
  87
  88         mx25pdk_fec_reset();
  89         mxc_register_device(&mx25_fec_device, &mx25_fec_pdata);
  90 }
  91
  92 static void __init mx25pdk_timer_init(void)
  93 {
  94         mx25_clocks_init();
  95 }
  96
  97 static struct sys_timer mx25pdk_timer = {
  98         .init   = mx25pdk_timer_init,
  99 };
 100
 101 MACHINE_START(MX25_3DS, "Freescale MX25PDK (3DS)")
 102         /* Maintainer: Freescale Semiconductor, Inc. */
 103         .phys_io        = MX25_AIPS1_BASE_ADDR,
 104         .io_pg_offst    = ((MX25_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 105         .boot_params    = PHYS_OFFSET + 0x100,
 106         .map_io         = mx25_map_io,
 107         .init_irq       = mx25_init_irq,
 108         .init_machine   = mx25pdk_init,
 109         .timer          = &mx25pdk_timer,
 110 MACHINE_END
 111