arch/arm/mach-mx5/board-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/fec.h>
  24 #include <linux/delay.h>
  25 #include <linux/gpio.h>
  26
  27 #include <mach/common.h>
  28 #include <mach/hardware.h>
  29 #include <mach/imx-uart.h>
  30 #include <mach/iomux-mx53.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/time.h>
  35
  36 #include "crm_regs.h"
  37 #include "devices-imx53.h"
  38
  39 #define SMD_FEC_PHY_RST         IMX_GPIO_NR(7, 6)
  40
  41 static iomux_v3_cfg_t mx53_smd_pads[] = {
  42         MX53_PAD_CSI0_D10__UART1_TXD,
  43         MX53_PAD_CSI0_D11__UART1_RXD,
  44         MX53_PAD_ATA_DIOW__UART1_TXD,
  45         MX53_PAD_ATA_DMACK__UART1_RXD,
  46
  47         MX53_PAD_ATA_BUFFER_EN__UART2_RXD,
  48         MX53_PAD_ATA_DMARQ__UART2_TXD,
  49         MX53_PAD_ATA_DIOR__UART2_RTS,
  50         MX53_PAD_ATA_INTRQ__UART2_CTS,
  51
  52         MX53_PAD_ATA_CS_0__UART3_TXD,
  53         MX53_PAD_ATA_CS_1__UART3_RXD,
  54         MX53_PAD_ATA_DA_1__UART3_CTS,
  55         MX53_PAD_ATA_DA_2__UART3_RTS,
  56 };
  57
  58 static const struct imxuart_platform_data mx53_smd_uart_data __initconst = {
  59         .flags = IMXUART_HAVE_RTSCTS,
  60 };
  61
  62 static inline void mx53_smd_init_uart(void)
  63 {
  64         imx53_add_imx_uart(0, &mx53_smd_uart_data);
  65         imx53_add_imx_uart(1, &mx53_smd_uart_data);
  66         imx53_add_imx_uart(2, &mx53_smd_uart_data);
  67 }
  68
  69 static inline void mx53_smd_fec_reset(void)
  70 {
  71         int ret;
  72
  73         /* reset FEC PHY */
  74         ret = gpio_request(SMD_FEC_PHY_RST, "fec-phy-reset");
  75         if (ret) {
  76                 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
  77                 return;
  78         }
  79         gpio_direction_output(SMD_FEC_PHY_RST, 0);
  80         msleep(1);
  81         gpio_set_value(SMD_FEC_PHY_RST, 1);
  82 }
  83
  84 static struct fec_platform_data mx53_smd_fec_data = {
  85         .phy = PHY_INTERFACE_MODE_RMII,
  86 };
  87
  88 static void __init mx53_smd_board_init(void)
  89 {
  90         mxc_iomux_v3_setup_multiple_pads(mx53_smd_pads,
  91                                         ARRAY_SIZE(mx53_smd_pads));
  92         mx53_smd_init_uart();
  93         mx53_smd_fec_reset();
  94         imx53_add_fec(&mx53_smd_fec_data);
  95 }
  96
  97 static void __init mx53_smd_timer_init(void)
  98 {
  99         mx53_clocks_init(32768, 24000000, 22579200, 0);
 100 }
 101
 102 static struct sys_timer mx53_smd_timer = {
 103         .init   = mx53_smd_timer_init,
 104 };
 105
 106 MACHINE_START(MX53_SMD, "Freescale MX53 SMD Board")
 107         .map_io = mx53_map_io,
 108         .init_irq = mx53_init_irq,
 109         .init_machine = mx53_smd_board_init,
 110         .timer = &mx53_smd_timer,
 111 MACHINE_END