arch/arm/mach-imx/mach-mx1ads.c

   1 /*
   2  * arch/arm/mach-imx/mach-mx1ads.c
   3  *
   4  * Initially based on:
   5  *      linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
   6  *      Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
   7  *
   8  * 2004 (c) MontaVista Software, Inc.
   9  *
  10  * This file is licensed under the terms of the GNU General Public
  11  * License version 2. This program is licensed "as is" without any
  12  * warranty of any kind, whether express or implied.
  13  */
  14
  15 #include <linux/i2c.h>
  16 #include <linux/i2c/pcf857x.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/mtd/physmap.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/time.h>
  25
  26 #include "common.h"
  27 #include "devices-imx1.h"
  28 #include "hardware.h"
  29 #include "iomux-mx1.h"
  30
  31 static const int mx1ads_pins[] __initconst = {
  32         /* UART1 */
  33         PC9_PF_UART1_CTS,
  34         PC10_PF_UART1_RTS,
  35         PC11_PF_UART1_TXD,
  36         PC12_PF_UART1_RXD,
  37         /* UART2 */
  38         PB28_PF_UART2_CTS,
  39         PB29_PF_UART2_RTS,
  40         PB30_PF_UART2_TXD,
  41         PB31_PF_UART2_RXD,
  42         /* I2C */
  43         PA15_PF_I2C_SDA,
  44         PA16_PF_I2C_SCL,
  45         /* SPI */
  46         PC13_PF_SPI1_SPI_RDY,
  47         PC14_PF_SPI1_SCLK,
  48         PC15_PF_SPI1_SS,
  49         PC16_PF_SPI1_MISO,
  50         PC17_PF_SPI1_MOSI,
  51 };
  52
  53 /*
  54  * UARTs platform data
  55  */
  56
  57 static const struct imxuart_platform_data uart0_pdata __initconst = {
  58         .flags = IMXUART_HAVE_RTSCTS,
  59 };
  60
  61 static const struct imxuart_platform_data uart1_pdata __initconst = {
  62         .flags = IMXUART_HAVE_RTSCTS,
  63 };
  64
  65 /*
  66  * Physmap flash
  67  */
  68
  69 static const struct physmap_flash_data mx1ads_flash_data __initconst = {
  70         .width          = 4,            /* bankwidth in bytes */
  71 };
  72
  73 static const struct resource flash_resource __initconst = {
  74         .start  = MX1_CS0_PHYS,
  75         .end    = MX1_CS0_PHYS + SZ_32M - 1,
  76         .flags  = IORESOURCE_MEM,
  77 };
  78
  79 /*
  80  * I2C
  81  */
  82 static struct pcf857x_platform_data pcf857x_data[] = {
  83         {
  84                 .gpio_base = 4 * 32,
  85         }, {
  86                 .gpio_base = 4 * 32 + 16,
  87         }
  88 };
  89
  90 static const struct imxi2c_platform_data mx1ads_i2c_data __initconst = {
  91         .bitrate = 100000,
  92 };
  93
  94 static struct i2c_board_info mx1ads_i2c_devices[] = {
  95         {
  96                 I2C_BOARD_INFO("pcf8575", 0x22),
  97                 .platform_data = &pcf857x_data[0],
  98         }, {
  99                 I2C_BOARD_INFO("pcf8575", 0x24),
 100                 .platform_data = &pcf857x_data[1],
 101         },
 102 };
 103
 104 /*
 105  * Board init
 106  */
 107 static void __init mx1ads_init(void)
 108 {
 109         imx1_soc_init();
 110
 111         mxc_gpio_setup_multiple_pins(mx1ads_pins,
 112                 ARRAY_SIZE(mx1ads_pins), "mx1ads");
 113
 114         /* UART */
 115         imx1_add_imx_uart0(&uart0_pdata);
 116         imx1_add_imx_uart1(&uart1_pdata);
 117
 118         /* Physmap flash */
 119         platform_device_register_resndata(NULL, "physmap-flash", 0,
 120                         &flash_resource, 1,
 121                         &mx1ads_flash_data, sizeof(mx1ads_flash_data));
 122
 123         /* I2C */
 124         i2c_register_board_info(0, mx1ads_i2c_devices,
 125                                 ARRAY_SIZE(mx1ads_i2c_devices));
 126
 127         imx1_add_imx_i2c(&mx1ads_i2c_data);
 128 }
 129
 130 static void __init mx1ads_timer_init(void)
 131 {
 132         mx1_clocks_init(32000);
 133 }
 134
 135 MACHINE_START(MX1ADS, "Freescale MX1ADS")
 136         /* Maintainer: Sascha Hauer, Pengutronix */
 137         .atag_offset = 0x100,
 138         .map_io = mx1_map_io,
 139         .init_early = imx1_init_early,
 140         .init_irq = mx1_init_irq,
 141         .init_time      = mx1ads_timer_init,
 142         .init_machine = mx1ads_init,
 143         .restart        = mxc_restart,
 144 MACHINE_END
 145
 146 MACHINE_START(MXLADS, "Freescale MXLADS")
 147         .atag_offset = 0x100,
 148         .map_io = mx1_map_io,
 149         .init_early = imx1_init_early,
 150         .init_irq = mx1_init_irq,
 151         .init_time      = mx1ads_timer_init,
 152         .init_machine = mx1ads_init,
 153         .restart        = mxc_restart,
 154 MACHINE_END