arch/arm/mach-mx2/pcm038.c

   1 /*
   2  * Copyright 2007 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
   3  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17  * MA 02110-1301, USA.
  18  */
  19
  20 #include <linux/i2c.h>
  21 #include <linux/i2c/at24.h>
  22 #include <linux/io.h>
  23 #include <linux/mtd/plat-ram.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/platform_device.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/time.h>
  30
  31 #include <mach/board-pcm038.h>
  32 #include <mach/common.h>
  33 #include <mach/hardware.h>
  34 #include <mach/i2c.h>
  35 #include <mach/iomux.h>
  36 #include <mach/imx-uart.h>
  37 #include <mach/mxc_nand.h>
  38
  39 #include "devices.h"
  40
  41 static int pcm038_pins[] = {
  42         /* UART1 */
  43         PE12_PF_UART1_TXD,
  44         PE13_PF_UART1_RXD,
  45         PE14_PF_UART1_CTS,
  46         PE15_PF_UART1_RTS,
  47         /* UART2 */
  48         PE3_PF_UART2_CTS,
  49         PE4_PF_UART2_RTS,
  50         PE6_PF_UART2_TXD,
  51         PE7_PF_UART2_RXD,
  52         /* UART3 */
  53         PE8_PF_UART3_TXD,
  54         PE9_PF_UART3_RXD,
  55         PE10_PF_UART3_CTS,
  56         PE11_PF_UART3_RTS,
  57         /* FEC */
  58         PD0_AIN_FEC_TXD0,
  59         PD1_AIN_FEC_TXD1,
  60         PD2_AIN_FEC_TXD2,
  61         PD3_AIN_FEC_TXD3,
  62         PD4_AOUT_FEC_RX_ER,
  63         PD5_AOUT_FEC_RXD1,
  64         PD6_AOUT_FEC_RXD2,
  65         PD7_AOUT_FEC_RXD3,
  66         PD8_AF_FEC_MDIO,
  67         PD9_AIN_FEC_MDC,
  68         PD10_AOUT_FEC_CRS,
  69         PD11_AOUT_FEC_TX_CLK,
  70         PD12_AOUT_FEC_RXD0,
  71         PD13_AOUT_FEC_RX_DV,
  72         PD14_AOUT_FEC_RX_CLK,
  73         PD15_AOUT_FEC_COL,
  74         PD16_AIN_FEC_TX_ER,
  75         PF23_AIN_FEC_TX_EN,
  76         /* I2C2 */
  77         PC5_PF_I2C2_SDA,
  78         PC6_PF_I2C2_SCL,
  79         /* SPI1 */
  80         PD25_PF_CSPI1_RDY,
  81         PD27_PF_CSPI1_SS1,
  82         PD28_PF_CSPI1_SS0,
  83         PD29_PF_CSPI1_SCLK,
  84         PD30_PF_CSPI1_MISO,
  85         PD31_PF_CSPI1_MOSI,
  86         /* SSI1 */
  87         PC20_PF_SSI1_FS,
  88         PC21_PF_SSI1_RXD,
  89         PC22_PF_SSI1_TXD,
  90         PC23_PF_SSI1_CLK,
  91         /* SSI4 */
  92         PC16_PF_SSI4_FS,
  93         PC17_PF_SSI4_RXD,
  94         PC18_PF_SSI4_TXD,
  95         PC19_PF_SSI4_CLK,
  96 };
  97
  98 /*
  99  * Phytec's PCM038 comes with 2MiB battery buffered SRAM,
 100  * 16 bit width
 101  */
 102
 103 static struct platdata_mtd_ram pcm038_sram_data = {
 104         .bankwidth = 2,
 105 };
 106
 107 static struct resource pcm038_sram_resource = {
 108         .start = CS1_BASE_ADDR,
 109         .end   = CS1_BASE_ADDR + 512 * 1024 - 1,
 110         .flags = IORESOURCE_MEM,
 111 };
 112
 113 static struct platform_device pcm038_sram_mtd_device = {
 114         .name = "mtd-ram",
 115         .id = 0,
 116         .dev = {
 117                 .platform_data = &pcm038_sram_data,
 118         },
 119         .num_resources = 1,
 120         .resource = &pcm038_sram_resource,
 121 };
 122
 123 /*
 124  * Phytec's phyCORE-i.MX27 comes with 32MiB flash,
 125  * 16 bit width
 126  */
 127 static struct physmap_flash_data pcm038_flash_data = {
 128         .width = 2,
 129 };
 130
 131 static struct resource pcm038_flash_resource = {
 132         .start = 0xc0000000,
 133         .end   = 0xc1ffffff,
 134         .flags = IORESOURCE_MEM,
 135 };
 136
 137 static struct platform_device pcm038_nor_mtd_device = {
 138         .name = "physmap-flash",
 139         .id = 0,
 140         .dev = {
 141                 .platform_data = &pcm038_flash_data,
 142         },
 143         .num_resources = 1,
 144         .resource = &pcm038_flash_resource,
 145 };
 146
 147 static struct imxuart_platform_data uart_pdata[] = {
 148         {
 149                 .flags = IMXUART_HAVE_RTSCTS,
 150         }, {
 151                 .flags = IMXUART_HAVE_RTSCTS,
 152         }, {
 153                 .flags = IMXUART_HAVE_RTSCTS,
 154         },
 155 };
 156
 157 static struct mxc_nand_platform_data pcm038_nand_board_info = {
 158         .width = 1,
 159         .hw_ecc = 1,
 160 };
 161
 162 static struct platform_device *platform_devices[] __initdata = {
 163         &pcm038_nor_mtd_device,
 164         &mxc_w1_master_device,
 165         &mxc_fec_device,
 166         &pcm038_sram_mtd_device,
 167 };
 168
 169 /* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
 170  * setup other stuffs to access the sram. */
 171 static void __init pcm038_init_sram(void)
 172 {
 173         __raw_writel(0x0000d843, CSCR_U(1));
 174         __raw_writel(0x22252521, CSCR_L(1));
 175         __raw_writel(0x22220a00, CSCR_A(1));
 176 }
 177
 178 static struct imxi2c_platform_data pcm038_i2c_1_data = {
 179         .bitrate = 100000,
 180 };
 181
 182 static struct at24_platform_data board_eeprom = {
 183         .byte_len = 4096,
 184         .page_size = 32,
 185         .flags = AT24_FLAG_ADDR16,
 186 };
 187
 188 static struct i2c_board_info pcm038_i2c_devices[] = {
 189         {
 190                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 191                 .platform_data = &board_eeprom,
 192         }, {
 193                 I2C_BOARD_INFO("pcf8563", 0x51),
 194         }, {
 195                 I2C_BOARD_INFO("lm75", 0x4a),
 196         }
 197 };
 198
 199 static void __init pcm038_init(void)
 200 {
 201         mxc_gpio_setup_multiple_pins(pcm038_pins, ARRAY_SIZE(pcm038_pins),
 202                         "PCM038");
 203
 204         pcm038_init_sram();
 205
 206         mxc_register_device(&mxc_uart_device0, &uart_pdata[0]);
 207         mxc_register_device(&mxc_uart_device1, &uart_pdata[1]);
 208         mxc_register_device(&mxc_uart_device2, &uart_pdata[2]);
 209
 210         mxc_gpio_mode(PE16_AF_OWIRE);
 211         mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
 212
 213         /* only the i2c master 1 is used on this CPU card */
 214         i2c_register_board_info(1, pcm038_i2c_devices,
 215                                 ARRAY_SIZE(pcm038_i2c_devices));
 216
 217         mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
 218
 219         /* PE18 for user-LED D40 */
 220         mxc_gpio_mode(GPIO_PORTE | 18 | GPIO_GPIO | GPIO_OUT);
 221
 222         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 223
 224 #ifdef CONFIG_MACH_PCM970_BASEBOARD
 225         pcm970_baseboard_init();
 226 #endif
 227 }
 228
 229 static void __init pcm038_timer_init(void)
 230 {
 231         mx27_clocks_init(26000000);
 232 }
 233
 234 static struct sys_timer pcm038_timer = {
 235         .init = pcm038_timer_init,
 236 };
 237
 238 MACHINE_START(PCM038, "phyCORE-i.MX27")
 239         .phys_io        = AIPI_BASE_ADDR,
 240         .io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 241         .boot_params    = PHYS_OFFSET + 0x100,
 242         .map_io         = mx27_map_io,
 243         .init_irq       = mx27_init_irq,
 244         .init_machine   = pcm038_init,
 245         .timer          = &pcm038_timer,
 246 MACHINE_END