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 #include <linux/regulator/machine.h>
  27 #include <linux/mfd/mc13783.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/irq.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/time.h>
  34
  35 #include <mach/board-pcm038.h>
  36 #include <mach/common.h>
  37 #include <mach/hardware.h>
  38 #include <mach/i2c.h>
  39 #include <mach/iomux.h>
  40 #include <mach/imx-uart.h>
  41 #include <mach/mxc_nand.h>
  42 #include <mach/spi.h>
  43
  44 #include "devices.h"
  45
  46 static int pcm038_pins[] = {
  47         /* UART1 */
  48         PE12_PF_UART1_TXD,
  49         PE13_PF_UART1_RXD,
  50         PE14_PF_UART1_CTS,
  51         PE15_PF_UART1_RTS,
  52         /* UART2 */
  53         PE3_PF_UART2_CTS,
  54         PE4_PF_UART2_RTS,
  55         PE6_PF_UART2_TXD,
  56         PE7_PF_UART2_RXD,
  57         /* UART3 */
  58         PE8_PF_UART3_TXD,
  59         PE9_PF_UART3_RXD,
  60         PE10_PF_UART3_CTS,
  61         PE11_PF_UART3_RTS,
  62         /* FEC */
  63         PD0_AIN_FEC_TXD0,
  64         PD1_AIN_FEC_TXD1,
  65         PD2_AIN_FEC_TXD2,
  66         PD3_AIN_FEC_TXD3,
  67         PD4_AOUT_FEC_RX_ER,
  68         PD5_AOUT_FEC_RXD1,
  69         PD6_AOUT_FEC_RXD2,
  70         PD7_AOUT_FEC_RXD3,
  71         PD8_AF_FEC_MDIO,
  72         PD9_AIN_FEC_MDC,
  73         PD10_AOUT_FEC_CRS,
  74         PD11_AOUT_FEC_TX_CLK,
  75         PD12_AOUT_FEC_RXD0,
  76         PD13_AOUT_FEC_RX_DV,
  77         PD14_AOUT_FEC_RX_CLK,
  78         PD15_AOUT_FEC_COL,
  79         PD16_AIN_FEC_TX_ER,
  80         PF23_AIN_FEC_TX_EN,
  81         /* I2C2 */
  82         PC5_PF_I2C2_SDA,
  83         PC6_PF_I2C2_SCL,
  84         /* SPI1 */
  85         PD25_PF_CSPI1_RDY,
  86         PD29_PF_CSPI1_SCLK,
  87         PD30_PF_CSPI1_MISO,
  88         PD31_PF_CSPI1_MOSI,
  89         /* SSI1 */
  90         PC20_PF_SSI1_FS,
  91         PC21_PF_SSI1_RXD,
  92         PC22_PF_SSI1_TXD,
  93         PC23_PF_SSI1_CLK,
  94         /* SSI4 */
  95         PC16_PF_SSI4_FS,
  96         PC17_PF_SSI4_RXD,
  97         PC18_PF_SSI4_TXD,
  98         PC19_PF_SSI4_CLK,
  99 };
 100
 101 /*
 102  * Phytec's PCM038 comes with 2MiB battery buffered SRAM,
 103  * 16 bit width
 104  */
 105
 106 static struct platdata_mtd_ram pcm038_sram_data = {
 107         .bankwidth = 2,
 108 };
 109
 110 static struct resource pcm038_sram_resource = {
 111         .start = CS1_BASE_ADDR,
 112         .end   = CS1_BASE_ADDR + 512 * 1024 - 1,
 113         .flags = IORESOURCE_MEM,
 114 };
 115
 116 static struct platform_device pcm038_sram_mtd_device = {
 117         .name = "mtd-ram",
 118         .id = 0,
 119         .dev = {
 120                 .platform_data = &pcm038_sram_data,
 121         },
 122         .num_resources = 1,
 123         .resource = &pcm038_sram_resource,
 124 };
 125
 126 /*
 127  * Phytec's phyCORE-i.MX27 comes with 32MiB flash,
 128  * 16 bit width
 129  */
 130 static struct physmap_flash_data pcm038_flash_data = {
 131         .width = 2,
 132 };
 133
 134 static struct resource pcm038_flash_resource = {
 135         .start = 0xc0000000,
 136         .end   = 0xc1ffffff,
 137         .flags = IORESOURCE_MEM,
 138 };
 139
 140 static struct platform_device pcm038_nor_mtd_device = {
 141         .name = "physmap-flash",
 142         .id = 0,
 143         .dev = {
 144                 .platform_data = &pcm038_flash_data,
 145         },
 146         .num_resources = 1,
 147         .resource = &pcm038_flash_resource,
 148 };
 149
 150 static struct imxuart_platform_data uart_pdata[] = {
 151         {
 152                 .flags = IMXUART_HAVE_RTSCTS,
 153         }, {
 154                 .flags = IMXUART_HAVE_RTSCTS,
 155         }, {
 156                 .flags = IMXUART_HAVE_RTSCTS,
 157         },
 158 };
 159
 160 static struct mxc_nand_platform_data pcm038_nand_board_info = {
 161         .width = 1,
 162         .hw_ecc = 1,
 163 };
 164
 165 static struct platform_device *platform_devices[] __initdata = {
 166         &pcm038_nor_mtd_device,
 167         &mxc_w1_master_device,
 168         &mxc_fec_device,
 169         &pcm038_sram_mtd_device,
 170 };
 171
 172 /* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
 173  * setup other stuffs to access the sram. */
 174 static void __init pcm038_init_sram(void)
 175 {
 176         __raw_writel(0x0000d843, CSCR_U(1));
 177         __raw_writel(0x22252521, CSCR_L(1));
 178         __raw_writel(0x22220a00, CSCR_A(1));
 179 }
 180
 181 static struct imxi2c_platform_data pcm038_i2c_1_data = {
 182         .bitrate = 100000,
 183 };
 184
 185 static struct at24_platform_data board_eeprom = {
 186         .byte_len = 4096,
 187         .page_size = 32,
 188         .flags = AT24_FLAG_ADDR16,
 189 };
 190
 191 static struct i2c_board_info pcm038_i2c_devices[] = {
 192         {
 193                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 194                 .platform_data = &board_eeprom,
 195         }, {
 196                 I2C_BOARD_INFO("pcf8563", 0x51),
 197         }, {
 198                 I2C_BOARD_INFO("lm75", 0x4a),
 199         }
 200 };
 201
 202 static int pcm038_spi_cs[] = {GPIO_PORTD + 28};
 203
 204 static struct spi_imx_master pcm038_spi_0_data = {
 205         .chipselect = pcm038_spi_cs,
 206         .num_chipselect = ARRAY_SIZE(pcm038_spi_cs),
 207 };
 208
 209 static struct regulator_consumer_supply sdhc1_consumers[] = {
 210         {
 211                 .dev    = &mxc_sdhc_device1.dev,
 212                 .supply = "sdhc_vcc",
 213         },
 214 };
 215
 216 static struct regulator_init_data sdhc1_data = {
 217         .constraints = {
 218                 .min_uV = 3000000,
 219                 .max_uV = 3400000,
 220                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 221                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 222                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 223                         REGULATOR_MODE_FAST,
 224                 .always_on = 0,
 225                 .boot_on = 0,
 226         },
 227         .num_consumer_supplies = ARRAY_SIZE(sdhc1_consumers),
 228         .consumer_supplies = sdhc1_consumers,
 229 };
 230
 231 static struct regulator_consumer_supply cam_consumers[] = {
 232         {
 233                 .dev    = NULL,
 234                 .supply = "imx_cam_vcc",
 235         },
 236 };
 237
 238 static struct regulator_init_data cam_data = {
 239         .constraints = {
 240                 .min_uV = 3000000,
 241                 .max_uV = 3400000,
 242                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 243                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 244                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 245                         REGULATOR_MODE_FAST,
 246                 .always_on = 0,
 247                 .boot_on = 0,
 248         },
 249         .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
 250         .consumer_supplies = cam_consumers,
 251 };
 252
 253 struct mc13783_regulator_init_data pcm038_regulators[] = {
 254         {
 255                 .id = MC13783_REGU_VCAM,
 256                 .init_data = &cam_data,
 257         }, {
 258                 .id = MC13783_REGU_VMMC1,
 259                 .init_data = &sdhc1_data,
 260         },
 261 };
 262
 263 static struct mc13783_platform_data pcm038_pmic = {
 264         .regulators = pcm038_regulators,
 265         .num_regulators = ARRAY_SIZE(pcm038_regulators),
 266         .flags = MC13783_USE_ADC | MC13783_USE_REGULATOR |
 267                  MC13783_USE_TOUCHSCREEN,
 268 };
 269
 270 static struct spi_board_info pcm038_spi_board_info[] __initdata = {
 271         {
 272                 .modalias = "mc13783",
 273                 .irq = IRQ_GPIOB(23),
 274                 .max_speed_hz = 300000,
 275                 .bus_num = 0,
 276                 .chip_select = 0,
 277                 .platform_data = &pcm038_pmic,
 278                 .mode = SPI_CS_HIGH,
 279         }
 280 };
 281
 282 static void __init pcm038_init(void)
 283 {
 284         mxc_gpio_setup_multiple_pins(pcm038_pins, ARRAY_SIZE(pcm038_pins),
 285                         "PCM038");
 286
 287         pcm038_init_sram();
 288
 289         mxc_register_device(&mxc_uart_device0, &uart_pdata[0]);
 290         mxc_register_device(&mxc_uart_device1, &uart_pdata[1]);
 291         mxc_register_device(&mxc_uart_device2, &uart_pdata[2]);
 292
 293         mxc_gpio_mode(PE16_AF_OWIRE);
 294         mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
 295
 296         /* only the i2c master 1 is used on this CPU card */
 297         i2c_register_board_info(1, pcm038_i2c_devices,
 298                                 ARRAY_SIZE(pcm038_i2c_devices));
 299
 300         mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
 301
 302         /* PE18 for user-LED D40 */
 303         mxc_gpio_mode(GPIO_PORTE | 18 | GPIO_GPIO | GPIO_OUT);
 304
 305         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 306
 307         /* MC13783 IRQ */
 308         mxc_gpio_mode(GPIO_PORTB | 23 | GPIO_GPIO | GPIO_IN);
 309
 310         mxc_register_device(&mxc_spi_device0, &pcm038_spi_0_data);
 311         spi_register_board_info(pcm038_spi_board_info,
 312                                 ARRAY_SIZE(pcm038_spi_board_info));
 313
 314         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 315
 316 #ifdef CONFIG_MACH_PCM970_BASEBOARD
 317         pcm970_baseboard_init();
 318 #endif
 319 }
 320
 321 static void __init pcm038_timer_init(void)
 322 {
 323         mx27_clocks_init(26000000);
 324 }
 325
 326 static struct sys_timer pcm038_timer = {
 327         .init = pcm038_timer_init,
 328 };
 329
 330 MACHINE_START(PCM038, "phyCORE-i.MX27")
 331         .phys_io        = AIPI_BASE_ADDR,
 332         .io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 333         .boot_params    = PHYS_OFFSET + 0x100,
 334         .map_io         = mx27_map_io,
 335         .init_irq       = mx27_init_irq,
 336         .init_machine   = pcm038_init,
 337         .timer          = &pcm038_timer,
 338 MACHINE_END