arch/arm/mach-imx/mach-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 #include <linux/gpio.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/time.h>
  35
  36 #include "board-pcm038.h"
  37 #include "common.h"
  38 #include "devices-imx27.h"
  39 #include "hardware.h"
  40 #include "iomux-mx27.h"
  41 #include "ulpi.h"
  42
  43 static const int pcm038_pins[] __initconst = {
  44         /* UART1 */
  45         PE12_PF_UART1_TXD,
  46         PE13_PF_UART1_RXD,
  47         PE14_PF_UART1_CTS,
  48         PE15_PF_UART1_RTS,
  49         /* UART2 */
  50         PE3_PF_UART2_CTS,
  51         PE4_PF_UART2_RTS,
  52         PE6_PF_UART2_TXD,
  53         PE7_PF_UART2_RXD,
  54         /* UART3 */
  55         PE8_PF_UART3_TXD,
  56         PE9_PF_UART3_RXD,
  57         PE10_PF_UART3_CTS,
  58         PE11_PF_UART3_RTS,
  59         /* FEC */
  60         PD0_AIN_FEC_TXD0,
  61         PD1_AIN_FEC_TXD1,
  62         PD2_AIN_FEC_TXD2,
  63         PD3_AIN_FEC_TXD3,
  64         PD4_AOUT_FEC_RX_ER,
  65         PD5_AOUT_FEC_RXD1,
  66         PD6_AOUT_FEC_RXD2,
  67         PD7_AOUT_FEC_RXD3,
  68         PD8_AF_FEC_MDIO,
  69         PD9_AIN_FEC_MDC,
  70         PD10_AOUT_FEC_CRS,
  71         PD11_AOUT_FEC_TX_CLK,
  72         PD12_AOUT_FEC_RXD0,
  73         PD13_AOUT_FEC_RX_DV,
  74         PD14_AOUT_FEC_RX_CLK,
  75         PD15_AOUT_FEC_COL,
  76         PD16_AIN_FEC_TX_ER,
  77         PF23_AIN_FEC_TX_EN,
  78         /* I2C2 */
  79         PC5_PF_I2C2_SDA,
  80         PC6_PF_I2C2_SCL,
  81         /* SPI1 */
  82         PD25_PF_CSPI1_RDY,
  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         /* USB host */
  97         PA0_PF_USBH2_CLK,
  98         PA1_PF_USBH2_DIR,
  99         PA2_PF_USBH2_DATA7,
 100         PA3_PF_USBH2_NXT,
 101         PA4_PF_USBH2_STP,
 102         PD19_AF_USBH2_DATA4,
 103         PD20_AF_USBH2_DATA3,
 104         PD21_AF_USBH2_DATA6,
 105         PD22_AF_USBH2_DATA0,
 106         PD23_AF_USBH2_DATA2,
 107         PD24_AF_USBH2_DATA1,
 108         PD26_AF_USBH2_DATA5,
 109 };
 110
 111 /*
 112  * Phytec's PCM038 comes with 2MiB battery buffered SRAM,
 113  * 16 bit width
 114  */
 115
 116 static struct platdata_mtd_ram pcm038_sram_data = {
 117         .bankwidth = 2,
 118 };
 119
 120 static struct resource pcm038_sram_resource = {
 121         .start = MX27_CS1_BASE_ADDR,
 122         .end   = MX27_CS1_BASE_ADDR + 512 * 1024 - 1,
 123         .flags = IORESOURCE_MEM,
 124 };
 125
 126 static struct platform_device pcm038_sram_mtd_device = {
 127         .name = "mtd-ram",
 128         .id = 0,
 129         .dev = {
 130                 .platform_data = &pcm038_sram_data,
 131         },
 132         .num_resources = 1,
 133         .resource = &pcm038_sram_resource,
 134 };
 135
 136 /*
 137  * Phytec's phyCORE-i.MX27 comes with 32MiB flash,
 138  * 16 bit width
 139  */
 140 static struct physmap_flash_data pcm038_flash_data = {
 141         .width = 2,
 142 };
 143
 144 static struct resource pcm038_flash_resource = {
 145         .start = 0xc0000000,
 146         .end   = 0xc1ffffff,
 147         .flags = IORESOURCE_MEM,
 148 };
 149
 150 static struct platform_device pcm038_nor_mtd_device = {
 151         .name = "physmap-flash",
 152         .id = 0,
 153         .dev = {
 154                 .platform_data = &pcm038_flash_data,
 155         },
 156         .num_resources = 1,
 157         .resource = &pcm038_flash_resource,
 158 };
 159
 160 static const struct imxuart_platform_data uart_pdata __initconst = {
 161         .flags = IMXUART_HAVE_RTSCTS,
 162 };
 163
 164 static const struct mxc_nand_platform_data
 165 pcm038_nand_board_info __initconst = {
 166         .width = 1,
 167         .hw_ecc = 1,
 168 };
 169
 170 static struct platform_device *platform_devices[] __initdata = {
 171         &pcm038_nor_mtd_device,
 172         &pcm038_sram_mtd_device,
 173 };
 174
 175 /* On pcm038 there's a sram attached to CS1, we enable the chipselect here and
 176  * setup other stuffs to access the sram. */
 177 static void __init pcm038_init_sram(void)
 178 {
 179         __raw_writel(0x0000d843, MX27_IO_ADDRESS(MX27_WEIM_CSCRxU(1)));
 180         __raw_writel(0x22252521, MX27_IO_ADDRESS(MX27_WEIM_CSCRxL(1)));
 181         __raw_writel(0x22220a00, MX27_IO_ADDRESS(MX27_WEIM_CSCRxA(1)));
 182 }
 183
 184 static const struct imxi2c_platform_data pcm038_i2c1_data __initconst = {
 185         .bitrate = 100000,
 186 };
 187
 188 static struct at24_platform_data board_eeprom = {
 189         .byte_len = 4096,
 190         .page_size = 32,
 191         .flags = AT24_FLAG_ADDR16,
 192 };
 193
 194 static struct i2c_board_info pcm038_i2c_devices[] = {
 195         {
 196                 I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
 197                 .platform_data = &board_eeprom,
 198         }, {
 199                 I2C_BOARD_INFO("pcf8563", 0x51),
 200         }, {
 201                 I2C_BOARD_INFO("lm75", 0x4a),
 202         }
 203 };
 204
 205 static int pcm038_spi_cs[] = {GPIO_PORTD + 28};
 206
 207 static const struct spi_imx_master pcm038_spi0_data __initconst = {
 208         .chipselect = pcm038_spi_cs,
 209         .num_chipselect = ARRAY_SIZE(pcm038_spi_cs),
 210 };
 211
 212 static struct regulator_consumer_supply sdhc1_consumers[] = {
 213         {
 214                 .dev_name = "imx21-mmc.1",
 215                 .supply = "sdhc_vcc",
 216         },
 217 };
 218
 219 static struct regulator_init_data sdhc1_data = {
 220         .constraints = {
 221                 .min_uV = 3000000,
 222                 .max_uV = 3400000,
 223                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 224                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 225                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 226                         REGULATOR_MODE_FAST,
 227                 .always_on = 0,
 228                 .boot_on = 0,
 229         },
 230         .num_consumer_supplies = ARRAY_SIZE(sdhc1_consumers),
 231         .consumer_supplies = sdhc1_consumers,
 232 };
 233
 234 static struct regulator_consumer_supply cam_consumers[] = {
 235         {
 236                 .dev_name = NULL,
 237                 .supply = "imx_cam_vcc",
 238         },
 239 };
 240
 241 static struct regulator_init_data cam_data = {
 242         .constraints = {
 243                 .min_uV = 3000000,
 244                 .max_uV = 3400000,
 245                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 246                         REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
 247                 .valid_modes_mask = REGULATOR_MODE_NORMAL |
 248                         REGULATOR_MODE_FAST,
 249                 .always_on = 0,
 250                 .boot_on = 0,
 251         },
 252         .num_consumer_supplies = ARRAY_SIZE(cam_consumers),
 253         .consumer_supplies = cam_consumers,
 254 };
 255
 256 static struct mc13xxx_regulator_init_data pcm038_regulators[] = {
 257         {
 258                 .id = MC13783_REG_VCAM,
 259                 .init_data = &cam_data,
 260         }, {
 261                 .id = MC13783_REG_VMMC1,
 262                 .init_data = &sdhc1_data,
 263         },
 264 };
 265
 266 static struct mc13xxx_platform_data pcm038_pmic = {
 267         .regulators = {
 268                 .regulators = pcm038_regulators,
 269                 .num_regulators = ARRAY_SIZE(pcm038_regulators),
 270         },
 271         .flags = MC13XXX_USE_ADC | MC13XXX_USE_TOUCHSCREEN,
 272 };
 273
 274 static struct spi_board_info pcm038_spi_board_info[] __initdata = {
 275         {
 276                 .modalias = "mc13783",
 277                 /* irq number is run-time assigned */
 278                 .max_speed_hz = 300000,
 279                 .bus_num = 0,
 280                 .chip_select = 0,
 281                 .platform_data = &pcm038_pmic,
 282                 .mode = SPI_CS_HIGH,
 283         }
 284 };
 285
 286 static int pcm038_usbh2_init(struct platform_device *pdev)
 287 {
 288         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
 289                         MXC_EHCI_INTERFACE_DIFF_UNI);
 290 }
 291
 292 static const struct mxc_usbh_platform_data usbh2_pdata __initconst = {
 293         .init   = pcm038_usbh2_init,
 294         .portsc = MXC_EHCI_MODE_ULPI,
 295 };
 296
 297 static void __init pcm038_init(void)
 298 {
 299         imx27_soc_init();
 300
 301         mxc_gpio_setup_multiple_pins(pcm038_pins, ARRAY_SIZE(pcm038_pins),
 302                         "PCM038");
 303
 304         pcm038_init_sram();
 305
 306         imx27_add_imx_uart0(&uart_pdata);
 307         imx27_add_imx_uart1(&uart_pdata);
 308         imx27_add_imx_uart2(&uart_pdata);
 309
 310         mxc_gpio_mode(PE16_AF_OWIRE);
 311         imx27_add_mxc_nand(&pcm038_nand_board_info);
 312
 313         /* only the i2c master 1 is used on this CPU card */
 314         i2c_register_board_info(1, pcm038_i2c_devices,
 315                                 ARRAY_SIZE(pcm038_i2c_devices));
 316
 317         imx27_add_imx_i2c(1, &pcm038_i2c1_data);
 318
 319         /* PE18 for user-LED D40 */
 320         mxc_gpio_mode(GPIO_PORTE | 18 | GPIO_GPIO | GPIO_OUT);
 321
 322         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 323
 324         /* MC13783 IRQ */
 325         mxc_gpio_mode(GPIO_PORTB | 23 | GPIO_GPIO | GPIO_IN);
 326
 327         imx27_add_spi_imx0(&pcm038_spi0_data);
 328         pcm038_spi_board_info[0].irq = gpio_to_irq(IMX_GPIO_NR(2, 23));
 329         spi_register_board_info(pcm038_spi_board_info,
 330                                 ARRAY_SIZE(pcm038_spi_board_info));
 331
 332         imx27_add_mxc_ehci_hs(2, &usbh2_pdata);
 333
 334         imx27_add_fec(NULL);
 335         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 336         imx27_add_imx2_wdt();
 337         imx27_add_mxc_w1();
 338
 339 #ifdef CONFIG_MACH_PCM970_BASEBOARD
 340         pcm970_baseboard_init();
 341 #endif
 342 }
 343
 344 static void __init pcm038_timer_init(void)
 345 {
 346         mx27_clocks_init(26000000);
 347 }
 348
 349 static struct sys_timer pcm038_timer = {
 350         .init = pcm038_timer_init,
 351 };
 352
 353 MACHINE_START(PCM038, "phyCORE-i.MX27")
 354         .atag_offset = 0x100,
 355         .map_io = mx27_map_io,
 356         .init_early = imx27_init_early,
 357         .init_irq = mx27_init_irq,
 358         .handle_irq = imx27_handle_irq,
 359         .timer = &pcm038_timer,
 360         .init_machine = pcm038_init,
 361         .restart        = mxc_restart,
 362 MACHINE_END