arch/arm/mach-mx5/board-mx51_efikamx.c

   1 /*
   2  * Copyright (C) 2010 Linaro Limited
   3  *
   4  * based on code from the following
   5  * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
   6  * Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
   7  * Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
   8  *
   9  * The code contained herein is licensed under the GNU General Public
  10  * License. You may obtain a copy of the GNU General Public License
  11  * Version 2 or later at the following locations:
  12  *
  13  * http://www.opensource.org/licenses/gpl-license.html
  14  * http://www.gnu.org/copyleft/gpl.html
  15  */
  16
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/i2c.h>
  20 #include <linux/gpio.h>
  21 #include <linux/leds.h>
  22 #include <linux/input.h>
  23 #include <linux/delay.h>
  24 #include <linux/io.h>
  25 #include <linux/fsl_devices.h>
  26 #include <linux/spi/flash.h>
  27 #include <linux/spi/spi.h>
  28
  29 #include <mach/common.h>
  30 #include <mach/hardware.h>
  31 #include <mach/iomux-mx51.h>
  32 #include <mach/i2c.h>
  33 #include <mach/mxc_ehci.h>
  34
  35 #include <asm/irq.h>
  36 #include <asm/setup.h>
  37 #include <asm/mach-types.h>
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/time.h>
  40
  41 #include "devices-imx51.h"
  42 #include "devices.h"
  43
  44 #define MX51_USB_PLL_DIV_24_MHZ 0x01
  45
  46 #define EFIKAMX_PCBID0          IMX_GPIO_NR(3, 16)
  47 #define EFIKAMX_PCBID1          IMX_GPIO_NR(3, 17)
  48 #define EFIKAMX_PCBID2          IMX_GPIO_NR(3, 11)
  49
  50 #define EFIKAMX_BLUE_LED        IMX_GPIO_NR(3, 13)
  51 #define EFIKAMX_GREEN_LED       IMX_GPIO_NR(3, 14)
  52 #define EFIKAMX_RED_LED         IMX_GPIO_NR(3, 15)
  53
  54 #define EFIKAMX_POWER_KEY       IMX_GPIO_NR(2, 31)
  55
  56 #define EFIKAMX_SPI_CS0         IMX_GPIO_NR(4, 24)
  57 #define EFIKAMX_SPI_CS1         IMX_GPIO_NR(4, 25)
  58
  59 /* board 1.1 doesn't have same reset gpio */
  60 #define EFIKAMX_RESET1_1        IMX_GPIO_NR(3, 2)
  61 #define EFIKAMX_RESET           IMX_GPIO_NR(1, 4)
  62
  63 /* the pci ids pin have pull up. they're driven low according to board id */
  64 #define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
  65 #define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
  66 #define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
  67 #define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0,   0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
  68
  69 static iomux_v3_cfg_t mx51efikamx_pads[] = {
  70         /* UART1 */
  71         MX51_PAD_UART1_RXD__UART1_RXD,
  72         MX51_PAD_UART1_TXD__UART1_TXD,
  73         MX51_PAD_UART1_RTS__UART1_RTS,
  74         MX51_PAD_UART1_CTS__UART1_CTS,
  75         /* board id */
  76         MX51_PAD_PCBID0,
  77         MX51_PAD_PCBID1,
  78         MX51_PAD_PCBID2,
  79
  80         /* SD 1 */
  81         MX51_PAD_SD1_CMD__SD1_CMD,
  82         MX51_PAD_SD1_CLK__SD1_CLK,
  83         MX51_PAD_SD1_DATA0__SD1_DATA0,
  84         MX51_PAD_SD1_DATA1__SD1_DATA1,
  85         MX51_PAD_SD1_DATA2__SD1_DATA2,
  86         MX51_PAD_SD1_DATA3__SD1_DATA3,
  87
  88         /* SD 2 */
  89         MX51_PAD_SD2_CMD__SD2_CMD,
  90         MX51_PAD_SD2_CLK__SD2_CLK,
  91         MX51_PAD_SD2_DATA0__SD2_DATA0,
  92         MX51_PAD_SD2_DATA1__SD2_DATA1,
  93         MX51_PAD_SD2_DATA2__SD2_DATA2,
  94         MX51_PAD_SD2_DATA3__SD2_DATA3,
  95
  96         /* SD/MMC WP/CD */
  97         MX51_PAD_GPIO1_0__SD1_CD,
  98         MX51_PAD_GPIO1_1__SD1_WP,
  99         MX51_PAD_GPIO1_7__SD2_WP,
 100         MX51_PAD_GPIO1_8__SD2_CD,
 101
 102         /* leds */
 103         MX51_PAD_CSI1_D9__GPIO3_13,
 104         MX51_PAD_CSI1_VSYNC__GPIO3_14,
 105         MX51_PAD_CSI1_HSYNC__GPIO3_15,
 106
 107         /* power key */
 108         MX51_PAD_PWRKEY,
 109
 110         /* spi */
 111         MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
 112         MX51_PAD_CSPI1_MISO__ECSPI1_MISO,
 113         MX51_PAD_CSPI1_SS0__GPIO4_24,
 114         MX51_PAD_CSPI1_SS1__GPIO4_25,
 115         MX51_PAD_CSPI1_RDY__ECSPI1_RDY,
 116         MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
 117
 118         /* reset */
 119         MX51_PAD_DI1_PIN13__GPIO3_2,
 120         MX51_PAD_GPIO1_4__GPIO1_4,
 121 };
 122
 123 /* Serial ports */
 124 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
 125 static const struct imxuart_platform_data uart_pdata = {
 126         .flags = IMXUART_HAVE_RTSCTS,
 127 };
 128
 129 static inline void mxc_init_imx_uart(void)
 130 {
 131         imx51_add_imx_uart(0, &uart_pdata);
 132         imx51_add_imx_uart(1, &uart_pdata);
 133         imx51_add_imx_uart(2, &uart_pdata);
 134 }
 135 #else /* !SERIAL_IMX */
 136 static inline void mxc_init_imx_uart(void)
 137 {
 138 }
 139 #endif /* SERIAL_IMX */
 140
 141 /* This function is board specific as the bit mask for the plldiv will also
 142  * be different for other Freescale SoCs, thus a common bitmask is not
 143  * possible and cannot get place in /plat-mxc/ehci.c.
 144  */
 145 static int initialize_otg_port(struct platform_device *pdev)
 146 {
 147         u32 v;
 148         void __iomem *usb_base;
 149         void __iomem *usbother_base;
 150         usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
 151         if (!usb_base)
 152                 return -ENOMEM;
 153         usbother_base = (void __iomem *)(usb_base + MX5_USBOTHER_REGS_OFFSET);
 154
 155         /* Set the PHY clock to 19.2MHz */
 156         v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
 157         v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
 158         v |= MX51_USB_PLL_DIV_24_MHZ;
 159         __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
 160         iounmap(usb_base);
 161         return 0;
 162 }
 163
 164 static struct mxc_usbh_platform_data dr_utmi_config = {
 165         .init   = initialize_otg_port,
 166         .portsc = MXC_EHCI_UTMI_16BIT,
 167         .flags  = MXC_EHCI_INTERNAL_PHY,
 168 };
 169
 170 /*   PCBID2  PCBID1 PCBID0  STATE
 171         1       1      1    ER1:rev1.1
 172         1       1      0    ER2:rev1.2
 173         1       0      1    ER3:rev1.3
 174         1       0      0    ER4:rev1.4
 175 */
 176 static void __init mx51_efikamx_board_id(void)
 177 {
 178         int id;
 179
 180         /* things are taking time to settle */
 181         msleep(150);
 182
 183         gpio_request(EFIKAMX_PCBID0, "pcbid0");
 184         gpio_direction_input(EFIKAMX_PCBID0);
 185         gpio_request(EFIKAMX_PCBID1, "pcbid1");
 186         gpio_direction_input(EFIKAMX_PCBID1);
 187         gpio_request(EFIKAMX_PCBID2, "pcbid2");
 188         gpio_direction_input(EFIKAMX_PCBID2);
 189
 190         id = gpio_get_value(EFIKAMX_PCBID0);
 191         id |= gpio_get_value(EFIKAMX_PCBID1) << 1;
 192         id |= gpio_get_value(EFIKAMX_PCBID2) << 2;
 193
 194         switch (id) {
 195         case 7:
 196                 system_rev = 0x11;
 197                 break;
 198         case 6:
 199                 system_rev = 0x12;
 200                 break;
 201         case 5:
 202                 system_rev = 0x13;
 203                 break;
 204         case 4:
 205                 system_rev = 0x14;
 206                 break;
 207         default:
 208                 system_rev = 0x10;
 209                 break;
 210         }
 211
 212         if ((system_rev == 0x10)
 213                 || (system_rev == 0x12)
 214                 || (system_rev == 0x14)) {
 215                 printk(KERN_WARNING
 216                         "EfikaMX: Unsupported board revision 1.%u!\n",
 217                         system_rev & 0xf);
 218         }
 219 }
 220
 221 static struct gpio_led mx51_efikamx_leds[] = {
 222         {
 223                 .name = "efikamx:green",
 224                 .default_trigger = "default-on",
 225                 .gpio = EFIKAMX_GREEN_LED,
 226         },
 227         {
 228                 .name = "efikamx:red",
 229                 .default_trigger = "ide-disk",
 230                 .gpio = EFIKAMX_RED_LED,
 231         },
 232         {
 233                 .name = "efikamx:blue",
 234                 .default_trigger = "mmc0",
 235                 .gpio = EFIKAMX_BLUE_LED,
 236         },
 237 };
 238
 239 static struct gpio_led_platform_data mx51_efikamx_leds_data = {
 240         .leds = mx51_efikamx_leds,
 241         .num_leds = ARRAY_SIZE(mx51_efikamx_leds),
 242 };
 243
 244 static struct platform_device mx51_efikamx_leds_device = {
 245         .name = "leds-gpio",
 246         .id = -1,
 247         .dev = {
 248                 .platform_data = &mx51_efikamx_leds_data,
 249         },
 250 };
 251
 252 static struct gpio_keys_button mx51_efikamx_powerkey[] = {
 253         {
 254                 .code = KEY_POWER,
 255                 .gpio = EFIKAMX_POWER_KEY,
 256                 .type = EV_PWR,
 257                 .desc = "Power Button (CM)",
 258                 .wakeup = 1,
 259                 .debounce_interval = 10, /* ms */
 260         },
 261 };
 262
 263 static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
 264         .buttons = mx51_efikamx_powerkey,
 265         .nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
 266 };
 267
 268 static struct mtd_partition mx51_efikamx_spi_nor_partitions[] = {
 269         {
 270          .name = "u-boot",
 271          .offset = 0,
 272          .size = SZ_256K,
 273         },
 274         {
 275           .name = "config",
 276           .offset = MTDPART_OFS_APPEND,
 277           .size = SZ_64K,
 278         },
 279 };
 280
 281 static struct flash_platform_data mx51_efikamx_spi_flash_data = {
 282         .name           = "spi_flash",
 283         .parts          = mx51_efikamx_spi_nor_partitions,
 284         .nr_parts       = ARRAY_SIZE(mx51_efikamx_spi_nor_partitions),
 285         .type           = "sst25vf032b",
 286 };
 287
 288 static struct spi_board_info mx51_efikamx_spi_board_info[] __initdata = {
 289         {
 290                 .modalias = "m25p80",
 291                 .max_speed_hz = 25000000,
 292                 .bus_num = 0,
 293                 .chip_select = 1,
 294                 .platform_data = &mx51_efikamx_spi_flash_data,
 295                 .irq = -1,
 296         },
 297 };
 298
 299 static int mx51_efikamx_spi_cs[] = {
 300         EFIKAMX_SPI_CS0,
 301         EFIKAMX_SPI_CS1,
 302 };
 303
 304 static const struct spi_imx_master mx51_efikamx_spi_pdata __initconst = {
 305         .chipselect     = mx51_efikamx_spi_cs,
 306         .num_chipselect = ARRAY_SIZE(mx51_efikamx_spi_cs),
 307 };
 308
 309 void mx51_efikamx_reset(void)
 310 {
 311         if (system_rev == 0x11)
 312                 gpio_direction_output(EFIKAMX_RESET1_1, 0);
 313         else
 314                 gpio_direction_output(EFIKAMX_RESET, 0);
 315 }
 316
 317 static void __init mxc_board_init(void)
 318 {
 319         mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
 320                                         ARRAY_SIZE(mx51efikamx_pads));
 321         mx51_efikamx_board_id();
 322         mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
 323         mxc_init_imx_uart();
 324         imx51_add_sdhci_esdhc_imx(0, NULL);
 325
 326         /* on < 1.2 boards both SD controllers are used */
 327         if (system_rev < 0x12) {
 328                 imx51_add_sdhci_esdhc_imx(1, NULL);
 329                 mx51_efikamx_leds[2].default_trigger = "mmc1";
 330         }
 331
 332         platform_device_register(&mx51_efikamx_leds_device);
 333         imx51_add_gpio_keys(&mx51_efikamx_powerkey_data);
 334
 335         spi_register_board_info(mx51_efikamx_spi_board_info,
 336                 ARRAY_SIZE(mx51_efikamx_spi_board_info));
 337         imx51_add_ecspi(0, &mx51_efikamx_spi_pdata);
 338
 339         if (system_rev == 0x11) {
 340                 gpio_request(EFIKAMX_RESET1_1, "reset");
 341                 gpio_direction_output(EFIKAMX_RESET1_1, 1);
 342         } else {
 343                 gpio_request(EFIKAMX_RESET, "reset");
 344                 gpio_direction_output(EFIKAMX_RESET, 1);
 345         }
 346 }
 347
 348 static void __init mx51_efikamx_timer_init(void)
 349 {
 350         mx51_clocks_init(32768, 24000000, 22579200, 24576000);
 351 }
 352
 353 static struct sys_timer mxc_timer = {
 354         .init   = mx51_efikamx_timer_init,
 355 };
 356
 357 MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
 358         /* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
 359         .boot_params = MX51_PHYS_OFFSET + 0x100,
 360         .map_io = mx51_map_io,
 361         .init_irq = mx51_init_irq,
 362         .init_machine =  mxc_board_init,
 363         .timer = &mxc_timer,
 364 MACHINE_END